Abb Complete Catalogue

www.sigmainstruments.co.in [email protected]

Tank Level & Flow Instrumentation Products

Some of our Patrons . . . Sigma Instruments Company is in the business of design & development, manufacturing and supply of Tank Level & Flow Instrumentation products. Established in 1973, Sigma draws its inspiration from Σ the eighteenth letter in the Greek alphabets, used to denote the algebraic sum total. The purpose is to serve the industry by recognizing and providing a sum total of fluid monitoring devices and allied instrumentation products to its customers. The products can be broadly classified into - Level Gauges

-

Level Switches

- Level Indicator

-

Sight Glasses

- Flow Switches - Allied Instrumentation Products. Sigma's Operation and processes are managed on principles of ISO 9001:2008 Quality Management System. The products also come with IBR Approval and CE Mark. Recognition & approval of our products by leading domestic and international companies / consultants and repeat orders from our customers, fuel our passion to go that extra mile in delivering the reliable gaging & control, needed for Tank Level & Flow Instrumentation Products. Sigma’s products find application in wide spectrum of industries like: - Chemical, Petrochemical, Pharmacy & Refineries - Power Plants - Process - Oil & Gas Exploration, Storage & Transport - Machinery - Water and Waste Water Treatment - Environmental Technology - Food and Beverage Industry - Fire Fighting Systems

Sigma Instruments Company is Committed to: - Provide reliable products to the customer based on engineering principles with desired quality and service, creating confidence for repeat requirements. - Practice and maintain highest corporate ethics of Honesty & Integrity with Suppliers, Customers, Associates and Co-workers. - Foster a culture where training is an integral part to continually improve the processes.

I N D E X Level Gauge Armored Level Gauge (Reflex / Transparent)

03-07

Magnetic Level Gauge

08-09

Tubular Level Gauge

10-11

Oil Level Gauge

12

Tank Level Indicator Float Level Indicator

13-15

Automatic Tank Level Gauge

16-19

Level Switch Side Mounted Level Switch

20-21

External Cage Level Switch

22-23

Top Mounted Level Switch

24-25

Level Switch (REED) Type

26-27

Conductivity Level Switch

28-29

Pneumatic Level Switch

30

Transmitter

31

Sight Flow Indicator

32-33

Flow Switch

34-35

Allied Products Condensate Pot

36-37

Manifolds

38

Instrumentation Fittings

39

Needle Valve

40

Custom Products

41

Level Switch-Cable Float

42

Disclaimer: All the products mentioned in this catalogue are our standard design. If the standard products do not meet your requirements, we can modify them to meet your specifications and would appreciate the opportunity of making suggestions to cover your application, based on engineering principles. SIGMA reserves the right to modify specification / design from time to time, which is deemed suitable for the product without prior intimation.

SIGMA INSTRUMENTS COMPANY Sonapur Lane, Bhandup (W), Mumbai

Office: 201, Anandraj Industrial Estate 400078. INDIA. | Tel.: +91 22 2566 0555

Fax: +91 22-2566 3285 | www.sigmainstruments.co.in | [email protected] Tank Level & Flow Instrumentation Products

FLAT GLASS GAUGE (ARMORED) SIGMA’s Flat Glass Level Gauges are reliable means for accurate measurement and direct observation of process fluids. These are designed to match industry requirements of ruggedness and material mix to widen the scope of application in process tank, pressure vessels and other containers with fluids varying from ordinary water to highly corrosive chemicals. THE SYSTEM: The Flat Gauges are inevitable means for process fluid measurement when it comes to severity of conditions. The medium to be measured is made available for direct measurement outside the vessel without any special preparations and provides on line monitoring. The principle of liquid maintaining the same level makes this system very precise and reliable. The fluid attains its level in the chamber of the level gauge as that of the vessel and is viewed through a glass window. SIGMA Gauge Valves form a major component of the flat glass gauges. Two gauge valves at the ends of the gauge chamber are connected to the tank. Under normal operations, the valves are kept wide open causing the pressure to equalize in the system thus permitting the liquid to seek its true level for observation along the visible length. SIGMA offers Reflex and Transparent type Flat Level Gauges as required by the industry. Sigma Advant-edge Maintenance free rugged design. Material mix to suit specific application. Special design for high temperature and pressures. Customized process connections, center to center distance and visible length. Safety ball check device in gauge valves prevents leakage in the event of glass breakage. Choice of Off set Gauge Valve in the top and bottom connection, facilitate cleaning of solid chamber. Leakage indicating gauge construction for Nuclear Power Plant applications.

able

il Ava TUV India Private Ltd.

IBR Approved Flat Glass Gauge

Works: 27, Nahur Udyog Indl Permises, M. M. Malaviya Road, Mulund(W), Mumbai - 400080. INDIA . | Tel. : +91 22 2591 8567 | Fax : +91 22 2591 8566




Sigma Reflex Level Gauge

Making the choice

The Reflex Level Gauge consists of a chamber designed to have one

SIGMA Reflex Level Gauge is recommended for clean, colorless and

or more front windows i.e on one side of the chamber. Each window

non viscous services. Sticky fluids tend to coat the glass and result in

consists of a special glass called reflex glass that is cushioned

wrong readings, Erroneous indications will also occur if fluid is near

between cover plates and chamber . The reflex glasses are provided

saturation conditions or when the boiling or condensation in gauge

with prismatic grooves on the side in contact with the medium. As a

glass affects the refraction of light through the prisms.

result of the difference in refractive index, light rays entering the gauge from outside are reflected or absorbed. The light rays entering the steam or gas space strikes the grooves face at an angle of 450C,

SIGMA Transparent Level Gauge is recommended for colored or viscous fluids, interface detection and direct observation of the

thereby being refracted into the opposite groove face from which it is

physical state. A source of light can be provided by a illuminator which

reflected back to the direction of observation. The steam or gas space

is located at the back of the gauges, enabling readings of the liquid /

appears silver while and the liquid space appears black. This

steam interface. Quick closing of the gauge valve feature allows the

eliminates any possibility of error in reading the liquid level The Reflex

needle to plug the seat very quickly and seal off the process.

Level Gauge does not require an illuminator.

Sigma Transparent Level Gauge The Transparent Level Gauge consists of one or more windows on each side of the liquid chamber. The transparent glasses are crystal clear and have very smooth surfaces. The glasses are cushioned with gaskets, between cover plates and the chamber. Sigma large chamber reflex and transparent level gauges are designed to give a more accurate reading for liquids that have a tendency to surge or boil, that cannot not be obtained with the standard gauges.

Gauge Construction

REFLEX TYPE

TRANSPARENT TYPE NUT SPRING WASHER COVER PLATE CUSHION GASKET GLASS SEAL GASKET MAIN CHAMBER U BOLT

STUD





WELD PAD FLAT GLASS LEVEL GAUGE WELD PAD Flat Glass Liquid Level Gages are designed to become an integral part of the vessel, Weld pad liquid Level Gages are directly mounted to the tank or vessel to be measured. SIGMA Welding Pad Gages are used where conventional gage and valve construction is impractical because of solid matter in suspension, under conditions where the thermal error caused by piping to a gage glass cannot be tolerated or where space requirements suggest their use. Included are applications involving high vibration, highly viscous liquids or liquids with considerable amounts of solids. SIGMA offers end users a flat or radius weld pad gage in varying lengths and configurations. It is possible to monitor color, clarity and level of a gas / liquid interface. Because there are no nipples through which the process liquid enters the gage, clogging potential is eliminated. SIGMA Welding Pad Gages are made in both Reflex and Transparent Types. Reflex gages are used where liquid reading only is required. Transparent gages are usualy used where installation is made on each side of the vessel to give see-through visibility.

The System SIGMA weld pad gages comprise of six basic components. Each component may vary slightly, depending on the desired physical and mechanical properties for the gage. refer picture: 1. Chamber - provides a pressure retaining metallic surface for weld attachment to the tank or vessel. Vessel chamber surface can be radiused to match tank or vessel curvature. Slot(s) are machined into the chamber to provide direct visualization of the process fluid. 2. Gasket - seal the gap and prevent leakage between the chamber and the glass. Gaskets are available in a variety of materials for compatibility with the media in the gage. 3. Cushion - acts as a protective buffer between the glass and the cover. For proper sealing, cushions must be as hard or harder than the gasket material. 4. Cover - protects the glass assembly from external hits and provides a flat, rigid surface that is used to evenly compress the gage assembly. 5. Bolting - compresses the components between the covers & weld pad chamber. Mica Shield - (Optional on transparent gages) used to prevent the process media from contacting the glass. Load Consideration: Whenever it is necessary to slot the tank because of the nature of the liquid or there is need to observe the color or interface of the liquid, the following facts must be considered: Standard and welding pad gages will withstand a loading due to the pressure within the gage itself, but they are not designed to replace the tank strength lost with tank wall is cut. SIGMA has no control over the loading in which the pressure vessel will impose on the pad. It is therefore impossible to rate welding pad gages. The tank fabricator must provide suitable tank wall reinforcement to prevent the pad from being distorted during welding or while under hot operating condition.





Gauge Construction Type

: Reflex / Transparent.

Off Set Valves: Having an advantage of permitting the inside of

Liquid Chamber

: Carbon Steel, Rubber / Teflon lined SS 304,

the gauge glass to be cleaned easily with minimum disassembly,

Cover Plate

SS 316, SS 304L, PVC / PP / Monel /

by removing vent and drain plugs (or other connection), a straight

Alloy 20 / specified.

passage through the chamber is obtained.

: CS, SS 304, SS 316, Aluminum, PVC / PP / Specified.

Bolt & Nuts

: ASTM 193 Gr.B7 / A194 Gr.2H / specified,

A soft brush or water jet is an ideal way to clean. This is possible because the spindle is away from the center and does not block the path of cleaning.

evenly spaced to give uniform pressure

Glass

: Toughened borosilicate, Alumina silicate for specific liquids, Oil tempered and Soda Lima Glasses (optional)

Make

: Toughened Borosilicate / Indigenous

Gasket

: Non Asbestos / Teflon / Klingerite / Grafoil / specified.

Gauge Valves

: Auto Shut off / Straight / Off set with ball check arrangement.

Bonnet

: Screwed / Bolted

Connections

: Flanged and Screwed (as required). Top

Bolted Bonnet Gauge Valve

Screwed Bonnet Gauge Valve

and Bottom. Side Connections are available. Chamber to Valve can be union or welded. Flanged Ends can be made rotatable or even spherical union connections can be provided.

Temperature

: Borosilicate up to 3000 C and 500C

Auto Shut Off: This safety device blocks off fluids from being floored outside of the tank in the event of glass breakage. Both the upper and lower valves come equipped with this feature called ball check. Upon glass breakage, a ball that is floating in normal condition, get drawn by the surge of the fluid to spill out of the broken section.

PVC / PP Level Gauges.

This ball then plugs the valve seat and seals off the fluid flow.

Pressure

: 20 tp 250 bar / specified.

Closing of the valve stem plugs the seat and also dislodges the ball

Shield

: Mica / PCTFE

from the other end of the seat.

1. Drain cocks are supplied fo all gauge glasses with material same as that of valve body having 1/4" NPT connection as standard. Plugs for Vent is standard and drain cocks are provided wherever called for. 2. Illuminators are of weather proof & explosion proof type giving an even diffusion of light over the entire lengths of gauge glass without glare or blind spots. Scales are available where positive measurement of liquid is required. Scales are offered in Aluminum / SS / weather resistant plastic, graduated in mm / inches. 3. Internal cooling tube, Expansion coil, Balancing pipe or

Gauge Connection: Welded construction is opted when viewing is predetermined and when rotation of the main chamber is not required. Valve connection to the main chamber can be provided with union threaded connection to facilitate disassembly for cleaning or for turning the chamber to the desired angle of visibility. This is however possible for top and bottom valve mounting option only. While ordering please specify: Type of valve, center to center distances, opening conditions, body material, connection size & type. Special type of gauge glasses as per customer's requirement can be supplied.

Frost shields (for very low temperature) or any other special requirements are available as optionals.





Model Number Coding for Armored Level Gauge

Type ARLG - Reflex ATLG - Transparent

CC in mm Example 1200 mm Special Features E - Expansion Loop N - None F - Frost Shield R - Rubber Lined M - Mica Shield C - Internal Cooling I - FP Illuminator Tube T - Teflon Lined

Design S - Standard L - Large Chamber U - Uninterrupted visibility W - Weld Pad Orientation S - Side-Side B - Top and Bottom

Valve / Flange Material 4 - SS 304 4L - SS 304L V - PVC 5 - A 105 6L - SS 316L T - Teflon 6 - SS 316 P - PP S - Specified

Valve Body O - Offset T - Straight N - No Valve Connection F - Flanged T - Threaded S - Socket Weld B Butt Weld

Bonnet S - Screwed B - Bolted N - No Bonnet

Model Decoding example: ARLG-S-S-O-S-F-1-4-F-1200 mm Armored Reflex Level Gauge, with - Standard design

- Operating pressure up to 15 kg/cm2

- Side-Side Orientation - Valve / Flange Material - SS 304 - Off Set Valve Body

- with Frost Shield

- Screwed Bonnet

- CC : 1200 mm

- Flanged Connection

Operating pressure 1 - up to 15 kg/cm2 2 - up to 40 kg/cm2 3 - up to 80 kg/cm2 S - Specified

Note All the Flat Glass Gauge mentioned in this catalogue are our standard design. If the standard items do not meet your requirements, we can modify them to meet your specifications and would appreciate the opportunity of making suggestions to cover your application, based on engineering principles. SIGMA reserves the right to modify specification / design from time to time, which is deemed suitable for the product without prior intimation.

Note -

Auto shut off valve are un lined / uncoated by virtue of design. In case valves are not opted in lined chambers, isolation valves may be provided for maintenance.

-

Lined / Coated versions are available in large chamber model only by virtue of design.

-

Lined / Coated level gauges shall have Flanged process connection only.

-

Model Coding is categorized as per the specification of the product, for ease of selection and ordering.

-

In case of choosing multiple specification under a specific category, mention the 2nd / 3rd code with a bracket, after the 1st code. For ordering IBR approved product, mention "IBR" immediately after the Product code.

-

The product conforms to 97/23/EC: Pressure Equipment Directive, Article 3.3 Sound Engineering Practice.

-

In case of doubt, contact SIGMA for assistance in arriving at the model code / for specification.





MAGNETIC LEVEL GAUGE SIGMA's Magnetic Level Gauge's operation is based on elementary principles of physics: -

Liquid attains the same level in communicating vessels.

-

Unlike magnetic poles attract and like poles repel.

-

Last but not the least, Archimedes principle.

Sigma Magnetic level gauge consists of : • A vertical chamber consisting of a non magnetic tube of suitable diameter and thickness • A float, where-in magnets are placed radially exactly on the liquid level line (floating point) • Two horizontal stub pipes with specified end connection • An indicator outside the vertical chamber comprising of a set of flags that contain a set of permanent magnet encapsulated, which can rotate on their horizontal axis or a magnetic follower that moves along in a transparent tube. • Optional shut off valves at the two stub pipes to isolate the level gauge • A non magnetic scale with graduations in mm/cm/inches As the float moves up and down with changing level, the following action takes place: -

In case of the flag type, the flag indicator consists of bicolored flags that are contrasting dark and bright colors. The bright represents the liquid level and the dark color depicts the empty or interface fluid level. The float immerses only on the upper fluid and floats on the lower for which the specific gravity suitability is maintained.

-

In case of the follower type, the indicator consists of a encapsulated magnetic follower that follows the rise and fall of the magnetic float. Specifications

Extruded Outlet

Specific Gravity

: 0.6 upwards / specified.

Temperature

: 2000C, Pressure: 10-80 kg/cm2

(Optional)

High Pressure / High Temperature option available

Process Connection : Threaded / Flanged Chamber Material

: SS304 / SS316 / PVC / PP / PVDF / HDPE / Coated / Lined / Specified

Float

: SS304 / SS316 / Titanium / Specified

Optional

: Shut Off Valve, Insulation Jacket, Transmitters, Level Switch

Consult SIGMA to check suitability of Gauge for process condition.

No sink-in distortion for interference float travel.


SIGMA INSTRUMENTS COMPANY

Office: 201, Anandraj Industrial Estate

Sonapur Lane, Bhandup (W), Mumbai

400078. INDIA. | Tel.: +91 22 2566 0555


Application Areas of Magnetic Level Gauge - Acid Tanks

- Fertilizers and Pesticides

- Ammonia Tanks

- Fuels and Solvents

- Boiler Feed Water Tanks

- Oil Production and refining

- Detergents and Soaps

- Scrubber & Storage Tank

Model Number Coding for Magnetic Level Gauge MLG

Orientation

Connection

Magnetic Level Gauge

S - Side Side T - Top Mounting

F- Flanged T- Threaded S-Socket Weld B-Butt Weld

Material of Construction

Additional Features

CC (in mm)

4-SS304 4L-SS304L 6-SS316 6L-SS316L P-PP V-PVC

N-None IInsulation Pad

Example 1200 mm

S-Specified Material

S - Level Switch T - Transmitter J - Jacketed Type

T - Teflon Coating V -Valves

Model Decoding example: MLG-S-F-4-S(T)-1200 mm Magnetic Level Gauge, with - Side - Side Orientation

- With Level Switch and Transmitter

- Flanged Connection (specify the Flange rating and size while ordering)

- CC: 1200 mm

- Material of construction - SS304

Note - Model Coding is categorized as per the specification of product, for ease of selection & ordering. - In case of choosing multiple specification under a specific category, mention the 2nd / 3rd code with a bracket, after the 1st code. - For ordering IBR approved product, mention "IBR" immediately after the Product code. - The product conforms to 97/23/EC: Pressure Equipment Directive, Article 3.3 Sound Engineering practice and 2006/95/EC: Low Voltage Directive (LVD) - In case of doubt, contact SIGMA for assistance in arriving at the model code / for specification.

Note All the Magnetic Level Gauge mentioned in this catalogue are our standard design. If the standard items do not meet your

able

il

Ava TUV India Private Ltd.

IBR Approved Magnetic Level Gauge

requirements, we can modify them to meet your specifications and would appreciate the opportunity of making suggestions to cover your application, based on engineering principles. SIGMA reserves the right to modify specification / design from time to time, which is deemed suitable for the product without prior intimation.





TUBULAR LEVEL GAUGE SIGMA's direct reading liquid level gauge glasses are the recognized reliable means of accurately determining the liquid level in process tanks, pressure vessels, boilers & various other types of containers with liquid varying from ordinary water to highly corrosive and dangerous chemicals. Sigma Advant-edge Maintenance free rugged design. Material mix to suit specific application. Special design for high temperature and pressures. Customized process connections, center to center distance and visible length Safety ball check device in gauge valves prevents leakage in the event of glass breakage Choice of Off set Gauge Valve in the top and bottom connection, facilitate cleaning of the Glass tube

Specifications Center to Center (C/C) : as per below table / specific design Body Type

: Straight or Off set

Body Material

: SS304 /SS 316 /CS /PP /PVC /specified

Connection

: Screwed / Flanged

Glass Tube

: Borosilicate (Ø 16 / 19 / 25 mm)

Protector

: Guard Rod (4 Nos) / 'C' Cover (2 Nos)

Hand Wheel

: Bakelite / CI

Drain / Vent

: Plugs or Cocks in BSP / NPT

Accessories

: Scales are available for positive

measurement of liquid is required. Scales are offered in weather resistant Plastic / Aluminum / SS and graduated in mm / inch.

Maximum Working Pressure for Gauge Glasses Recommended Length in mm

Pressure in kg/cm2

250 500 750 1000 1250 1500 1750 2000

30 25 20 16 11 5 5 4

Operating Principle The principle of liquid maintaining the same level makes this system very precise and reliable. The fluid attains its level in the glass tube of the level gauge as that of the vessel and is viewed through the glass tube. SIGMA Gauge Valves form a major component of the tubular glass gauges. Two gauge valves at the ends of the glass tube are connected to the tank. Under normal operations, the valves are kept wide open causing the pressure to equalize in the system thus permitting the liquid to seek its true level for observation along the visible length.





Model Number Coding for Tubular Level Gauge Valve Body

TLG Tubular Level Gauge

Bonnet

Connection

O - Offset S - Screwed F-Flanged T - Straight B - Bolted T- Threaded N - None N - No Valve S-Socket Weld B-Butt Weld

Flanges / Valve Material

Glass OD

Glass Protection

Connection Size & Rating

C/C in mm

4-SS304 5-A105 6-SS316 4L-SS304L 6L-SS316L P-PP V-PVC T-Teflon

1- 12 mm 2- 16 mm 3- 19 mm 4- 25 mm

G - Guard Rods C - Cover Protector

SR-Specify size & Rating for example 25 NB 150 # or 40 NB SW or 20 NB NPT

Example 1250 mm


Model Decoding example: TLG - O - B - F - 4 - 2 - G-25 NB 150 #-1200 mm Tubular Level Gauge, with - Offset Valve Body - Bolted Bonnet - Flanged Connection - S3 304 Flange / Valve - 16 mm Glass OD - Guard Rods for Glass Protection - Flange Size 25 NB Size, 150 # - CC: 1250 mm

Note - Model Coding is categorized as per the specification of the product, for ease of selection and ordering. - In case of choosing multiple specification under a specific category, mention the 2nd / 3rd code with a bracket, after the 1st code. - For ordering IBR approved product, mention "IBR" immediately after the Product code. - Bolted Bonnet option is only available in Offset Valves (CS/SS). - The product conforms to 97/23/EC: Pressure Equipment Directive, Article 3.3 Sound Engineering Practice. - In case of doubt, contact SIGMA for assistance in arriving at the model code / for specification.

Note All the Tubular Level Gauge mentioned in this catalogue are our standard design. If the standard items do not meet your

able vail

A TUV India Private Ltd.

IBR Approved Tubular Level Gauge

requirements, we can modify them to meet your specifications and would appreciate the opportunity of making suggestions to cover your application, based on engineering principles. SIGMA reserves the right to modify specification / design from time to time, which is deemed suitable for the product without prior intimation.





OIL LEVEL GAUGE SIGMA’s Oil Level Gauge / Indicators (Acrylic) are designed

SIGMA’s Oil Level Gauge / Indicators (Glass) is rugged,

for measuring / indication of level of oil or other transmission

compact and reliable gauge for visual indication of oil

liquids. The principle of operation is liquid maintaining its

levels in small tanks.

level by virtue of gravity. The Oil Level Gauge comprises

The Level Gauge consists of a toughened borosilicate

of a solid block of transparent acrylic (oil chamber) with

gauge glass tube fitted between metallic end blocks and

graduations as required. The Oil Level Gauge is connected

banjo bolts through a set of o-rings. A slotted steel guard

to the storage tank through a single limb or by having two

is provided enclosing the glass guage to provide protection

connections drawn from the chamber to the side of the tank.

from accidental damage. The gauge is mounted parallel

It also contains a vent and a drain. This is typically used for

to the tank, to form a closed loop causing tank liquid to

low pressure and low temperature applications.

seek its level in the gauge.

Sigma Advant-edge

Specifications

No Glass Tube Construction for breakage

Wetted parts

: CS / SS 304 / SS 316.

No Leaking glands and gland tightening for glass packing.

Process Connection

: M12 or M8 (Banjo Bolts).

Lock Nut

: CS / SS.

Guard

: CS, Slotted Tube.

Gauge

: Toughened borosilicate Ø 16 mm.

Banjo Bolt O Ring

: Neoprene / Viton.

Comparatively unbreakable on slight impact. Clear and easily cleanable.

Typical Application of Oil Level Indicator • Machinery

• Bearing Housings

Range (C/C) / Visibility : 75 to 300 mm / c/c - 40 mm.

• Gear Boxes

• Hydraulic Tanks

Temperature / Pressure : 700C (Neoprene),1000C (Viton) / 1 bar.

• Engine Tanks (Temperature below 600C)

Oil Level Gauge (Glass)

Model Number Coding for Oil Level Gauge SIOLG

Indication

Sigma Oil Level Gauge

A-Acrylic G- Glass

No.of Limb

Wetted Parts

Process Connection

S - Single

4-SS304 6-SS316 C-CS

1 - M12 2 - M8 S - Others specify

D - Double

Specify C/C (mm) distance after the model code.

Oil Level Gauge (Acrylic )

25

c/c

Note: - SIGMA reserves the right to modify specification / design from time to time, which is deemed suitable for the product without prior intimation.

25

TUV India Private Ltd.





FLOAT LEVEL INDICATOR SIGMA tank level indicators are float operated target type suitable for liquid level gauging of fixed roof, floating roof, open type vertical storage tanks and underground sumps for water, oil, solvents etc. The tank level indicators are of simple construction and are easy to install. They are very sturdy and require no maintenance. A float operated tank indicator comprises of a float that is located within guide cables. The guide cables whose ends are fastened on to an anchor bar are kept straight and wrinkle free by tension devices. The anchor bar is either grouted or welded to the tank bases. The float cable is wound over a set of pulleys, which are secured in the pulley housing. One end of the float cable bears the float and the other end carries a pointer assembly with a counter weight for balance. Tank level indicator float operated type is for fixed roof, floating roof, open top and under ground storage tanks. Sigma Advant-edge Simple and rugged in construction. Good readability from a long distance. Easy installation. Can accommodate a range of specific gravities. For larger ranges and minimum mounting space, the Half scale type is a classic solution. Liquid seals for volatile and fuming processes.

Specifications Type & Range

: Full Scale / Half Scale, up to 20 m / specified

Graduation

: At every 100 mm in Nylon / PP.

Specific Gravity

: 0.7 and above.

Operating Temperature

: up to 3000C / specified

Float

: SS 304/SS 316/ MS Rubber Lined

0

90 Elbow with pulley

0

180 Elbow with pulley

/SS316 Teflon lined/PP/PVC/ specified Sealant Filling

Guide Wire

: SS 304 / SS 316 / Nylon / PP / mm WC

Specified.

200 300 600

Tension Spring Assembly : Carbon Steel / SS 304 / SS 316. Anchor Bar

: CS / SS 304 / SS 316 / Specified.

Pulley

: SS 304 / SS 316 / Brass / Aluminum / Specified

Volume of Sealant Required 1000 ml 1200 ml 1900 ml

Drain

Liquid seals are used for application where

Pulley Housing

: AL / CI / SS.

• Product stored is volatile • Inert gas blanketing in tank

Guide Tube

: CS / SS.

• Vapor pressure is in excess but less than above listed mm of

Scale

: Aluminum.

Water column Approximate volume of sealing liquid is

Pointer

: AL / SS.

produced in the table.

Counter weight

: CI / SS.

Note: Transformer oil / liquid paraffin is provided if required.





FLOAT LEVEL INDICATOR WITH LEVEL SWITCH The various advantages of the float level indicator is to provide continuous liquid level measurement for bulk storage applications is further enhanced by the addition of level control. SIGMA float level indicator cum switch is specifically engineered to reduce maintenance and enhance reliability. FLI with Level Switch is the best solution in critical areas where it is not possible to use Level Switches in the inside of the tank. Typical application area includes Floating Roof Tanks, Underground Sumps where switching is not possible internally / externally. The principle of the float level indicator is to transmit movement of the float to the pointer over a set of pulleys by means of a float wire/cable. The pointer houses a magnet. A side mounting level switch is attached to the side of the board of the float level indicator. As the pointer moves closer to the magnetic field, the repelling magnet inside the switch housing actuates a set of micro-switches. The magnet latch remains in the new position until the pointer comes back within the repelling magnetic field to actuate the micro-switches. Sigma Advant-edge

Mounting Arrangement of Floating Roof Tank

Ease of maintenance, major cost reductions

Float Wire Attached to Pointer

No specific restrictions on the number of switches. Virtually non contact type of switching. Dangerous liquids are not drawn into any external chamber. NO PROCESS CONTACT.

Scale Board

Switching area is isolated from the process liquids. Set point can be changed at any point of time by simply moving the level switch to the desired switching level.

PONTOON

Once the board is installed, the switching point required is directly available on the board. Makes installation fast No nozzles to blank for maintenance. No isolation valves to control. Float Level Indicator with Level Switch

No tank downturn for maintenance of level switch. Extreme scalability – Process temperature / pressure / chemical compatibility issues with regular switches directly

Graduations

fitted to the tank are eliminated.

Float Wire Scale Board Counter Weight

Specifications Type

: 2 SPDT, Micro, 10 A @ 250 V AC / 0.2 A @ 250 V DC

Pointer

Pull Chain

On / Off Differential : within 25 mm Switch enclosure

Side Mounted Level Switch

: Die cast Aluminum IP 67 / Flame proof Group IIC

Cable Entry (Dual)

: 3/4” ET / ½”NPT


Fitting Components : AISI 304 Works: 27, Nahur Udyog Indl Permises, M. M. Malaviya Road, Mulund(W), Mumbai - 400080. INDIA . | Tel. : +91 22 2591 8567 | Fax : +91 22 2591 8566




Model Number Coding for Float Level Indicator (optional Level Switch)

FLI Float Level Indicator

Type

Design

Connection

OF-Flanged FOverhead T- Threaded Full Scale HU - Sump / S-Socket Half Scale Underground Weld F -Floating B-Butt Weld Roof

Model Decoding example: FLI-F-O-F-4-V-4m

Material of Float

Special Feature

Range in meter

4-SS304 6-SS316 4L-SS304L 6L-SS316L P-PP V-PVC T-Teflon S-Specified Material

N-None V - Vapour / Liquid seal Assembly L - Lining / Coating on Float S - Level Switch

Specify

Note

Float Level Indicator, with

All the Float Level Indicators / Float Level Indicator with Level

- Full Scale Type

Switches mentioned in this catalogue are our standard design. If

- Overhead Design

the standard items do not meet your requirements, we can modify

- Connection Flanged (specify Connection Details & Size)

them to meet your specifications and would appreciate the

- SS 304 Float

opportunity of making suggestions to cover your application, based

- Vapour / Liquid Seal Assembly

on engineering principles. SIGMA reserves the right to modify

- 0-4m

specification / design from time to time, which is deemed suitable for the product without prior intimation.

Note - Model Coding is categorized as per the specification of the product, for ease of selection and ordering. - In case of choosing multiple specification under a specific category, mention the 2nd / 3rd code with a bracket, after the 1st code. - For ordering Level Switch with Float Level Indicator, specify the number of Level Switches required. - In case of doubt, contact SIGMA for assistance in arriving at the model code / for specification.





400078. INDIA. | Tel.: +91 22 2566 0555


Automatic Tank Level Gauge (Float & Tape Type) August Series SIGMA’s AUGUST series Automatic Tank Gauges are designed to provide continuous liquid level measurement for bulk storage applications. The AUGUST is a float actuated instrument that provides continuous and reliable liquid level measurement, specifically engineered to reduce maintenance and enhance reliability.

Auto Tank Gauge Operation In principle, the AUGUST utilizes a large stainless steel float that is attached to a perforated stainless steel tape to detect the liquid level. The float traces the liquid level rise and fall due to the constant pull-back tension force provided by a power spring. The precisely perforated tape engages pins on a sprocket drive wheel that in turn drives the measurement counter mechanism. The float is guided between the guide wires that are kept straight/kink free through the tension devices. Alternatively, still wells that shall guide the float can be used where there is no provision for guide wires. This simple, rugged design makes the gauge to perform with negligible maintenance throughout its working life.

DRAIN (TOP MOUNTING) POWER WHEEL TAPE STORAGE POWER SPRING

TAPE TAPE ENTRY, SIDE MOUNTING GAUGE HEAD STORAGE WHEEL

GAUGE CHECKER

SPROCKET DRIVE

TAPE KEEPER

003

DRAIN (SIDE MOUNTING)

TAPE ENTRY, TOP MOUNTING COUNTER TAPE






Sigma Advant-edge

Gauge Construction

Gauge Shaft seals for oil filling:

Gauge Body

: Cast Aluminum Epoxy Powder Coated.

AUGUST comes with an optional gauge shaft seals that allows

Shaft

: AISI 304.

the entire gauge head to remain in light oil, for longevity, smooth

Bearing

: Brass/Delrin/Glass filled PTFE.

Counter

: Thermoplastic Components.

Float

: AISI 316/ specified.

Perforated Tape

: AISI 316.

Gauge Check Handle/Striker:

Guide wires

: Multi Strand – AISI 316.

AUGUST comes complete with an easy to grip gauge check

Tensional spring

: Plated CS/ SS optional.

Tension Device

: CS/GI/ optional materials as required.

Bottom Anchor

: CS/ AISI 304 / AISI 316/ optional

working and corrosion protection of main components in aggressive environments or where tank vapors can peek inside the gauge head.

handle. The gauge check handle when turned deflects the tape in the sheave storage assembly, thus picking up the tape and the float. This allows the testing of the power spring strength. It also is used for checking gauge calibration, plumbing of the float

Pulley Housing

Tape Keeper: AUGUST comes with a take keeper around the sprocket wheel that allows tape to be

materials as required.

alignment, or

freeing stuck-up gauges.

installed simply

by inserting the tape

around the tape keeper wheels.

(90° Elbow)

: Cast Aluminium.

Pulley

: Al / AISI 316 / specified.

Shaft

: AISI 304.

Pulley Bushing

: PTFE/Nylon/Delrin.

Specifications Tape Entry: AUGUST gauge head is uniquely designed to allow tape entry for

Range

both tank top mounting and tank-side mounting. The orientation while mounting remains unchanged and so is the viewing direction.

Hoist Mechanism: AUGUST with an optional hoist mechanism is used to hoist the float to facilitate easy tank maintenance. It is also used for high

(For higher range consult factory)

Indication

: In millimeters ( 4 digit mechanical counter)

Temperature

: 0 °C to 160 °C

Resolution

: 1 mm

Accuracy

: ± 2 mm with 300 mm diameter float for liquid of specific gravity = 0.8 and above.

viscosity liquids or the liquids which may solidify at ambient temperature. With the help of the hoist mechanism, the float is

: 0-4M, 0-8M, 0-12M, 0-16M, 0-20M

Protection

: Weatherproof to IP-65 as per IS:2147-1962

lowered at the time of measuring the level and is hoisted again.

Note Gauge Body Protection: AUGUST comes with epoxy powder coating to reduce the

All the Automatic Tank Level Gauge mentioned in this catalogue are

amount of moisture entering the gauge head through normal

our standard design. If the standard items do not meet your

breathing of the aluminum housing. It effectively seals the unit

requirements, we can modify them to meet your specifications and

from water penetration.

would appreciate the opportunity of making suggestions to cover your application, based on engineering principles. SIGMA reserves

Note: AUGUST Gauge head is a purely mechanical device, hence

the right to modify specification / design from time to time, which is

enclosure as per IS:2147 is not applicable for this item.

deemed suitable for the product without prior intimation.





Installation Options

PULLEY HOUSING GAUGE HEAD 003

TENSION DEVICE

TENSION DEVICE

SUPPORT

FLOAT

FLOAT

GAUGE HEAD

CONE ROOF TANK SIDE MOUNTING

TOP MOUNTING

PULLEY HOUSING

SUPPORT

GAUGE HEAD

STILLING WELL SIDE MOUNTING

PULLEY HOUSING

SUPPORT

GAUGE HEAD

FLOATING ROOF(WITH FLOATWELL) SIDE MOUNTING

PULLEY HOUSING

SUPPORT

GAUGE HEAD

FLOATING ROOF SIDE MOUNTING





Model Number Coding for Automatic Tank Gauge (Float & Tape Type) Level Gauge ATLG (Automatic Tank Gauge) Type S - Standard W - With Hoist Mechanism G - Gauge Head oil filled A-2+3

Optional L - Liquid Seal Assembly S - Limit Switches T - 2 wire Transmitter

Float N - None a 1 - Ø150 mm for Still Well, AISI 316 b 2 - Ø300 mm AISI 316 b 3 - Ø375 mm AISI 316 b 4 - Interface Float AISI 316 b A - Others specify

Mounting T - Top of Tank S - Side of Tank F - Floating Roof O - Others specify Range 1- 0 - 4000 mm 2 - 0 - 8000 mm 3 - 0 - 12000 mm

Guide Rods a,e,f N - None d 5 - CS 4 - SS304 6 - SS316

4. 0 - 16000 mm 5. 0 - 20000 mm A - Specified

Process Connection 1- 1 ½” BSP(M) CS A - others specify 2 - 1 ½” NPT(M) CS 3 - 1 ½” Flanged A 105 ANSI B 16.5

Tension Device N - None 3 - SS316 with SS Spring 1 - CS with CS Spring A - Others specify 2 - SS 304 with SS Spring

Model Decoding example: ATG-S - T - 1 - 1 - 2 - 4 - 1 - L Automatic Tank Gauge (Float & Tape Type) Level Gauge, with - Standard design

- Tension Device (SS 304 with SS Spring)

- Mounting on Top of Tank

- SS 304 Guide Rod

- 0 -4000 mm Range

- Ø 375 mm AISI 316 Float

- Process connection 1 ½”BSP (M) CS

- Liquid Seal Assembly

a. Guide Wires/Tension devices/Float are NOT required for floating roof tanks. Floats are required if Floating roof with float wel l is used. In this case, Guide rods may be used based on floating well tank dimensions. Accuracy of floating roof will depend purely on roof/float well movement. In case of floating roof the tape is attached to the floating roof itself. In floating roof tank installations, it is recommended that gauges be installed in a float well, rather than attaching the tape directly to the tank roof. The float well should contain a baffle to prevent the float from escaping, but also allow sufficient product movement to equalize the liquid level. No tape should be exposed outside of the roof or pipe work. If any section of the tape is currently exposed it should be replaced with a SS flexible cable,this will reduce measurement error due to wind drift. The connector between the tape and cable should not run over a conduit elbow (or pulley). b. Accuracy for the ATLG with : 300 mm diameter float is 2 mm, with 15 mm diameter float is 20 mm c. Interface float is applicable only for liquids with difference in densities = 0.2 gm/cc. d. Guide wire/ tension devices, guide rods and bottom anchor are not required when Stilling well for float is provided. e. In case guide rod option is chosen, no bottom anchor is required. f. For retrofitting on existing tanks, guide rod assembly (up to 3 M) or weighted bottom anchor (above 3 M) is recommended. This installation must be done on manhole cover. g. Gauge Head support brackets, GI Horizontal pipe for pulley , pu lley connections, GI vertical pipe, and 3 Nos tank wall support with U bolts for pipe work is part of the supply for side moun tingversions. Piping for side mounting can be provided on request. Works: 27, Nahur Udyog Indl Permises, M. M. Malaviya Road, Mulund(W), Mumbai - 400080. INDIA . | Tel. : +91 22 2591 8567 | Fax : +91 22 2591 8566




SIDE MOUNTED LEVEL SWITCH (FLOAT LEVEL SWITCH) SIGMA's Float Level Switch are compact solutions to monitor low, intermediate and high level in tanks. This rugged, quick mounting & maintenance free design is an instant choice for tanks with high insertion depths or inaccessible top and bottom. A small pivoted float forms the only sensing probe that projects within the tank. Typical applications of these sensitive and accurate devices include strong tanks, high-pressure boilers, sterilizers and process tanks. Sigma Advant-edge Glandless design eliminates leakage from vessel into switch housing even in high pressure & temperature conditions. Float arm operates on a flat face with no cavities to clog (this eliminates float arm malfunction due to unwanted accumulations) Light in weight and easy to install Wide differential versions Choice of mounting and material mix Special design for high temperature / pressure applications. Can be used with External Cages Extension rods to accommodate nozzle lengths or for increasing switching differential.

Specifications Type

: Magnetic Internal Float operated.

Float, Stem & Wetted parts Material

: SS 304 / SS 316 / PVC / PP / Ebonite / specified.

Switch Housing & Material : Weather proof / Explosion proof IIC in Cast Aluminum / Custom housing for corrosive atmosphere.

Type of Contact

: Micro, 2 SPDT.

Rating

: 10 A @ 250 V AC , 0.2 A @ 250 V DC / specified. .

Switch Differential

: 12 ± 3 mm.

Conduit

: 3/4” BS, ½” / 3/4” NPT / specified.

Pressure / Temperature

: 15 - 40 kg/cm2 / 2000C / specified.

Specific Gravity

: 0.7 and above / specified.

Process Connection, Type : 1 1/2” and above, Screwed or Flanged / specified. Miniature

able

25 NB special design available.

Float Size

il Ava

: Ø 47 or 60 mm / specified.

Note: For Safety measures, we recommend the fuses in series & also contactor / relays for start and stop function


IBR Approved Side Mounted Level Switch

of motors. Works: 27, Nahur Udyog Indl Permises, M. M. Malaviya Road, Mulund(W), Mumbai - 400080. INDIA . | Tel. : +91 22 2591 8567 | Fax : +91 22 2591 8566




Model Number Coding for Side Mounted Level Switch

SMLS

Connection

Size

Rating

Material of Flanges

Operating Pressure

Material of Float

Enclosure Class

Optional Features

Side Mounted Level Switch

F-Flanged T- Threaded

25 NB 40 NB 50 NB 80 NB 100 NB

150 # 300 # Other Specify

2-IS 2062 4-SS304 5-A105 6-SS316 4L-SS304L 6L-SS316L P-PP V-PVC S-Specified Material

1- Nominal Pressure

4-SS304 6-SS316 4L-SS304L 6L-SS316L P-PP V-PVC S-Specified Material

W-Weather Proof F-Flame Proof

P - Plug & Socket

S-Socket Weld B-Butt Weld

S120 OD x 92 mm PCD Other Specify

2- Upto 2 15 Kg/cm 3- Upto 2 40 Kg/cm 4- High Pressure

N-None

F-Cooling Fins C - With Chamber

Model Decoding example: SMLS- F - 40 - 150 # - 4 - 2 - 4 - W - P Side Mounted Level Switch, with - Flanged Connection

- SS 304 Float

- 40 NB Size

- Weather Proof Enclosure

- 150 # Rating

- Plug & Socket (specify no.of pins)

- SS 304 Flange - Operating Pressure up to 15 kg/cm

- 2 SPDT Switch is supplied as Standard 2

Note - Model Coding is categorized as per the specification of the product, for ease of selection and ordering. - In case of choosing multiple specification under a specific category, mention the 2nd / 3rd code with a bracket, after the 1st code. - For ordering IBR approved product, mention "IBR" immediately after the Product code. - In case of doubt, contact SIGMA for assistance in arriving at the model code / for specification. - The product conforms to 97/23/EC: Pressure Equipment Directive, Article 3.3 Sound Engineering Practice and 2006/95/EC: Low Voltage Directive (LVD)

Note All the Side Mounted Level Switches mentioned in this catalogue are our standard design. If the standard items do not meet your requirements, we can modify them to meet your specifications and would appreciate the opportunity of making suggestions to cover your application, based on engineering principles. SIGMA reserves the right to modify specification / design from time to time, which is deemed suitable for the product without prior intimation.





EXTERNAL CAGE LEVEL CONTROLLER SIGMA's External cage liquid level switches are very widely used for the petroleum and power industries. Anti vibration design ensures positive switch activation. Being highly versatile, cage mounted type extends to a wide range of other possible applications. Sigma Advant-edge Rugged in construction and easy to install Facilitates maintenance, inspection & cleaning High temperature and pressure versions Special coating and special designs for corrosive applications.

Specifications Center - center Distance (cc) : 150 mm - 1500 mm Orientation Type

: Vertical

Level Control

: Single Level (One float) / Single Float with two or three level, set point between two levels 40 mm min / Two Levels Dual Float.

Float & Size

: Spherical / Cylindrical, Application based/specified.

Float Material

: SS 316 / PP / PVC

Chamber

: CS/ AISI 304 / 316 / specified.

Switch Housing

: Weather proof IP 67 / Explosion proof IIA IIB, IIC

Switch

: Micro, sealed assembly available.

Current Rating

: 10 / 15 A / 250 V A.C Max / specified.

Conduit Connection

: ½” or 3/4” NPT, 3/4” to 1” ET.

Additional Features (optional):

Differential

: Fixed 12 ± 3 mm / Adjustable

For high temperature between 2500C - 5500C SS Cooling Fins are provided to reduce the temperature of the housing. Special construction of the chamber & flange ratings are designed for high-pressure applications. Vertical float type can be substituted with displacer in place of float for increasing pressure / temperature capacity. For low specific gravity liquids ranging from 0.5 to 0.8 additional fixture is provided for efficient operation of the switch.

differential / set point.

Process Connection

: Flanged / Threaded / Socket Weld

Process Orientation

: Side-Side or Side and bottom, Side-Side connection

Pressure

: 15 - 50 bar / specified.

able


IBR Approved External Cage Level Switch

Sealed Chamber Level Switch In Sealed chamber Level Switch, the Float Chamber is completely sealed with float inside the chamber. By virtue of sealed cable entry, the switch can be used for refrigerants, with low specific gravity. Special designs for 98% H2SO4 applicable is also available.





400078. INDIA. | Tel.: +91 22 2566 0555


Model Number Coding for External Cage Level Controller

ECLS

Orientation

Connection

Operating Pressure

Material of Cage

No.of Float

Enclosure Class

Switch Rating

External Cage Level Switch

SSide-Side


1-Upto 2 15 kg/cm

1-One 2-Two

BBottom-Side

S-Socket Weld

2- Upto 2 25 Kg/Cm


C-5/10 A 250 V A.C, 0.2 A, 250 V D.C

B-Butt Weld

2- Upto 50 Kg/Cm 2

4-SS304 5-A106 Gr.B 6-SS316 4L-SS304L 6L-SS316L P-PP V-PVC Other Specify

S - Specify

M - 15 A 250 V A.C, 0.25 A, 250 V D.C H - Sealed Switch, 5 A 250 V A.C, 0.2 A , 250 V D.C

Model Decoding example: ECLS - S - F - 1 - 4 - 1 - W - M - C-150 mm

Optional Features

C/C in mm

N-None

for example 150 mm

S-Adjustable Set Point L- Lining/ Coating C-Cooling Fins H - Heating Jacket P - Plug & Socket

Note SIGMA reserves the right to modify

External Cage Level Switch, with - Side-Side orientation

specification / design from time to

- Weather Proof Enclosure

time, which is deemed suitable for

- Flanged Connection (specify size & rating) - Switch rating 15 A, 250 V AC, 0.25 A, 250 V D.C - Operating Pressure up to 15 kg/cm2

- Cooling Fins

- SS 304 Cage-

- 150 mm c/c

the product without prior intimation.

- with one float

Note - Model Coding is categorized as per the specification of the product, for ease of selection and ordering. - In case of choosing multiple specification under a specific category, mention the 2nd / 3rd code with a bracket, after the 1st code. - For ordering IBR approved product, mention "IBR" immediately after the Product code. - 2 SPDT Switch with 10A @ 250V AC, 0.2 A @ 250V DC is supplied as standard. 2.

- PP (50 0 C) / PVC / Teflon max pressure rating is 8 Kg/cm - PP/PVC/Teflon switches are available with single float option only. - The product conforms to 97/23/EC: Pressure Equipment Directive, Article 3.3 & 2006/95/EC:Low Voltage Directive (LVD) - In case of doubt, contact SIGMA for assistance in arriving at the model code / for specification.

C/C C/C

C/C

C/C

Sealed Side - Side

Threaded / Socket Side Side

Flanged Side Side

With Cooling Fins





TOP MOUNTED LEVEL SWITCH Severity, adversity... whatever the conditions of environment, SIGMA liquid level controllers keep operating. Rugged design of our units offer an electrical compartment completely isolated from the product level to be monitored. This makes it to withstand the extremely severe conditions to be met with in a wide range of a wide range of Chemical, Petrochemical, Power and other Process industries. A wide range of SIGMA level controllers in an application bound material mix provide choice for one, two, three or four level monitoring by trigger related systems through contactors or relay. The level sensor termed as displacer is designed to suit high temperature and pressures. With wide differential models, the use extends to open tanks, slurry and treatment plants, neutralization pits etc. Sigma Advant-edge

Specifications

Easy installation, no manholes required.

Type

: Top Mounted Displacer Type.

Field level settings.

Connection Size & Type

: 2" and above as per ANSI, DIN or

Adjustable differential versions.

BS standard or Screwed NPT.

Can be used with external chambers.

Pressure

: up to 50 kg/cm2 / specified.

Level of operation up to 20 m.

Temperature

: 1500C / For higher temperature consult Sigma.

No rods to bend, only multi-stranded cables (ss wire) used Glandless rugged design to suit a wide spectrum of

Flange Material

pressure and temperature.

: CS / SS 304 / SS 316 / PP / PVC / Teflon / HDPE / specified.

Suitable for foaming, surging and highly viscous liquid.

Spring

: SS 316 / specified.

Spring Housing / Holder: SS 304 / SS316 / PP / PVC etc. Wire Material

: Multi stranded SS 316 / Nylon / C.S / PP / specified.

Displacer Material

: Porcelain, SS 304 or SS 316 , C.S, Rubber, Teflon Lined, PP / PVC / Teflon / specified.

Switch Housing

: Die Cast Aluminum, Weather proof or Explosion proof IIA , IIB or IIC.

Contacts (Micro Switch) : 10 A / 15 A @ 250 V AC / specified. 2 SPDT is a standard.

Specific Gravity

: 0.7 - 1.2, for others consult Sigma.

Level of Operation

: up to 20 meter

Differential

: Approx. 50 mm / specified. Style B

Style A

Style C

able


IBR Approved Top Mounted Level Switch

Ÿ

X

Ÿ

X

Ÿ

X

X





Model Number Coding for External Cage Level Controller Optional N - None P - Plug & Socket C - Cooling Fins S - Specified

TMLS Type A - Single Level AB - Three Level B - Two Level BB - Four Level C- Single Level with wide differential D- Two Level with wide differential

Enclosure Class W - Weather Proof F - Flame Proof

Operating pressure 1 - up to 20 kg/cm2 2 - up to 50 kg/cm2 S - Specified

Switch Rating C - 5 / 10 A 250 V ~, 0.2 A 250 V M - 15 A, 250 V ~, 0.25 A, 250 V H - Sealed Switch 5 A, 250 V ~ / S - Specified

Displacer Guide W - No Still Well S - Still Well C - Cage

Displacer Material 5 - CS P - PP 6L - SS 316L 4 - SS 304 V - PVC T - Teflon C - Porcelain 6 - SS 316 4L - SS 304L S - Specified

Type of Connection F - Flanged S - Screwed

Rating # 150 / 300 / Others Specify

Material of Flange 2 - IS 2062 6L - SS 316L 4 - SS 304 P -PP 5 - A 105 V - PVC 6 - SS 316 T - Teflon 4L - SS 304L S - Specified

Size 50 NB 100 NB

80 NB Others Specify

Model Coding example: TMLS - B - 1 - S - F - 4 - 80 NB - 300# - 6 - C - W - P Top Mounted Level Switch, with - Two Level - Operating Pressure up to 15 kg/cm

Style AB

- 300# Rating 2

- SS 316 Displacer

- Still Well Displacer Guide

- Switch rating 5/10 A, 250 V AC, 0.25 A, 250 V D.C

- Flanged connection

- Weather proof enclosure

- SS 304 Flange

- Plug & Socket

- Flange Size 80 NB

Style D

Ÿ

X

Ÿ

X

Ÿ

X

X

- Standard: 2 SPDT Switch is provided

Note - Model Coding is categorized as per the specification of the product, for ease of selection and ordering.

X

Style BB

- In case of choosing multiple specification under a specific category, mention the 2nd / 3rd code with a bracket, after the 1st code. - For ordering IBR approved product, mention "IBR" immediately after the Product code. 2

0

Ÿ

X

Ÿ

X

Ÿ

X

Ÿ

X

- PP/PVC/Teflon max pressure rating is 10Kg/cm - PP max temperature rating is 50 C - The product conforms to 2006/95/EC: Low Voltage Directive (LVD) per Harmonized standard EN 61010-1/1993 & Amendment No.1 - In case of doubt, contact SIGMA for assistance in arriving at the model code / for specification. - SIGMA reserves the right to modify specification / design from time to time, which is deemed suitable for the product without prior intimation.





LEVEL SWITCH (REED TYPE) SIGMA Float operated Reed Level Switch are ideally designed for liquid level indication in tanks. The design is simple and compact. Typical applications are water, diesel, chemical storage and hydraulic tanks. The level switch consists of a sealed tube inside which hermetically sealed Reed Switches are placed at points where switching operations are required. The magnetic float raises / falls with the liquid level and operates / re-operates the Reed Switch (make or break on rise / fall of liquid level specified). The REED Type Level Switch is available in Top Mounted and Side Mounted Version. Sigma Advant-edge Cost effective level detection

Specifications Float / Stem

: SS 304 / SS 316, PP, PVC / specified material

Terminal enclosure - weather proof Collars prevent false switch re-operation due to over travel of float

Terminal Enclosure

: Weather Proof / Flame Proof

SPST or SPDT REED Switches

Terminal Enclosure Material : Cast Aluminum / Plastic

Immune to electrical disturbance

Contact

: Hermetically sealed REED, SPST or SPDT

Unaffected by liquid characteristics Flanged / Screwed vessel connection.

Contact Rating

: 20 VA / 60 VA / specified.

Choice of material mix.

Contact Voltage Max

: 250 V AC or 120 V DC

Maximum Pressure

: 5 kg/cm2 for PP / PVC, 15 kg/cm2

Multiple Level (Single / Double / Triple...) Plug & Socket type of cable connection where desired

for SS, consult Sigma for higher pressure.

Maximum Temperature

: PP / PVC: 550C , SS: 1000C

Float Size

: Application based

Note: For safety measure / contact protection, we recommend use of fuses in series and Relays / Contactors for start / stop function of motors / buzzer / any drive function OIL LEVEL SWITCH WITH CHAMBER

able


IBR Approved Level Switch (REED Type)





Model Number Coding for Top Mounted Level Switch (REED Type) LSR

Type

T - Top Mounted Level Switch (REED Type) S - Side Mounted Level Switch (REED Type)

A- Single Level B - Two Level AB Three Level BB Four Level

Operating Pressure

Type of Connection

Material of Flange

Float Material

Enclosure Class

1-Up to 2 3 kg/cm

F - Flanged S - Screwed

2 - IS 2062 4 - SS304 5 - A 105 6 - SS316 4L-SS304L 6L-SS316L P-PP V-PVC T-Teflon Others Specify

4 - SS304 6 - SS316 4L-SS304L 6L-SS316L P-PP V-PVC T-Teflon N-Nylon


2 - up to 2 10 kg/cm 3 - up to 2 15 kg/cm 4- Custom

Switch

Optional Features

S-SPDT D-SPDT

N-None P - Plug & Socket C- with Chamber

Others Specify

Only Single Level is available in Side Mounted Level Switch (REED Type)

Model Decoding example: LSRT - B - 1 - F - 2 - 4 - W- S - N

Note

Top Mounted Level Switch Reed Type, with

All the Level Switch (REED Type) mentioned in this

- Two Level

catalogue are our standard design. If the standard items

- Operating Pressure up to 3 kg/cm

2

do not meet your requirements, we can modify them to

- Flange connection

meet your specifications and would appreciate the

- IS 2062 Flange

opportunity of making suggestions to cover your

- SS 304 Float

application, based on engineering principles. SIGMA

- Weather Proof enclosure

reserves the right to modify specification / design from

- 1 SPDT Switch

time to time, which is deemed suitable for the product

- No Special feature

without prior intimation.

Note - Model Coding is categorized as per the specification of the product, for ease of selection and ordering. - In case of choosing multiple specification under a specific category, mention the 2nd / 3rd code with a bracket, after the 1st code. - For ordering IBR approved product, mention "IBR" immediately after the Product code. - The product conforms to 2006/95/EC: Low Voltage Directive (LVD) per Harmonized standard EN 61010-1/1993 & Amendment No.1 - Side mounted option is available in Single Float Type. - In case of doubt, contact SIGMA for assistance in arriving at the model code / or specification.





CONDUCTIVITY LEVEL SWITCH SIGMA's Conductivity Level Switches are simple, low cost and reliable instruments, for detection of conductive liquids. The Level Switch is available in single / multipoint level detection. A low alternating voltage is impressed between the active electrode(s) and the vessel wall / reference electrode. When the liquid comes in contact with the tip of the active electrode(s), an electrical path to ground is completed, closing the loop, resulting in flow of current. The current is transmitted to the control unit directly (in case of multiwire / integral design) or through a pre amplifier housed inside the probe head (in case of two wire design). The amplifier inside the control unit processes the signal and amplifies it to drive LED/ relay circuits. Sigma Advant-edge No Moving parts Power Supply Indication LED Indication / Relay Output for 4 different preset levels Selectable high / low level alarm Special probe design to tackle acids. Latching type relay design for direct auto pump operation Auto sensitivity to liquid conductivities > 25 µs Option of stand alone system

Specifications Enclosure

: Cast Aluminum, Weather proof IP 66 & Explosion Proof IIA IIB

Electrode Type

: Solid up to 4 m, suspended upto 10 m

Electrode MOC

: SS 304 / SS 316 / Haste alloy / Titanium Tips / specified.

Electrode insulation / Temperature

: PVC (700C), PTFE (2000C)

Reference (R) / Control Electrode (C) : 1 / 4 (or custom) Minimum Conductivity : 25 µs Power Supply

: 230 V AC / 110 V DC +/- 10 % , 50 HZ / 24 V DC

Output relay contact rating

: 5 A at 230 V AC

Process Connection

: CS / SS 304 / SS 316, 1 ½” & above Flanged / Screwed to ANSI / specified.

Cable entry

: ½” NPT (F) or 3/4” ET / specified.

Mounting

: Vertical / Horizontal

Pressure

: 20 kg/cm2

Service

: Water, Acids, Alkali

Note

: 1 ½”is Flange is for up to 2 levels only.






Model Number Coding for Conductivity Level Switch

CLS

Conductivity Level Switch

Mounting

Electrode

V - Vertical H - Horizontal

S - Solid HSuspended

Electrode Material

Electrode Insulation

Control Electrode

4-SS304 6-SS316 H-Haste Alloy

P - PVC F - PTFE S - Others Specify

C1 - First C2 - Two C3 - Three C4 - Four S - Others Specify

T- Titanium S - Specified

Process Connection

Cable Entry

Electrode Size

F - Flanged

1- 1/2” NPT(F)

S - Screwed

3 - 3/4” ET S - Others specify

Specify length of Reference & control electrode(s)

While ordering, specify Process Connection Material, size (Flange or Thread) and Flange rating

Model Decoding example: CLS - V - S - 4 - P - C2 - F - 1- R-1000 - C1-500- C2 - 350 Conductivity Level Switch, with - Vertical Mounting option

- Cable Entry ½”NPT (F)

- Solid Electrode

- Reference electrode length - 1000 mm

- SS304 Electrode

- 1st Control electrode length - 500 mm

- Electrode Insulation: PVC

- 2nd Control electrode length: 350 mm

- Two Control Electrodes - Process Connection, Flanged

Note - Model Coding is categorized as per the specification of the product, for ease of selection and ordering. - In case of choosing multiple specification under a specific category, mention the 2nd / 3rd code with a bracket, after the 1st code. - In case of doubt, contact SIGMA for assistance in arriving at the model code / for specification.

Note All the Conductivity Level Switches mentioned in this catalogue are our standard design. If the standard items do not meet your requirements, we can modify them to meet your specifications and would appreciate the opportunity of making suggestions to cover your application, based on engineering principles. SIGMA reserves the right to modify specification / design from time to time, which is deemed suitable for the product without prior intimation from time to time.





PNEUMATIC LEVEL SWITCHES SIGMA's Pneumatic Level Switches are used in application where electrical switching is not recommended or electricity is not available. The working principle is the same, except that the magnet indirectly actuates a 3/2 valve for changeover. This system requires minimum 2 kg/cm2 clean filtered air, preferably through an AFR. In Order to protect the switch assembly from contaminants, filtered and dried gas/air supply is recommended Side Mounted : (with / without cage)

Top Mounted : Float/ Displacer (with/without cage)

Buoyancy force of process liquid on a float causes the float to move

Operation is based upon simple buoyancy, whereby a float or a

with the liquid's surface. Float movement pivots a magnet into the

spring loaded weighted displacer rises following the liquid level. A

field of a like-charged switch magnet. As the magnets repel each

magnetic sleeve, connected to the float / displacer, moves up and

other, the switch magnet moves, actuating the switch.

operates within a non-magnetic enclosure tube. The magnetic sleeve

Free swinging float arm

attracts a pivoted magnet, actuating a switch mechanism located

- No cavities to clog (eliminates “Float Stick”)

out-side the enclosure tube to give NO or NC changeover. A fall of liquid level will de-actuate the switch mechanism

Magnetically activated - No seals to maintain / No leaks / No fugitive emissions.

Specifications Operating Pressure

: 2 - 8 Bar

Permissible Fluids

: Air/Inert Gas

Fluid temperature

: -10 to +50 Deg C

Connection size

: 1/8” NPT / ¼” NPT

Switch Differential

: Within 20 mm (float type)

Process Pressure

: Up to 20 Bar / specified

Process Temperature

: -10 to 75 Deg C / specified.

For Higher Process pressure / temperature consult Sigma.

Consult Sigma for ordering code Application Areas of Pneumatic Level Switches Note

- Scrubbers and Separators

- Bulk Liquid Storage

- H2S & CO2 Service

- Radiator Level

All the Pneumatic Level Switches mentioned in this catalogue are

- Process Vessels

- Oil Sumps

our standard design. If the standard items do not meet your

- Day Tanks

requirements, we can modify them to meet your specifications and

- Water / Fuel Tanks

Ava

le ilab


IBR Approved Pneumatic Level Switch

would appreciate the opportunity of making suggestions to cover your application, based on engineering principles. SIGMA reserves the right to modify specification / design from time to time, which is deemed suitable for the product without prior intimation.





MAGNETIC FLOAT OPERATED LEVEL TRANSMITTER SIGMA's Magnetic Float Operated Level Transmitter is a simple and reliable technique for continuous level indication and control of any liquid, chemically compatible with the (sensor) material, unaffected by electrical conductivity, temperature, pressure or viscosity. The float is designed for variety of liquids. Operating principle The Transmitter consists of a float & guide stem assembly in nonmagnetic material to achieve undisturbed flux. A chain of closely spaced glass encapsulated reed switches & resistors are placed inside the guide tube. During rise and fall of liquid level, the magnetic float moves & actuates a reed switch in the chain. The sensed voltage is fed to the transmitter located in the enclosure for conversion to a signal of 4-20 mA.

Specifications Span (L)

: up to 3 m / specified.

Resolution

: 10 mm

Mounting

: Top

Enslosure

: Cast Aluminum Weather proof to IP 67 or Explosion proof IIA & IIB.

Conduit Connection

: Brass, 3/4" ET or 1/2" NPT

Wetted Parts

: SS304, SS316, PP / specified.

Float(Material & Size)

: Suitable for process parameter.

Process Connection

: 2" and above Flanged or threaded to ANSI / BS / DIN std.

Output

: DC 4-20 mA (isolated) or 1 to 5 VDC (optional).

Wiring System

: 2 Wire

Temperature

:1000C / Specified

Test Pressure

:10 kg/cm2 / Specified.

Optional

:Process Indicator with alarm.

Application : Storage Tanks (Fuel, Oil, Chemical, Water), Pressurized Vessels, Waste Water Treatment Plant.

Sigma Advant-edge Continuous 'Float Type' Analog Sensor, in materials, resistive to most liquids Pre calibrated at factory-No Field Calibration required 4-20 mA, 2 wire processed output signal High Resolution & Repeatability

Model No.Coding - Magnetic Float Operated Level Transmitter

Process Connection

Wetted Parts

Range (mm)

Sigma F - Flanged Magnetic S - Screwed Float Operated Level Transmitter

4-SS304 6-SS316 P-PP S-other specify

Specify in meter

SIML-TX

While ordering, specify: 1. Process Connection Material & size (Flange or Thread) and Flange rating. 2. Conduit Connection

Liquid level or liquid / liquid interface detection Length up to 3.5 m, RS-232, RS-485 compatible NOTE: SIGMA reserves the right to modify specification / design from time to time, which is deemed suitable for the product without prior intimation.






SIGHT FLOW INDICATOR (FLOW GLASS) SIGMA's Sight Flow Indicator (Flow Glass) are designed to facilitate instant visual indication of liquids flowing through pipes even from a distance. Visual inspection and proper control of vital areas are important in processes for proper operation of well-designed plants. These are available in various types such as Flapper, Drip Lip, Full View, Elbow etc. with Double or Single windows in Flanged or Screwed and other end connection. For ease of installation, Flanged Type for sizes 3" and above are preferred. Sigma Advant-edge Simple and rugged in construction Easy Installation Customized Material mix Process connection extend to a wide range of sizes Variety of models to choose from Clear Visual indication even from a distance Special coatings for specific application

Specifications Line size

: up to 16" / specified.

Body Material

: Carbon Steel / SS 304 / SS 316 / SS 316L, Bronze / Cast Iron (Grade 20 or WCB), PVC / PP / Teflon or specified material / lining / specified.

Cover Plate

: Cast Iron, Steel and other materials.

Flapper / Rotor

: SS / Teflon / PVC / PP / Nylon / specified.

Gasket

: Neoprene, Klingerite, Compressed Asbestos, Viton ,Rubber, Teflon, Non Asbestos, Spiral Wound, Grafoil etc.

Glass

: Toughened Soda Lime Glass (Temperature upto 1500C) Oil tempered or toughened borosilicate (Temperature up to 3000C)

Connection

: Flanged type - ANSI, BS, DIN JIS Standard or Screwed Type - NPT, BSP, BSPT, API or METRIC thread.

Optional

: High temperature jacketed types, Frost shield, Illuminator etc., Also available Full View Lantern Type .

able


IBR Approved Sight Flow Indicator





Model Number Coding for Sight Flow Indicator

SFI

Indicator

Connection

Operating Pressure

Window Material

Material of Body

Additional Features

Connection Size & Rating

Sight Flow

F-Flapper


1-Upto 15 kg/cm2

T- Toughened Indigenous

S-Socket Weld

S- Specify Pressure

B-Borosilicate

2-IS 2062 5-A105 B-106 Gr.B W-WCB

N-None J-Heating / Cooling Jacket

Specify size & Rating for example 25 NB 150 # or 40 NB SW or 20 NB NPT

R-Rotor P-Plain D-Drip Lip FV-Full View B-Ball Type S-Specified

B-Butt Weld

O-Oil Tempered Sodium Silicate CI-Cast Iron 4-SS304 A-Alumino Silicate 6-SS316 Q-Quartz 4L-SS304L P-Acrylic 6L-SS316L P-PP V-PVC T-Teflon

L- Lining/ Coating I-Illuminator S-Specific Requirement F-with Flow Switch


Model Decoding example: SFI - F - F - 1 - B - 4 - J -25 NB 150# SFI Sight Flow Indicator, with - Flapper Indication

- SS304 Body

- Flanged Connection

- Heating / Cooling Jacket

- Operating Pressure upto 15 kg/Cm2

- Flange size 25 NB

- Borosilicate Glass

- Flange Rating 150 #

Note - Model Coding is categorized as per the specification of the product, for ease of selection and ordering. - In case of choosing multiple specification under a specific category, mention the 2nd / 3rd code with a bracket, after the 1st code. - For ordering IBR approved product, mention "IBR" immediately after the Product code. - The product conforms to 97/23/EC: Pressure Equipment Directive, Article 3.3 Sound Engineering Practice - In case of doubt, contact SIGMA for assistance in arriving at the model code / for specification.

Note All the Sight Flow Indicators mentioned in this catalogue are our standard design. If the standard items do not meet your requirements, we can modify them to meet your specifications and would appreciate the opportunity of making suggestions to cover your application, based on engineering principles. SIGMA reserves the right to modify specification / design from time to time, which is deemed suitable for the product without prior intimation.





FLOW SWITCH Sigma Flow Switch is an extension of the level switches. There are two types of flow switches : one for low flow / line size up to 50 mm line size (Model FS 1000) and another from 25 mm onwards up to 800 mm or above (Model FS 1010). Operating Principle Model FS 1000 is a valve type Flow Switch wherein an increase in flow through the body raises the valve disc depending upon the flow. This in turn raises the magnetic sleeve moving inside a non-magnetic enclosure. The movement of the sleeve attracts the magnet located outside the tube which in turn actuates a micro switch. Decrease in flow reverses the action. Model FS 1010 is a target type which moves from a vertical position to a near horizontal position as the flow increases. This change in position moves a magnetic sleeve in a non-magnetic enclosure. The movement of the magnetic sleeve attracts a magnet which in turn actuates a micro switch. Decrease in flow brings the target back to the vertical position. Application: The Flow Switches are used to sense the start or stop of non-viscuos liquid flow like water, gas, chemicals or any other flowing medium. They are used in interlock systems for ensuring minimum flow through pipe lines before starting equipments. In cooling water these flow switches are used to shut down the pumps, blowers, fans should the flow decreases below a predetermined limit.





Specifications Model No.FS1000

Model No.FS1010

Type

Disc Type

Target Type

Size

15 to 50 mm

25 mm to 800 mm or above

Body

CS, Brass, Bronze, SS304/SS316/specified C.S / SS 304 / SS 316 / specified

Trim

SS 304 / SS 316 / specified

SS 304 / SS 316 / specified

Connection Size

Screwed or Flanged in required size

1 - 2 1/2" screwed NPT / BSP or flanged to required standard / size.

Range Adjustment

By adjusting the screw on top of switch

By adjusting the screw on top of switch

Switch Enclosure

Weather proof IP 67 / Explosion proof IIC

Weather proof IP 67 / Explosion proof IIC

Switch Type

Micro

Micro

Contacts

SPDT 10 A / 15 A @ 250 V AC

SPDT 10 A / 15 A @ 250 V AC

Conduit

upto 3/4" NPT / 1" BS

upto 3/4" NPT / 1" BS

10 - 50 kg/cm2 / specified

10 - 50 kg/cm2 / specified

1500C / specified

1500C / specified

Max. operating Pressure Max operating Temperature

Note: - Specify Line size, Material of Construction, along with Model number for ordering. - Spool piece for Model F1010 directly connecting the flow switch in between the pipeline will be supplied with or without Sight Windows only if ordered separately.

Sigma Advant-edge

Note

Flow Switches are available from 15 mm to 800 mm or more

All the Flow Switch mentioned in this catalogue are our standard

Flow actuation point field adjustable when switch is in operation

design. If the standard items do not meet your requirements, we

Flanged or screwed connection

can modify them to meet your specifications and would appreciate

By trimming the vane length, the same flow switch can be used

the opportunity of making suggestions to cover your application,

for smaller line size in model FS 1010.

based on engineering principles. SIGMA reserves the right to

Magnetic coupling eliminates diaphragm or bellows of

modify specification / design from time to time, which is deemed

conventional switches.

suitable for the product without prior intimation.

Sight windows can be provided for model FS 1010 to have visual observation of the flow.






CONDENSATE POT / SEAL POT CONDENSATE POTS are used to catch and hold condensate and foreign material. This helps keep manifold orifices clean and free of foreign material. They are located upstream of the instrument and have a bottom drain so that they may be cleaned. The condensate pots are available in a range of materials. Installation can be either vertical or horizontal lines between primary (Flow Meter) and the secondary (transmitter/ gauge) to act as a barrier to the line fluid permitting direct sensing of the flow conditions. Units should be mounted at the same level minimizing possible error that could arise due to unequal head of fluid in the connecting pressure lines. Typical industry applications include: refineries, Power Plants, Chemical and Petrochemical, Steel Plants and other process industries. SEAL POTS (sometimes called condensate pots) are used to allow a liquid seal between the instrument and flowing gases such as steam. Their function is to keep the liquid level constant in the impulse tubes. For example, in boiler liquid level applications the high pressure (HP) side of a differential pressure transmitter is connected to the vapor space on top of the steam drum. Steam condenses in the chamber or seal pot and fills the impulse line with condensate. The seal pot is located to allow the condensate to drain back to the source thus keeping the liquid level constant. NOTE: Seal and Condensate chambers are considered to have the same pressure rating as ASTM 106 Gr.B pipe of the same thickness. This pressure varies depending on the location and code being used. Unless otherwise specified, 50 bar is a minimum rating provided. Temperature rating will depend on material selected & working pressure as per pipe standards.

Specification (Size)

P1

Type

Size

Pipe Schedule

Ø (mm)

A B C D E F G

2 1/2” 3” 3” 4” 4” 6” 6”

80 mm 40 mm 80 mm 80 mm 160 mm 80 mm 160 mm

73 88.9 88.9 114.3 114.3 168.3 168.3

Approx. Length (mm) Capacity (l) 245 280 280 350 350 430 430

0.5 1.0 0.9 2.5 1.7 5.5 4.2

Note: Above values are provided only as a guide. Many other combinations of schedules and lengths can be provided to match your requirements.

Note All the Condensate / Seal Pot mentioned in this catalogue are our

P3

P4

standard design. If the standard items do not meet your requirements, we can modify them to meet your specifications and would appreciate the opportunity of making suggestions to cover

P5

P6

your application, based on engineering principles. SIGMA reserves the right to modify specification / design from time to time, which is deemed suitable for the product without prior intimation from time

able


P2

IBR Approved Condensate Pot





400078. INDIA. | Tel.: +91 22 2566 0555


Model Number Coding for Condensate Pot

SICP

Type (ref. Table)

Sigma Condensate Pot

A B C D E F G O-Others Specify

Pressure (bar)

Material of Construction

1 - 50

4-SS304 6-SS316 BASTM 106 Gr.B

Connection Size

Connection Type

1- 1/4”


2- ½” 3- 3/4” 4 - 1” S - specify

S - Socket Weld T - Threaded

2 - 100 3 - 150 4 - 200 S - Others specify

Specify the following for P1 to P6, whichever is required

Type

Rating

N - NPT

3 - 3000 #

B - BSP P - BSPT S - Others specify

6 - 6000 # S - Others specify

Model Decoding example: SICP - A - 1 - 4 - P1(1S3) - P2(1S3) - P3(2TN) Sigma Condensate Pot, with - Type A specification - 50 bar pressure - Material of Construction SS 304 - S3 304 Flange / Valve - P1 - (1/4”, SW 3000#) - P2 - (1/4”, SW 3000#) - P3 - (½” NPT Thread )

Note - Model Coding is categorized as per the specification of the product, for ease of selection and ordering. - For ordering IBR approved product, mention "IBR" immediately after the Product code. - In case of doubt, contact SIGMA for assistance in arriving at the model code / for specification.





MANIFOLDS Sigma’s Manifold Valves provide a safe, conventional method of isolating, blocking, bleeding and calibrating instruments, meters and pressure transmitters. These valves are available in numerous body, bonnet and seal configurations with NPTF, Tube Fittings and / or instrument flange connections. The manifold valves operate up to 415 kg/cm2. Choice of manifold valve with different body patterns and hard seat models utilizing either a vee, ball or non rotating stem etc are available. Valve Design (Model) / configuration: Remote Line Mounting: 2, 3 and 5 bonnet Direct Mounting: 2, 3 and 5 bonnet, single flange Direct Mounting: 2 and 3 bonnet, dual flange Direct Mounting: 3 and 5 bonnet - H type Material of Construction: SS 316, SS 316L, SS 304, Carbon Steel, Monel, Hastalloy. End Connection: NPT / BSPT / BSP Rating: upto 6000 PSI. For Ordering Code / Model No., contact Sigma with the Manifold specification.

Note SIGMA reserves the right to modify specification / design from time to time, which is deemed suitable for the product without prior intimation from time to time.






INSTRUMENTATION FITTINGS Sigma’s Tube fittings are designed with double ferrule for leak proof, torque free seal at all tubing connections. Fittings confirm to ANSI 31.1, ANSI B 31.2, ANSI Sec VIII and BS 4368. Range: 1/8” OD to 1” OD Tube size. / 4 mm to 25 mm OD Tube Size. End Connections: BSP / BSPT / NPT Ratings: up to 6000 PSI MOC: SS 304, SS 316, SS 316L, Brass, Monel, Teflon

PIPE FITTINGS For high pressure applications on hydraulic and pneumatic lines, fittings are manufactured upto a rating of 10000 PSI as per DIN 2353 & FS 8801 - 8805 standards. Forged fittings as per ASME B 16.11.

Material of Construction: SS, Carbon Steel & Alloy STeel End Connection: 1/4” to 2” NPT / BSPT / BSP/ Metric, UNF, S.W & B.W. For Ordering Code / Model No., contact Sigma with the Instrumentation Fittings specification.







NEEDLE VALVES Sigma’s Needle Valve are available in two way, three way, multiport, single block & bleed, double deck and bleed. These Needle valves are available in variety of end connections screwed male/female pipe ends which confirm to ferrule designs. Valves as per custom needs with any end connections, for pressure ranging from 10 kg/cm2 to 700 kg.cm2, can be offered. Isolation needle valve upto 10000 PSI are available for hassle free long life in process lines. These valves can be used to isolate, calibrate and drain the process lines. Material of Construction: SS 316, SS 304, Brass, Carbon Steel, Monel, Hastalloy. Range: 1/8” to 1” threaded. 1/8” OD to 1” OD suitable for tube end. 4 mm OD to 25 mm OD suitable for tube end. End Connection: NPT / BSPT / BSP. For Ordering Code / Model No., contact Sigma with the Valve specification.







CUSTOM PRODUCTS

SYPHON

TEHRMOWELL

NON RETURN VALVE

BALL VALVE

SPACER RING

PUSH BUTTON VALVE

MALE / FEMALE GAUGE COCK VALVE

OVAL ADAPTOR

ILLUMINATOR FOR REFLEX LEVEL GAUGE

Note: All the custom built products (Fittings) mentioned in this catalogue are our standard design. Contact SIGMA with technical TUV India Private Ltd.

data, for ordering code. SIGMA reserves the right to modify specification / design. Works: 27, Nahur Udyog Indl Permises, M. M. Malaviya Road, Mulund(W), Mumbai - 400080. INDIA . | Tel. : +91 22 2591 8567 | Fax : +91 22 2591 8566




CABLE FLOAT (TILT TYPE) SWITCH Cable Float Switch (Tilt Type) has a double chamber construction to make it absolutely hermetic. Switch differential is set with the help of a counter weight that can be adjusted alongside the cable of the switch. Its non-toxic body materials and mercury-free operated micro switch enable its use in drinking water applications. Specifications

APPLICATION

Cable Material

: PVC / Neoprene.

Maximum Load

: 10 A 250 V AC.

Contact Type

: micro switch with NO & NC contact.

Switch Angle

: ± 450.

Temperature

: 0 - 500C / Specified.

Test Pressure

: 1 kg/cm2 / Specified.

Pump Protection

Specific Gravity (Liquid) : 0.8 and above. Enclosure

: PP

Protection

: IP 68.

Process Connection

: 6”Flanged or specified.

(if required) Cable length

: 5 / 10 / 15 m.

Filling Control

Model No.Coding - Cable Float (Tilt type) Level Switch

Sigma Cable Float Level Switch

Cable Material P - PVC NNeoprene

Switch Differential

SICF

High Switch Level

Cable Process Length (m) Connection 1-5m 2 - 10 m 3 - 15 m

6” Flanged or specified (optional)

Low Switch Level

N - None

Note SIGMA reserves the right to modify specification / design from time TUV India Private Ltd.

to time, which is deemed suitable for the product without prior intimation.


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