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Chandler Model 38 Ranarex Gravitomet
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Offices
USA - HEADQUARTERS AMETEK Process Instruments 150 Freeport Road Pittsburgh, PA 15238, USA Phone: 412-828-9040 Fax: 412-826-0399
USA - Delaware AMETEK Process Instruments 455 Corporate Boulevard Newark, Delaware 19702, USA Phone: 302-456-4400 (Main) 800-537-6044 (Service) 800-222-6789 (Ordering) Fax: 302-456-4444
USA - Texas AMETEK Process Instruments 7950 Whithorn Drive Houston, Texas 77095, USA Phone: 281-463-2820 Fax: 281-463-2701 USA - Oklahoma Chandler Engineering 2001 North Indianwood Avenue Broken Arrow, OK 74012, USA Phone: 918-250-7200 Fax: 918-459-0165 CANADA AMETEK Process Instruments
GERMANY AMETEK GmbH Postfach 2165 D-40644 Meerbusch OR Rudolf-Diesel Strasse 16 D-40670 Meerbusch Germany Phone: 49-21-59-9136-0 Fax: 49-21-59-9136-39
SINGAPORE AMETEK Singapore PVT. Ltd. 10 Ang Mo Kio Street 65 #05-12 Techpoint Singapore 569059 Republic of Singapore Phone: Phone: 65-484-23 65-484-2388 88 Fax: 65-481-6588 FRANCE AMETEK - APIF Rond Point de l’épine des champs Buroplus Bat D 78990 Elancourt, France Phone: 33 1 30 68 89 20 F a x : 33 1 3 0 38 8 9 2 9 CHINA Sign up to vote on this title AMETEK Process Instruments Useful Not useful Room 406, Metro Tower No. 30 Tian Yao Qiao Road Shanghai, 200030
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Offices
USA - HEADQUARTERS AMETEK Process Instruments 150 Freeport Road Pittsburgh, PA 15238, USA Phone: 412-828-9040 Fax: 412-826-0399
USA - Delaware AMETEK Process Instruments 455 Corporate Boulevard Newark, Delaware 19702, USA Phone: 302-456-4400 (Main) 800-537-6044 (Service) 800-222-6789 (Ordering) Fax: 302-456-4444
USA - Texas AMETEK Process Instruments 7950 Whithorn Drive Houston, Texas 77095, USA Phone: 281-463-2820 Fax: 281-463-2701 USA - Oklahoma Chandler Engineering 2001 North Indianwood Avenue Broken Arrow, OK 74012, USA Phone: 918-250-7200 Fax: 918-459-0165 CANADA AMETEK Process Instruments
GERMANY AMETEK GmbH Postfach 2165 D-40644 Meerbusch OR Rudolf-Diesel Strasse 16 D-40670 Meerbusch Germany Phone: 49-21-59-9136-0 Fax: 49-21-59-9136-39
SINGAPORE AMETEK Singapore PVT. Ltd. 10 Ang Mo Kio Street 65 #05-12 Techpoint Singapore 569059 Republic of Singapore Phone: Phone: 65-484-23 65-484-2388 88 Fax: 65-481-6588 FRANCE AMETEK - APIF Rond Point de l’épine des champs Buroplus Bat D 78990 Elancourt, France Phone: 33 1 30 68 89 20 F a x : 33 1 3 0 38 8 9 2 9 CHINA Sign up to vote on this title AMETEK Process Instruments Useful Not useful Room 406, Metro Tower No. 30 Tian Yao Qiao Road Shanghai, 200030
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Table of Contents CHAP CHAPTE TER R 1 Over Overvi view ew
Chandler Model 388 Ranarex Gravitometer ................................................. 1-1 Theory of Operation .............................................. ......................................................................................... ........................................... 1-2 Zero Position Position - Reference Air Only ....................................................... .......................................................... ... 1-2 Reading Position Position - Unknown Gas and Reference Reference Air ........................... 1-3 Measuring Relative Density ............................................. ............................................................................. ................................ 1-4 1-4 Selector Valve ............................................ .................... ............................................... ............................................. ......................1-4 Motor .......................................... .................... ............................................. ............................................. .................................... ..............1-4 1-4 Portable Gravitometer ................................................... ....................................................................................... .................................... 1-4 Options ............................................ ................................................................................................ .................................................................... ................ 1-5 Stationary Model ............................................ ......................................................................................... ............................................. 1-5 Portable Model............................................................................................. Model............................................................................................. 1-5 Technical Support ...................................................... .............................................................................................. ........................................ 1-6 CHAP CHAPTE TER R 2 Spec Specif ific icat atio ions ns
Stationary Model ....................................................... ............................................................................................... ........................................ 2-1 Chart Drive................................................. Drive ................................................................................................... .................................................. 2-1 Ship Weight .......................................................... .................................................................................................. ........................................ 2-2 Portable Model ....................................................... ................................................................................................... ............................................ 2-3 Ship Weight .......................................................... .................................................................................................. ........................................ 2-3 CHAP CHAPTE TER R 3 Inst Instal alla lati tion on
Inspect Shipping Contents ......................................................... ............................................................................... ...................... 3-2 Mechanical Installation .................................................... ..................................................................................... ................................. 3-3 Location and Environment ................................................... ....................................................................... .................... 3-3 Sign up to vote on this title Electrical Installation ........................................................... .................................................................................. ....................... 3-4 Useful Not useful Conditioning the Gas and Air Samples ........................................................ ......................................................... . 3-5 Dry Reference Air ..................................................... ....................................................................................... .................................. 3-5 Pressure 3-5
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CHAPTER 4 Operation
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Pointer Lock ........................................................................................................ 4-1 Procedure ............................................................................................................ 4-2 Instructions for Operation ......................................................................... 4-2 Start .......................................................................................................4-2 Reading the Gas .....................................................................................4-2 Shutting Down ......................................................................................4-2 Helpful Tips ........................................................................................................ 4-3 Zero Adjustment ......................................................................................... 4-3 Response Time ............................................................................................. 4-3 Over-Pressure Protection ........................................................................... 4-3 Purging to 1.000 after Measuring a Gas ................................................... 4-3 CHAPTER 5 Calibration
Calibrating the Ranarex Gravitometer ........................................................... 5-1 Zero Adjust................................................................................................... 5-1 Sensitivity ..................................................................................................... 5-1 Span Adjustment ......................................................................................... 5-2 Calibration Pulley .............................................................................................. 5-3 Test Procedure for Calibration Pulley ...................................................... 5-3 Additional Calibration Pulley Sizes.......................................................... 5-4 You're Reading a Preview CHAPTER 6 Servicing & Troubleshooting
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Service and Maintenance ................................................................................. 6-1 Selector Valve ............................................................................................... 6-1 Download With Free Trial Cleaning the Valve .................................................................................6-1 Polishing the Valve.................................................................................6-1 Pointer Lock ................................................................................................. 6-2 Connecting Tape .......................................................................................... 6-3 Tracking the Tape ...................................................................................6-3 Cleaning the Tape ..................................................................................6-3 Sign up to vote on this title Replacing the Tape .................................................................................6-3 Useful Not useful Idler Bearing ................................................................................................ 6-3 Disassembling the Gravitometer ..................................................................... 6-4
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Troubleshooting ................................................................................................. 6-7 Performance Checks ................................................................................... 6-7 Check air and gas flow. ..........................................................................6-7 Impeller speed check ...............................................................................6-8 Frictionless indicator response ............................................................... 6-8 Check for internal leaks ..........................................................................6-9 Check the indicator balance .................................................................. 6-10 Check the silica gel in the dryer ........................................................... 6-11 Gravitometer calibration ......................................................................6-11 CHAPTER 7 Replacement Parts CHAPTER 8 Drawings
Assembly Procedure .......................................................................................... 8-1 Cam and Pointer Assembly .............................................................................. 8-3 Transformer ......................................................................................................... 8-4 Cordsets ............................................................................................................... 8-4 APPENDIX A Inverter
General Information ......................................................................................... A-1 Damaging the Inverter .............................................................................. A-1 Installing the InverterYou're ...................................................................................... A-2 Reading a Preview Check Vehicle Polarity ............................................................................... A-2 Unlock full access with a free trial. Negative-Grounded System .................................................................. A-2 Positive-Grounded System ................................................................... A-2 Download With Free Trial Choosing a Location .................................................................................. A-2 Cable Installation ....................................................................................... A-2 Permanent Installation ......................................................................... A-2 Temporary Installation ......................................................................... A-3 Inverter Connections ................................................................................. A-3 Connection Polarity .............................................................................. A-3 Sign up to vote on this title Inverter Operation............................................................................................ A-5 Useful Not useful Stopping the Inverter ................................................................................ A-5 Regulating the Inverter Voltage ............................................................... A-5 Voltage too low A-5
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Safety Notes Sheet Music
WARNINGS, CAUTIONS, and NOTES contained in this manual emphasize critical instructi as follows:
! WARNING
!
An operating procedure which, if not strictly observed, may result in personal injury or environmental contamination.
An operating procedure which, if not strictly observed, may result in damage to the equip
CAUTION
Important information that should not be overlooked.
NOTE
You're Reading a Preview
Electrical Safety
Unlock full access with a free trial.
Up to 2 kV may be present in the analyzer housings. Always Download With Free Trial shut down power source(s) be performing maintenance or troubleshooting. Only a qualified electrician should make elect connections and ground checks.
Any use of the equipment in a manner not specified by the manufacturer may impair the sa protection originally provided by the equipment. Sign up to vote on this title
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Warning Labels Sheet Music
These symbols may appear on the instrument in order to alert you of existing conditions.
PROTECTIVE CONDUCTOR TERMINAL (BORNIER DE L’ECRAN DE PROTECTION) Schutzerde
CAUTION - Risk of electric shock (ATTENTION-RISQUE DE DÉCHARGE ÉLECTRIQUE) Achtung - Hochspannung Lebensgefahr You're Reading a Preview
CAUTION - (Refer accompanying documents) Unlock full accessto with a free trial.
(ATTENTION-SE RÉFERER AUX DOCUMENTS JOINTS) Download With Free Trial Achtung (Beachten Sie beiliegende Dokumente)
CAUTION - Hot Surface
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WARRANTY AND CLAIMS
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We warrant that any equipment of our own manufacture or manufactured for us pursuant to our spe tions which shall not be, at the time of shipment thereof by or for us, free from defects in material or manship under normal use and service will be repaired or replaced (at our option) by us free of ch provided that written notice of such defect is received by us within twelve (12) months from date of ment of portable analyzers or within eighteen (18) months from date of shipment or twelve (12) mo from date of installation of permanent equipment, whichever period is shorter. All equipment requ repair or replacement under the warranty shall be returned to us at our factory, or at such other locat we may designate, transportation prepaid. Such returned equipment shall be examined by us and found to be defective as a result of defective materials or workmanship, it shall be repaired or replac aforesaid. Our obligation does not include the cost of furnishing any labor in connection with the in tion of such repaired or replaced equipment or parts thereof, nor does it include the responsibility or c transportation. In addition, instead of repairing or replacing the equipment returned to us as aforesa may, at our option, take back the defective equipment, and refund in full settlement the purchase thereof paid by Buyer.
Process photometric analyzers, process moisture analyzers, and sampling systems are warranted to form the intended measurement, only in the event that the customer has supplied, and AMETEK h cepted, valid sample stream composition data, process conditions, and electrical area classification pr order acknowledgment. The photometric light sources are warranted for ninety (90) days from d shipment. Resale items warranty is limited to the transferable portion of the original equip manufacturer’s warranty to AMETEK. If you are returning equipment from outside the United Sta statement should appear on the documentation accompanying the equipment being returned decl that the goods being returned for repair are American the name of the firm who purchase You're Reading agoods, Preview goods, and the shipment date. Unlock full access with a free trial.
The warranty shall not apply to any equipment (or part thereof) which has been tampered with or a after leaving our control or which has been replaced by anyone except us, or which has been subj Download With Free Trial misuse, neglect, abuse or improper use. Misuse or abuse of the equipment, or any part thereof, sh construed to include, but shall not be limited to, damage by negligence, accident, fire or force of th ments. Improper use or misapplications shall be construed to include improper or inadequate prote against shock, vibration, high or low temperature, overpressure, excess voltage and the like, or ope the equipment with or in a corrosive, explosive or combustible medium, unless the equipment is speci designed for such service, or exposure to any other service or environment of greater severity than th which the equipment was designed. Sign up to vote on this title
nor extendto anyone other than the The warranty does not apply to used or secondhand equipment nal purchaser from us. Useful
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OVERVIEW
Chandler Model 388 Ranarex Gravitometer Description
Chandler Ranarex Gravitometers measure the specific gravity of gases compared to air. For many industrial process gases there is a definite connection between the analysis of the gas mixture and its specific When the specific gravity is involved in the analysis of the total mixtu or when the instruments are used with orifice metering in gas volume they are graduated in specific gravity. When the gravimetric principle be applied, Ranarex gravitometers excel over more complex and costl analyzers in total performance. You're Reading a Preview Unlock full access with a free trial.
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Theory of Operation
The Ranarex principle and design are simple. The chassis of the gravitometer forms two cylindrical, gas-tight measuring chambers; ea has a separate inlet and outlet connection. In each chamber there is an impeller and an impulse wheel, both with axial vanes. These wheels a mounted on separate shafts. An electric motor and drive belt rotate th impellers at the same speed and in the same direction. The impellers d a continuous flow of air into their respective chambers. They spin the and air against the vanes of the corresponding impulse wheels. As the spinning gas and air impinge against the vanes, they create torques on impulse wheels that are proportional to the density of the gas and of air.
These torques are transmitted from the chambers to two external mea ing wheels. A flexible tape is wrapped on the measuring wheel rims i the crossed direction so that the torque creates two opposing forces. measuring wheels are restrained from continuous rotation, but a diffe ence between the torques allows limited motion of the entire system. measuring system divides the torque of the gas by the torque of the ai This is the same ratio as the density of the gas divided by the density o the air which is —the specific gravity. You're Reading a Preview The rim of the gas measuring wheel is contoured so that it rotates thro Unlock full access with ain free trial. gravity. The uniform motion equal angles for equal changes specific the gas measuring wheel is transmitted by a link to the readout eleme Download With Free Trial these can be either an indicator, a recorder, an electronic transmitter high/low contacts. To ensure accuracy, the gas sample and the referen air must be measured at ambient temperature, at barometric pressure at equal humidity content (either humidified or dry). to vote on this title Zero Position - ReferenceSign AirupOnly
Measuring Wheel
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Fa
Reference Wheel Fa
READING POSITION
Figure 1-1b. Reading position, unknown gas.
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Reading Position - Unknown Gas and Reference Air
Measuring Wheel
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R a T a
Figure 1-1b shows the position of the cam and refe ence wheel when an unknown gas is admitted to th upper chamber, and reference air is admitted into t lower chamber. The lighter gas (in the upper cham creates a smaller torque than the air in the lower ch ber. As a result, the cam will rotate until the cam ra allows the opposing torques to balance. The cam rotation is calibrated to indicate the ratio of the torq or relative density.
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Measuring Relative Density
The Ranarex Gravitometer measures relative density in accordance w the definition: “The ratio of the density of the gas, under observed con tions of pressure and temperature, to the density of dry air at the sam pressure and temperature.”
To measure relative densities above 1.000, the unknown gas is admitte the lower chamber and the dry reference air is admitted to the upper chamber. The principle of operation is the same. The graduated dial h two scales. The inner scale is used for relative densities below 1.000 an the outer scale is used for relative densities above 1.000.
Because of the nature of the gravitometer design, pressures and temp tures of the gas and reference air are equalized. Any changes in pressu temperature, and motor speed affect both torques equally. Since the torques produce opposing forces, the effects of varying pressure, tem ture and motor speed are cancelled. Selector Valve
The gravitometer is equipped with a selector valve that is used to dire You're Reading a Preview the sample gas and dry reference air to the correct chambers. The thre valve positions are full used for:with a free trial. Unlock access • • •
checking the instrument ZERO, Download With Free Trial measuring gas relative densities below 1.000 measuring gas relative densities above 1.000.
Motor
When The motor is designed for operation on 115 VAC ± 10%, 60 Hz. Sign up to vote on this title gravitometer is used in an area where AC power is not available, a DC Useful Not useful inverter can be used to convert the DC voltage supplied by an automo alternator or other DC source to the correct AC voltage.
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Options A variety of options is available for use with the Model 388 Ranarex Gravitometer. They include:
Stationary Model • • • • • • • • • • •
Class I, Group B&D, Div 1 atmospheres Battery-powered & spring-wound chart drives; 31-day chart speed High/low alarm contacts Analog output, 4-20 mA Ambient air reference humidifier for wet gas applications Ambient air reference dryer to dry gas applications Flowmeter for sample and reference gas Sample and reference gas regulators Gas filters Shutoff valves NEMA 4X, painted carbon steel cubicle with gravitometer and acc sories completely assembled, piped, wired, and tested. Options av able for the cubicle include: cabinet heater, speed loop, 24 VDC po supply for accessories, gas disposal pump, and stainless steel cubic You're Reading a Preview
Portable Model
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Power inverter: 12 VDC to 115 VAC or 230 VAC SelectableDownload AC power,With 115/230 FreeVAC Trial Alodyne treatment for sour gas applications
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Technical Support
AMETEK is committed to providing you with the best technical suppo the industry. If you need service or application assistance, please call 250-7200, or call your local AMETEK/Chandler representative.
If you need to return equipment, you will be asked to provide the foll ing information before obtaining a Return Material Authorization (RM number. •
Billing and shipping address
•
Model number
•
Serial number
•
Purchase order number
•
Telephone number
NOTE
Before returning material, you must get an RMA number from t You're Reading a Preview factory. Unlock full access with a free trial.
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SPECIFICATIONS
Stationary Model Accuracy: ± 0.5% of actual value Readings: Indicating only, or Indicating and Recording You're Reading a Preview Drive Motor: Unlock full access with a free trial.
115/230 VAC, 50/60 Hz, General Purpose Download With Free Trial
Chart Drive: 115/230 VAC, 50/60 Hz, General Purpose Recording Chart: 12-inch
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Specific Gravity Range: 0.07 to 2.5 in several ranges. Contact factory. Other Ranges: 0 to 100% CO2 and H2 in several ranges. Contact factory.
Ship Weight: 95 lb (43 kg) Case: Wall or flush-panel mounting.
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± 0.5% of actual value Readings: Indicating only Drive Motor: 115 VAC, 60 Hz or 230 VAC, 50 Hz Sample Flow Rate: 10-15 Scf/hour Sample Pressure: You're Reading a Preview 20 PSIG maximum
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Specific Gravity Range: Download With Free Trial Dual Scale: 0.52 to 1.03 and 0.97 to 1.90 Ambient Air Reference Dryer: Silica gel
Ship Weight:
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INSTALLATION
This chapter shows you how to install the Model 388 Ranarex Gravito eter. It includes the following: •
Inspect Shipping Contents
•
Mechanical Installation
•
-
Location/Environment
-
Inverter Installation (portable model)
-
Conditioning of Gas and Air Samples
-
Pressure Requirements You're Reading a Preview
-
Temperature Unlock fullRequirements access with a free trial.
-
Moisture Content Download With Free Trial
-
Filtering
-
Sample Connection
Setting Up -
Preparing the Dryer
-
Outlet Hoses
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Inspect Shipping Contents
The Model 388 and its accessories were tested and inspected before th analyzer was shipped from the factory. Carefully uncrate the analyzer remove any packing material and check for damage. If any damage is found, notify AMETEK as soon as possible and notify the shipper. Listed below are accessories included in the shipment. (1) (1) (1) (1)
Electric cord (6 feet), 18-gauge cable with male and female plugs. 1-1/4 lb can indicating silica gel Filling funnel Instruction manual
When the Ranarex gravitometer is operated using a 12-Volt DC batter the following are also furnished, unless excluded by the customer:
(1) Ranarex inverter (2) Battery cables (16 feet) 12-gauge wire with battery clips (1) Inverter Instruction Manual - found in the Appendix section of th manual. You're Reading a Preview Unlock full access with a free trial.
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Mechanical Installation Location and Environment
The Model 388 Ranarex Gravitometer should not be near hot or cold objects. You must allow at least 5 inches of clearance on the left side a inches on the right side for making connections and for normal opera functions. Permanent Mounting
If the instrument will be permanently mounted, it must be secured w (4) 1/4-20 machine screws (not provided). The screws mount through holes in the gravitometer base. See Figure 3-1 for mounting dimension and the location of the mounting holes.
10 3/4
You're Reading a Preview 16 3/4 13 Unlock full access with a free trial. 2 1/8
1 3/4 Download With Free Trial
13 5/8
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Electrical Installation
See Figure 3-2 for the location of connections and external contro
NOTE
Install the Power Inverter
Instructions for installation of the power inverter are in the Appendix this manual.
Instruction Plate
Ligh Outl
Air Dryer
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Zero A
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Heavy Outlet
Selector Valve Sign up to vote on this title
Gas Sample
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Conditioning the Gas and Air Samples
The gas sample and the reference air must be measured at the same temperature, atmospheric pressure and humidity content to ensure accuracy. The sampling system must condition the gas and air to mee these requirements. Once these conditions are met, the analyzer and sampling system as a unit will be self-compensating for all variations except the analysis and relative density of the gas.
Dry Reference Air The dry reference air is provided by the gravitometer’s built-in dryer which uses silica gel as the desiccant.
NOTE
The silica gel desiccant is normally blue in color and must be rep when the color has changed to pink.
Pressure
You're Reading a Preview The gas sampling system must reduce the gas to barometric pressure equal; the pressure of the reference air. The correct gas pressure cor Unlock full access with a free trial. sponds to a sample flow rate of 15-20 scfh for the stationary Model 388 and 10-15 scfh for the portable version. The flow rate is measured by a With Free Trial the flow scale is graduated in rotameter. As Download an operating convenience, relative density units so that you can adjust the needle valve so the flo meter reads the approximate relative density of the gas.
NOTE
The flowmeter can be used with inlet pressures up to 20 PSIG. W the sample pressure is greater PSIG, you must reduce to Signthan up to20 vote on this title using an external pressure Useful Not useful regulator.
Temperature
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Moisture Content
Gases that are “wet” (dew point above 50°F, 10°C), gases that are disso by a humidifier, e.g., NH3, or gases that are corrosive when moist, e.g. SO2, must be measured against dry air. You can use dry instrument ai that has been reduced to barometric pressure as reference air. If instru ment air is not available, ambient air can be dried using the gravitome equipped with an integral air dryer. This must be specified at the time instrument is ordered. Filtering
Use a commercial filter (25 microns) ahead of the regulator and flowm to protect the instrument. Other precautions may be required to prev liquids from entering the instrument. A Balston filter or equivalent ma necessary.
NOTE
The Ranarex Gravitometer does not include the gas filter, pressu reducing regulator, or sample hose.
You're Reading a Preview Sampling Systems
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Components for conditioning the gas and reference air should be pur Download Free Trial to ensure cor rect selection. Ho chased with the RanarexWith Gravitometer ever, they can also be user-provided.
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Setting Up the System
!
Do not operate the gravitometer without first reading the Operat Instructions.
CAUTION
Preparing the Dryer
The air dryer must be removed from its position in the upper left-han side of the gravitometer in order to fill it with silica gel. 1.
Loosen the two fasteners that hold the dryer in place.
2.
Pull out the plastic dryer assembly from the instrument far enoug that the rubber tube can be removed from the elbow at the rear of dryer.
3.
Remove the rubber plug on the front of the dryer by lifting the lev (do not turn the lever) at the center of the plug.
4.
Holding the dryer horizontally with the front face up, use the f Preview provided You're to pourReading silica gela into the spout. Unlock full access with a free trial.
5.
Tap or shake the dryer vigorously and continue to fill the dryer base of the spout. Download With Free Trial 6. Replace the rubber plug, attach the rubber tube on the elbow at t rear of the dryer, and replace the dryer in the gravitometer.
NOTE
If the dryer assembly is damaged, the entire assembly must be re placed. Sign up to vote on this title
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The moisture capacity of the silica gel varies according to the atmosph
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Attaching the Outlet Hoses
When the gravitometer is being operated in a confined space, such as inside a vehicle, the gas sample must be discharged outside the vehicl prevent contaminating the operating space with noxious or hazardo and air mixtures. •
•
If you are only measuring gas below 1.000 relative density, attach hose to the port labeled LIGHT GAS OUTLET (Figure 3-2) on upper right side of the gravitometer case.
If you are measuring gases above 1.000 relative density, attach a h to the port labeled HEAVY GAS OUTLET (Figure 3-2).
These hoses must remain attached when checking the instrument “zero point.”
NOTE
Gas Filter
If the gas contains suspended particles larger than 25 microns, or if th You'reuse Reading is “wet,” you must a filter.aIfPreview a commercial filter is not available, a suitable moisture trap can be made as follows: Unlock full access with a free trial.
•
•
•
Vertically mount a piece of pipe that is 1-inch diameter (2.54 cm) a With Free Trial 15 inches Download (38 cm) long. Cap both ends of the pipe. Install a drain valve in the bottom cap.
Install an inlet connection from the gas line 2 inches (5 cm) from th bottom of the pipe. Sign up to vote on this title
•
Not useful Place the outlet to the gravitometer 2 inches cm) from the top o Useful (5 pipe.
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Gas Temperature
If the gas sample is at a pressure above 100 PSIG, or if the sample flow through a temperature zone with a difference of 10°F (-12°C) from the ambient temperature of the gravitometer, you will need to adjust the sample temperature. Adjusting Sample Temperature
Install a section of 3/8” (1 cm) metal tube that is 10 feet (3 meters) long locate it near the gravitometer case. The tube can be coiled or bent to s the space available. The tube serves as a heat exchanger to heat or coo sample gas.
Sample Gas Connections
Attach a pressure reducing regulator to the sample tap and then route sample line to the gravitometer. The sample line must be capable of delivering 12 schf gas, free of condensed liquids, at a pressure not exc ing 15 PSIG.
NOTE
You're a Preview Use properReading sample probes and sampling techniques as defined in ASTM, andwith APIa free standards. Unlock GPA, full access trial. Download With Free Trial
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OPERATION
Pointer Lock
! CAUTION
The Ranarex Gravitometer has a Pointer Lock that must be kept l at all times when the motor is not operating.
The lock exerts tension on the flexible tape that connects the cam and reference wheel. This tension maintains correct “tracking” of the tape when the motor is stopped. Keep the lock engaged when the motor is in use but unlock it when you start the gravitometer Once operating the gravitometer, you can engage the Pointer lockReading again right before you shut off the motor to avoi You're a Preview operating inconvenience and to prevent damage to t Unlock full access with a free trial. gravitometer.
The LOCK of the pointer is at the upper righ Download Withposition Free Trial corner of the scale, near the 0.970 - 1.030 gradations. T position of the locking mechanism is shown by the a of the knob and the legends on the gravitometer fron cover.
Pointer Lock Knob RANAREX
To check if the Pointer is locked, turn the Sign upknob to votetoonUNLOCK this title and see if pointer drifts downward. Turn the knob to the position and se Useful Not useful LOCK the pointer snaps into its original position.
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Procedure
NOTE
The correct procedure for operating the Ranarex Gravitometer ca also be found on the instruction plate over the center of the indica scale on the instrument. Make sure to follow the sequence of step listed to ensure accuracy.
Instructions for Operation Before starting ensure that: 1. Pointer and Pointer Lock Knob are in the LOCK position. 2. The gravitometer Selector Valve is in the “0” (zero) position. 3. The silica gel in the dryer is in active condition (blue). 4. The gas vent hose is connected and exhausted to a safe area.
Start 1. Gravitometer with inverter Connect the Ranarex Gravitometer cord to the Inverter Outlet an turn the switch to ON. You're Reading a Preview Gravitometer without inverter Connect the Ranarex Gravitometer Unlock full access with a free trial.cord to the correct current. 2. Wait 5 seconds. Turn Pointer Lock Kno b to UNLOCK . Watch as th Pointer moves toward 1.000 reading. Download With Free Trial 3. Connect the regulator delivery to 15 PSIG maximum.
Reading the Gas 1. Ensure that the Pointer reads 1.000 on air. If not, reset with the Adjust screw. Sign up to vote on this title 2. For gas below 1.000, turn the Selector Valve to LG. Useful Not useful For gas above 1.000, turn the Selector Valve to HG. 3. Connect the gas hose to the Flowmeter Inlet . Adjust the flow valv
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Helpful Tips Zero Adjustment
The Zero Adjustment screw must be turned in the direction opposite the correction required in the Pointer reading. For example, if the Poi needs to move clockwise to 1.000 on the scale, turn the Zero Adjustme screw counterclockwise. After making adjustments, allow the Pointer stabilize.
NOTE
! CAUTION
During normal operation, the Zero Adjustment screw requires l than 1/4 turn to set the Pointer to 1.000. If more than 1/2 turn i required, stop the motor and investigate the cause.
Never turn the Zero Adjustment screw to the limit of the adjust ments, clockwise or counterclockwise, with the motor ON .
ResponseYou're TimeReading a Preview Unlock full access with a free trial.
When measuring gas at the normal flow rate of 12 scfh, the response t to reach the final reading is 40-45 seconds. To reduce this time, you Download With Free Trial operate at a higher flow rate. This can be done by adjusting the Flowm ter Valve so that the float reads higher than the actual gas relative den
Over-Pressure Protection
Sign upthe to vote on thisValve title is turned If the Flowmeter Valve is opened before Selector ofNot LG or HG, the valve cover will lift off Useful the body theuseful instrument to relieve the pressure and will be reseated by the spring.
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CALIBRATION
Calibrating the Ranarex Gravitometer
There are three adjustments used to calibrate the Ranarex Gravitomet
Zero Adjust
This is the only adjustment required in normal operation. The Zero A screw operates the chain, sprockets, and lower impulse wheel bearing When operating on air., the impulse wheel bearing positions the lowe impulse wheel longitudinally in the lower chamber to match the torqu the upper chamber. Zero Adjust instructions can be found in Chapter this manual. You're Reading a Preview Unlock full access with a free trial. Sensitivity
Download With Free Trial impulse wheel in the upper ch The longitudinal position of the upper ber governs the sensitivity of the gravitometer. The sensitivity adjustm requires loosening the 7/8” hex lock nut behind the measuring wheel, turning the 1/2” hex head of the bearing in the correct direction, and t tightening the lock nut. Turn only one flat (1/6 turn) at a time and then retest. Sign up to vote on this title
Useful Not useful Too Sensitive If the pointer is too sensitive, the sensitivity can be reduced by movin upper impulse wheel closer to the front of the chamber. This is accom
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Span Adjustment
Sheet Music
The span of the gravitometer is governed by the angular position of th pointer on the measuring wheel.
To allow adjustment, the pointer is attached to the measuring wheel b two screws that pass through circular slots in the pointer hub. If span adjustment is necessary, the pointer is moved in relation to the measu wheel in the direction of the desired reading. For example:
If the pointer reads too high numerically on the red scale (too low on black scale), the pointer should be moved clockwise. Similarly, if the pointer reads too low numerically on the red scale (too high on the bl scale), the pointer should be moved counterclockwise.
Before making an adjustment, mark the position of the pointer hub on face of the cam and then loosen the screws just enough so that the po can be turned against slight friction of the washers under the screw h without allowing it to slip freely. Make adjustments in small incremen two or three small gradations on the red scale at a time. Retest.
You're Readingorathe Preview When either the sensitivity span adjustment is changed, you m reset the ZeroUnlock Adjust to 1.000 on air. full access with a free trial. Download With Free Trial
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Calibration Pulley
A calibration pulley is fastened inside of every new gravitometer. This pulley can be used instead of a certified gas to check the calibration of instrument. The pulley (P/N 315-03031) is intended to make the gravit eter read 0.640 theoretical relative density.
Because of the tolerance on the diameters of the pulleys, you must use following test procedure to determine the exact relative density (±.00 the pulley will produce.
Test Procedure for Calibration Pulley 1.
Ensure that there is new silica gel in the dryer and that the Select Valve is on zero. If necessary, turn the Zero Adjust until the pointe reads 1.000. Operate the gravitometer.
2.
Turn the power OFF. Remove the upper impeller pulley and meas its maximum diameter at the crown with a micrometer.
3.
Measure the maximum diameter of the calibration pulley at the cr using the micrometer. Install the calibration pulley on the upper You're Reading a Preview impeller shaft.
4.
Continue to operate the gravitometer without making any adjus ments. Observe and record the relative density reading. Download With Free Trial Divide the diameter of the standard upper impeller pulley by th diameter of the calibration pulley and square the answer, This val the correct relative density reading.
5.
Unlock full access with a free trial.
Example:
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Useful Not useful (3.762 Upper impeller pulley diameter = 1.481” cm)
Calibration pulley diameter
= 1.850” (4.699)
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Additional Calibration Pulley Sizes The table below lists the additional calibration pulley sizes available.
CALIBRATION PULLEY SIZES Part Number
Relative Density
Part Number
304-03031 305-03031 311-03031 316-03031
(.758 S.G.) (.715 S.G. (.733 S.G.) (.640 S.G.)
309-03031 320-03031 322-03031 324-03031
Relative Dens
(.576 S.G.) (.588 S.G.) (.840 S.G.) (.930 S.G.)
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SERVICING & TROUBLESHOOTING
Service and Maintenance Selector Valve
If the sample Selector Valve becomes contaminated, you must clean lubricate it. If this happens often, you should use a gas filter to preven contamination. Cleaning the Valve 1. 2. 3. 4.
Remove the screw at the center of the valve cover and withdraw t You're Reading a Preview screw, both washers, the spring and cover. Remove all of the old grease and other contaminants from the s Unlock full access with a free trial. and channels in the cover and valve body. Lubricate the faces of the cover and body with silicone-based gr Replace allDownload parts. With Free Trial
Polishing the Valve If the valve cover or valve body become scored, you will haveto lap/ Sign up vote on this title polish the mating surfaces to eliminate thetoscoring.
1.
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Clean both surfaces and then apply a fine valve grinding compou to them. Reassemble the valve.
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Pointer Lock
If the connecting tape becomes loosened from the cam or reference w while the gravitometer is in transit, you will need to adjust the Pointe Lock as follows. 1.
Remove the front cover and check to see if the sides of the U-ho the end of the lock spring are parallel with the inner face of the co
2.
Ensure that the set screw is fully tightened in the shaft of the lock knob. If necessary, turn the spring and tighten the screw.
3.
Remove the indicating scale and track the connecting tape on the and reference wheel. Set the pointer at approximately the 1.000 po tion.
4.
Holding the front cover in the correct position on the gravitom casing, turn the knob toward the LOCK position to check if the Uhook straddles the radial edge of the cam. If necessary, bend the spring in the correct direction at the knob shaft.
5.
Holding the front cover to the casing, turn the knob toward the L position to check to see if the spring takes up the slack in the conn You're the Reading Preview tion tape before loweraend of the spring snaps between the de pins of the cover. Unlock full access with a free trial.
If it does not work correctly as described, bend the upper section o Download Free Trial the cam edge or toward the le the lock spring, at theWith knob, toward when viewed from inside the cover. 6.
Hold the cover to the casing and check to see if the lower end o lock spring snaps between the detent pins and is retained there. If necessary, bend the lower end of the spring towards, or away from Sign up to vote on this title the front cover as required.
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Connecting Tape
Sheet Music
Tracking the Tape 1.
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Release the Point Lock and remove the front cover and indicating scale from the gravitometer. If the tape does not track on both the Measuring and Reference wheels, turn both wheels clockwise.
2.
Replace the tape onto each wheel and set the pointer to approximately 1
3.
Turn the Reference wheel to take up the slack in the tape.
NOTE
If the tape has fallen behind either wheel, extract it by rotating th wheel as necessary to avoid kinking the tape.
Cleaning the Tape
Use a tissue toYou're wipe Reading off any dust, fingerprints, or oil on the tape. At th a Preview same time, clean the rims of the cam and the Reference wheel. Unlock full access with a free trial.
! CAUTION
Do not use cleaning fluid or solvent. Download With Free Trial
Replacing the Tape 1.
the re Loosen the clip screws at the ends tapeonand remove Signof upthe to vote this title ing clips from the rims of the cam Useful Reference Not usefulwheel to rem and the the old tape.
Hook the new
he screw heads and install the cli
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Disassembling the Gravitometer
Observe the following sequence when disassembling the gravitomete
Front and Rear Cover •
•
Release the Pointer Lock and turn it to fully to the UNLOCK posit This sets the lock spring below the bottom of the scale plate. Loosen the 8 fasteners while holding the cover so that it does not on the scale and pointer.
NOTE
•
If the cover must be placed on a benchtop, ensure that the inside f facing up so to prevent damage to the locking spring.
To remove the rear cover, loosen the 8 fasteners.
Indicating Scale •
Set the pointer about 0.950. You'retoReading a Preview
•
Unlock full access Loosen the screws that with holda free the trial. scale by one turn.
•
Lift the scale so that the pass over the screw heads. Download Withkeyholes Free Trial
•
Move the scale downward while holding it in until the right side clears the pointer.
Front Chamber Cover •
•
Sign up to vote on this title
the rim of both chambers. Remove the eight screws around Useful
Not useful
Grasp the assembly by the scale posts and the zero adjust screw an
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Rear Chamber Cover
NOTE
•
•
•
Remove the front chamber cover before removing the rear chambe cover.
Remove the belt and unscrew both impellers from the front of the chamber. The impellers have right-hand threads. Remove the 10 screws around the rim of the chambers.
Grasp the assembly by the bearing housing and pull away from th body.
The assembly can now be set down on the right edge, steadied by the idler pulley. It may also be placed on the benchtop with both pulleys facing down.
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Impeller Bearing If the bearings do not turn freely, or they become noisy, replace the bearings (Part Number 187-17004).
Impeller Bearing Disassembly 1.
Remove the front chamber cover assembly, impellers, and rear ber cover assembly from the Operating Mechanism as previously described.
2.
Temporarily reinstall the front chamber cover assembly in the in ment to avoid damage while working on the bearings.
3.
Remove the nuts from the shaft without bending it.
4.
Remove the snap ring from the threaded end of the shaft.
5.
Gently tap on the end of the shafts to push the front ball bearing o of the housing. Use a small bearing puller to remove the bearing f the shaft.
6.
Gently push or tap on theathreaded You're Reading Preview end of the shaft to push the re bearing out of the housing. Use a small bearing puller to remove t Unlock full access with a free trial. bearing from the shaft. Download With Free Trial
Impeller Bearing Assembly 1.
Inspect and clean the interior of the impeller bearing casing and shaft.
2.
Insert the new bearing into the Sign threaded endonofthis the shaft and in up to vote title bearing casing. Useful Not useful - Install the bearing on the pulley end of the shaft. - Replace the nuts on the ends of the impeller shafts.
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Troubleshooting •
To ensure accuracy, the gravitometer must meet the following con tions:
•
There must be sufficient flow of gas sample and reference air.
•
The impellers must be rotating at the correct speed.
•
The pointer must move without friction.
•
The gravitometer must be free of internal leaks.
•
The air dryer must be filled with active silica gel.
•
The gravitometer must be properly calibrated.
Performance Checks
NOTE
Refer to the “Gravitometer Disassembly Procedure” earlier in thi chapter should you need to disassemble the gravitometer. You're Reading a Preview
Unlock full access withincorrectly, a free trial. perform the following tests If the gravitometer is reading in the sequence they are listed. Download With Free Trial
Check air and gas flow 1
2
Disconnect all inlet and outlet hoses, set the selector valve to zero purge the gravitometer. Sign up to vote on this title
Verify that there is flow at the discharge ports. Useful Not useful
-
If there is no obvious evidence of flow, disconnect the hose fro the rear of the air dryer and retest.
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Remove the rear chamber cover and check the passages that extend from the impeller bearing location to the elbows near t bottom of the chamber cover. Check the outlet tubes and nipp for both chambers. Impeller speed check
The correct impeller speed is approximately 2800 rpm as measured w strobe tachometer. If a tachometer is not available, remove the drive b and verify that the motor pulley, impeller pulleys, and the idler pulley turn freely. •
•
•
If the impeller pulleys do not turn freely, install new bearings (Pa #187-17004), or replace the assembly (See Figure 6-1 Impeller Bear Assembly.)
If the idler pulley does not turn freely, it must be replaced (Part #3 02658). If the motor pulley does not turn freely, it must be replaced (Part #300-00256).
You're Reading a Preview Frictionless indicator response
Unlock full access with a free trial.
1.
Remove the front cover and connect the gravitometer to a gas s Download Record the reading. With Free Trial
2.
Gently move the indicator to each side of the true reading and re The indicator should return to the same reading from each directi within .001 relative density within 15 seconds.
3.
Sign to vote on this title If the indicator does not point to theupsame reading, clean and/or replace the impulse wheel shafts bearings. Useful and Not useful
-
Remove the front chamber cover of the operating mechanis
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-
Tag the impulse wheels to indicate the chamber from which t were removed.
-
Polish the shafts with crocus cloth or fine steel wool. Do not b the shafts.
If the impulse wheel shafts show a bright groove where they rotate in jeweled bearings, or if the hubs of the cam and the reference wheel sh a groove where they have been drawn down against the ends of the impulse wheel, replace the shafts. -
Use clean air to gently blow out the impulse wheel bearings drop of instrument oil to both ends of each bearing.
-
Replace the shafts with wheels in their bearings in the correct chamber and turn them slowly.
If the protruding portion of the shaft wobbles or if the wheel d not turn freely, replace the shaft with a new one. A bent impu wheel shaft will cause the gravitometer to lose accuracy and sensitivity. -
NOTE
-
Attach the measuring and reference wheels to the impulse wh Reading a Preview shaftsYou're making sure that the set screws bear on the flats of the shafts.Unlock full access with a free trial. A small amount of shaft .005” to 0.010” (.13 - .25mm Download With Freeend-play, Trial maximum must exist to prevent binding.
Verify that no parts of the indicating mechanism have been be and that there is no binding between parts. Sign up to vote on this title
Check for internal leaks
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-
To determine where the leak is located, stop the motor, remo front and rear covers and disconnect the hose from the inlet p of the selector valve.
-
Individually pressurize (approximately 10 PSIG) the upper an lower chambers with gas and use a gas leak detector to find th leak. The leak may be caused by loose screws or a gasket that i damaged.
-
Verify that the Tygon tubes are not cracked or damaged. Th tubes join the internal connector to the selector valve and to th elbows near the bottom of the rear chamber cover.
Check the indicator balance
The measuring mechanism is statically balanced by the manufacturer does not change with wear or age. The balancing weights behind the should not be disturbed. However, if required, the balance can be veri and restored as described. 1.
Stop the motor and remove the front cover.
2.
a Preview Place the You're pointerReading first at the right side of the scale, then the bottom and then the left side of the scale. At each position, tap the front o Unlock full access with a free trial. gravitometer case to overcome static friction. The pointer should remain stationary or very nearly so. Download With Free Trial If the pointer drifts more than two small gradations on the red sca make adjustments to the balancing weights on the threaded rods compensate for the difference.
NOTE
When loosening or retightening Sign upthe to balancing vote on thisweight, title use care th the threaded rods, pointer, and impulse wheel shaft are not bent o Useful Not useful damaged.
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Check the silica gel in the dryer
If the silica gel is pink in color, it is exhausted and must be replaced. Remove and empty the air dryer. Refill the dryer with new silica gel a reinstall. Gravitometer calibration
The gravitometer was accurately calibrated by the factory and the cali tion does not change appreciably with wear or age. The adjustments should not be changed without first checking every other possible sou of error. Calibration should proceed only if all other sources of error h been eliminated.
NOTE
Sometimes during calibration, repeatability problems may occur to static friction. Gently tap the side of the gravitometer case to eliminate the static friction.
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REPLACEMENT PARTS KEY #
PART #
DESCRIPTION
1001
56-02253
Case
1002
300-00002
Front Cover Assembly
1003
357-02254
Rear Cover
1004
329-02044
Scale
1005
302-02145
Nameplate (State Serial Number)
1006
302-02080
Pointer Lock Knob
1007
188-11914
Fastener, Front Door
1008
187-20145
Retainer
1009
302-02267
Strap
1010
187-20145
Retainer You're Reading a Preview
1011
300-00046
Gas Flowmeter Unlock full access with a free trial.
1012
188-11923
Screw, 8-32 x 3/8", Pan Hd, SS
1013
302-02573
GasDownload Hose With Free Trial
1014
300-00018
Seletor Valve
1015
300-00259
Silica Gel (1 Required for Refill)
1016
300-00017
Dryer Box Assembly Gasket
Sign up to vote on this title
1017
302-02294
1018
302-02265
Dryer Closure with Strap
1019
188-12573
Dryer Fastener
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KEY #
PART #
1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077
H-6009 357-01956 357-01955 302-02040 302-02208 302-02075 188-11706 188-11500 187-12161 302-02001 187-00795 302-28613 302-20613 300-00007 302-02074 188-06992 302-02160 188-12265 300-00005 187-0006 187-15197 C11249 302-01958 302-02042 302-02194 302-02139
1078 1079 1080 1081
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DESCRIPTION
Screw, BDG, 6-32 x .25, PH, SST Window Gasket Window Glass Cam Pointer Tape Clip Screw, 2-56 x 1/4", Nylok, Phillip Head, Steel Screw, 4-40 x 1/2", Fil Hsd, SS Belleville Washer, #4, SS Cam Hub Small Balancing Nut Large Balancing Nut Balance Weight Cam and Pointer Assembly You're Reading a Preview Balance Wheel Stop Unlock1/4-20 full access with aRd free Hd, trial. Br Ni PL Screw, x 1/4", Dust Sleeve
Free Set Download Screw, 6-32With x 1/2", HexTrial Socket Hd, Half Dog Pt, SS
Balance Wheel Assembly Electrical Receptacle (below S/N P-5840) Electrical Receptacle (above S/N P-5839) Electrical Receptacle (for 230 VAC instruments) Cover Gasket Sign up to vote on this title Connecting Tape Useful Not useful Pointer Stop Scale Stud
2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
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KEY #
PART #
1109 1110 1111
188-01857 188-01224 302-02086 303-02298 188-11076 188-11928 356-03253 188-04574 302-02255 302-01970 P-1562 302-01969
1112 1113 1114 1115 1116 1117 1118 1119
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DESCRIPTION
Screw, 8-32 x 1/2", Fil Hd, SS #8 SS Lockwasher Motor Pulley, 60 Hz Motor Pulley, 50 Hz Set Screw, 10-32 x 5/16" Socket Hd, Cup, Pt, SS Dowel Pin, 1/4" x 1 1/4", SS Base Plate Screw, 5/16-18 x 1-1/4", Fil Hd, St Cad PL Elbow Air Outlet Nipple Rubber Grommet Gas Outlet Nipple
4 4 4 4 4 4 4 4 4 4 4
OPERATING MECHANISM
1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160
300-00003 356-02057 302-01880 187-07566 188-11928 302-02151 302-01920 303-01919 302-01930 188-07305 302-01929
Operating Mechanism Assy (also order (2) #1116) You're Reading a Preview Front Chamber Cover UnlockWheel full access with a free trial. Impulse Set Screw, 6-32 x 3/16" Hex Socket Half Dog, Pt, SS Download With Free Trial Dowel Pin, 1/4" dia x 1-1/4" Impulse Wheel Bearing Locknut
Upper Impulse Wheel Bearing Upper Impulse Wheel Shaft Collar Sign up to vote on this title Useful useful Set Screw, 10-32 x 3/16", Socket, Cup pt, St Hex Not Spacer
5 5 5 5 5 5 5 5 5 5 5
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KEY #
PART #
DESCRIPTION
1169
188-12262
1170 1171 1172 1173 1210 1211 1212 1213 1214 1215 1240 1242 1243 1244 1245 1246 1247 1248 1249 1250
188-00590 188-14708 188-14707 188-14706 356-02056 329-02218 329-02126 302-01881 302-01882 187-11074 356-02060 188-04577 188-11928 302-01883 300-00258 187-17004 302-01889 302-03307 302-01891 188-11076
Lower Impulse Wheel Bearing O-Ring, 1/4" ID x 1/16"W Neoprene Screw, 5/16-18 x 1", Fil Hd St, Cad, PL Spacer Ring Grip Ring Retaining Ring Chamber Body Front Chamber Gasket Rear Chamber Gasket Impeller Inlet Plate Inlet Plate O-Ring, 4-3/4" ID x 3/32" W, Neoprene Rear Chamber Cover a Preview You're Reading Screw, 5/16-18 x 1-1/2", Fil Hd, St Cad PL, SS Unlock full access with a free trial. Dowel Pin, 1/4" dia x 1-1/4" St Auxiliary ImpellerWith Free Trial Download Impeller Bearing Assy Impeller Ball Bearing Impeller Shaft Impeller Bearing Casing Sign up to vote on this title Impeller Pulley Useful Not useful Set Screw, 10-32 x 5/16", Hex Socket Cup Pt, St
5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
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PART #
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DESCRIPTION ACCESSORIES
302-01295 302-03021 187-00029 300-00259 C07541 187-16134 187-15033 187-14588 302-20613 302-28613
Cordset (below S/N P-5840) Cordset (above S/N P-5839) Funnel Silica Gel (1 required for refill) Inverter Replacement Tube and Float for Flowmeter Transformer, Stepdown, 230-115 VAC Portable Power Supply Balance Weight Long Nut
5 5 1
CALIBRATION PULLEYS
307-03031 308-03031 312-03031 314-03031 316-03031 319-03031 321-03031 323-03031 325-03031
Calibration Pulley (.758 S.G.) You're Reading a Preview Calibration Pulley (.715 S.G.) Unlock full access with a free trial. Calibration Pulley (.733 S.G.) Calibration PulleyWith (.666Free S.G.) Download Trial Calibration Pulley (.640 S.G.) Calibration Pulley (.576 S.G.) Calibration Pulley (.588 S.G.) Calibration Pulley (.840 S.G.) Sign up to vote on this title Calibration Pulley (.930 S.G.) Useful Not useful
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Figure 6-1. Portable Gas Gravitometer.
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Figure 6-3. Gravitometer, front view, cover removed.
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Figure 6-5. Gravitometer, operating mechanism assembly.
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DRAWINGS 187-11061
188-16720
302-03307
187-19920
(2) 187-
302
(2) 187-12262
(2) 188-1
(2) 187-17004
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Figure 6-1. Impeller bearing assembly.
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Assembly Procedure Sign up to vote on this title
1.
Inspect and ensure that the bearings (187-17004) have two seals Useful Not useful assembling the unit.
2.
Install the inner retaining (187-11061) in the casing (302-03307).
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5.
Install the retaining ring (187-19920) in front of the bearing with convex side facing the bearing.
6.
Install the remaining bearing (187-17004) to the shaft in the oppos end of the casing. Install a nut on the opposite end of the housing snug it up against the bearing.
7.
Ensure that the shaft rotates freely after assembling the two nuts.
8.
Install and tighten remaining jam nut into position per Figure 6-
9.
Recheck the shaft rotation to ensure that it rotates freely.
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(2) 302-20613
(2) 302-02008 Fasten securely in place with Loctite sealant Grade AA or A
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187-00795 302-28613 302-02001
187-07566
302-02040
(2) 187-12161 (2) 188-11500
302-02208
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97°
302-02075
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+0°
100°-5°
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Connect Ground Leads under Screws (2) 187-01246 R-0879 (2 FT) R-0879 (6 FT) Cut End
187-15199
BLK GND WHT
DYMO Tape: "Plug into 230 VAC"
187-15199
X1
H1
X2 X3
H2 H3
X4
H4
WIRING DIAGRAM
DYMO Tape: "Connect to Ranarex"
Figure 6-3. 302-03025 - Stepdown transformer with cables.
187-15200
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Download With Free Trial Figure 6-4. 302-03021 - Cordset, 3 conductor, 115V.
Cut and strip conductors of 187-15200 so that jacket of cord will be fully inside of cord grip when conductors are properly connected inside 187-15199
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INVERTER
General Information
These inverters are designed primarily for operating the Ranarex Mod 388 Portable Gravitometer. They are durable, transistorized units with moving parts. Part #
300-27404 300-28656
Description
DC Input at battery posts
12 VDC/115 VAC, 500W 12 VDC/220 VAC, 1000W
12.0 - 14.2 VDC 12.0 - 14.2 VDC
AC Outp
110-125 VAC, 59-6 220-230 VAC, 50
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! CAUTION
DoUnlock not misuse thewith inverter. Appreciable or extended overload wil full access a free trial. cause permanent damage. Download With Free Trial
Damaging the Inverter
Operating under the following conditions will result in permanent da Sign up to vote on this title age to the inverter transistor:
•
with reversed DC polarity
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Installing the Inverter Check Vehicle Polarity Negative-Grounded System
When the inverter is used in a vehicle with a negative-grounded ignition system, the chassis of the inverter can be safely grounded the vehicle body. Positive-Grounded System
If the vehicle has a positive-grounded system, the inverter must be insulated from the vehicle.
Choosing a Location To install the inverter, select a secure location where you can easily the power switch to operate the inverter. •
Do not mount the unit in a location where the inverter heat sinks be blocked. Allow space of at least one inch on both sides and on You're Reading a Preview top of the unit. Unlock full access with a free trial.
•
•
Do not mount the unit under the engine hood or close to hot obje Download With Free Trial Do not mount the unit or its connections in a location where it can damaged when you are operating other equipment or handling to
NOTE
Make sure that the inverter is covered if you must operate it whe raining. Sign up to vote on this title
Cable Installation
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Temporary Installation
If you might need to make any modifications to the cable, or if any the other conditions listed below are present, string the cables tem rarily so that you are able to make any required modifications.
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• • •
vehicle engine is stopped vehicle engine is idling but voltage regulator is set above 14. exceptionally short or long cables are needed
Inverter Connections 1
Verify that the On-Off toggle switch on the inverter is in the OFF position.
2.
Make the connections from the gravitometer to the inverter bindi posts first.
3.
Make the connections from the inverter to the battery posts or ca clamps after you have already made the connection from the grav meter to the inverter binding posts.
4.
Observe the correct polarity. You're Reading a Preview
! CAUTION
DoUnlock not connect thewith cable to trial. the terminals of the generator, alterna full access a free voltage regulator, starter relay or any other similar device. Download With Free Trial
Connection Polarity
! CAUTION
Do not reverse polarity as the transistors will be damaged and th Sign up to vote on this title warranty will be suspended.
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Connect the other end of the BLACK LEAD to the Negative (N) o battery terminal using the clip.
These connections apply to both negative- and positive-grounded vehicles.
NOTE
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Inverter Operation 1.
Check the starting procedure for the operation of the gravitomete
2.
Insert the plugs from the gravitometer cordset into the receptacle the inverter.
! CAUTION
3.
Do not operate the inverter without the gravitometer connected as a Do not connect a source of AC power to the output of the inverte
Turn the inverter On-Off switch to the ON position. The inverter start.
Stopping the Inverter 1.
Follow the procedure for purging the gravitometer.
2.
Turn the On-Off switch of the inverter to the OFF position.
3.
Disconnect the inverter from the battery. You're Reading a Preview Disconnect the inverter from the gravitometer.
4.
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Regulating the Inverter Voltage Download With Free Trial Voltage too low
If, after operating the gravitometer you find that the battery voltage is volta low, check to see if the voltage regulator be reset a higher Sign upcan to vote on thistotitle within the vehicle manufacturer’s tolerance. If it is impractical to reset Useful Not useful voltage regulator, you can substitute either 8- or 10-gauge cables for standard 12-gauge cables provided.
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Operating Other Equipment
This inverter is designed and conservatively rated to operate the grav meter. Use for other purposes is at the operator’s risk and if the invert damaged by overload, the manufacturer’s warranty is revoked. Use th following rules as guidance in operation of the inverter. •
Do not operate any device that consumes more than 250 watts.
•
Do not operate any device simultaneously with the gravitometer
•
Do not operate the inverter for more than two minutes without lo You should turn on the gravitometer before starting the inverter
Typical Loads #300-27404 12 VDC/115 VAC, 500W
Emergency Lighting 100 to 500 Watt lamp Soldering Iron 100/140 Watt dual heat Electric Drill 1/2” drills #300-28656 12 VDC/220 VAC, 1000W
You're Reading a Preview Emergency Lighting 100 to 250 Watt lamp Soldering Iron 100/140 Watt dual heat Unlock full access with a free trial. Electric Drill 1/2” drills Download With Free Trial
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Service Replacement/Additional Units If complete replacement is necessary, or if additional inverters are required, order from: Chandler Engineering 2001 N. Indianwood Avenue Broken Arrow, OK 74012 (918) 250-7200 Part # 300-27404 - Inverter, 12 VDC/115 VAC, 60 Hz, 500W Part # 300-28656 - Inverter, 12 VDC/220 VAC, 50 (± .5 Hz), 1000W
Repairs
Repairs should be made by the manufacturer or an approved Tripp Li service shop: Tripp Lite Division of Tripp Manufacturing Co. You're Reading a Preview 500 North Orleans Unlock full access with a free trial. Chicago, IL 60610 (312) 329-1777 Download With Free Trial Request shipping instructions from Tripp Lite before returning for
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