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Omega FMA1800A, User Manual, Page: 1 / 36

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FMA1700A & FMA1800A

Mass Flow Meter

TM

e-mail: [email protected]

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User’s Guide

NORWALK, CT

Summary of Contents for FMA1800A

Page 1: ...FMA1700A FMA1800A Mass Flow Meter TM e mail info omega com For latest product manuals www omegamanual info Shop online at omega com User sGuide NORWALK CT...

Page 2: ...rves the right to alter specifications without notice Servicing North America U S A Omega Engineering Inc Headquarters Toll Free 1 800 826 6342 USA Canada only Customer Service 1 800 622 2378 USA Cana...

Page 3: ...eadings 5 3 Swamping Condition 6 MAINTENANCE 6 1 Introduction 6 2 Flow Path Cleaning 6 2 1 Restrictor Flow Element RFE 6 2 2 FMA1700A 1800A Series Max Flow 15 L min 7 CALIBRATION PROCEDURES 7 1 Flow C...

Page 4: ...Scaling 7 4 3 Change Decimal Point 8 TROUBLESHOOTING 8 1 Common Conditions 8 2 Troubleshooting Guide 8 3 Technical Assistance 9 CALIBRATION CONVERSIONS FROM REFERENCE GASES APPENDIX 1 COMPONENT DIAGR...

Page 5: ...ase contact an OMEGA7 customer service representative and request a Return Authorization Number AR It is mandatory that any equipment returned for servicing be purged and neutral ized of any dangerous...

Page 6: ...ording to the manufacturer s instructions to one and one quarter turns Avoid over tighten ing which will seriously damage the Restrictor Flow Elements RFE s Using a Helium Leak Detector or other equiv...

Page 7: ...PLY VOLTAGE LIMIT MAY RESULT IN DEVICE PERMANENT DAMAGE IMPORTANT NOTES In general D Connector numbering patterns are standardized There are how ever some connectors with nonconforming patterns and th...

Page 8: ...as the LCD readout mounting Special lengths of remote extension wiring up to 9 5 feet 3 meters are available on request 2 3 2 Panel Mounting Readouts Another option for the FMA1700A 1800A Mass Flow Me...

Page 9: ...to the total flow through the transducer In order to sense the flow in the sensor tube heat flux is introduced at two sec tions of the sensor tube by means of precision wound heater sensor coils Heat...

Page 10: ...rate for 25 to 100 of full scale flow rate GAS PRESSURE 1000 psig 69 bars FMA1700A 1800A Series Max Flow 15 50 and 100 500 psig 34 5 bars FMA1700A 1800A Series Max Flow 200 500 and 1000 L min Optimum...

Page 11: ...Series Max Flow 1000 L min 3 4 FNPT fittings or 3 4 compression fittings LCD DISPLAY 3 digit LCD maximum viewable digits 1999 0 5 inch high characters On FMA1700A 1800A aluminum or stainless steel mod...

Page 12: ...0 43 200 44 500 45 1000 TABLE I FMA1700A 1800A SERIES MAX FLOW 15 L min LOW FLOW MASS FLOW METER CODE mL min N2 02 0 to 10 04 0 to 20 06 0 to 50 08 0 to 100 10 0 to 200 12 0 to 500 CODE L min N2 14 0...

Page 13: ...see page or leak occurs in to the meter 5 2 Flow Signal Output Readings Initiate a controlled gas flow after warm up The flow signal output can be viewed either on the LCD display remote panel meter d...

Page 14: ...intenance required It is good practice however to keep the meter away from vibration hot or corrosive environments and excessive RF or magnetic interference If periodic calibrations are required they...

Page 15: ...S 50 L min 100 L min 200 L min 500 L min or 1000 L min DISASSEMBLY NECESSITATES RE CALIBRATION 7 CALIBRATION PROCEDURES NOTE REMOVAL OF THE FACTORY INSTALLED CALIBRATION SEALS AND OR ANY ADJUSTMENTS M...

Page 16: ...least four times better collective accuracy than that of the Mass Flow Meter to be calibrated be used Equipment required for calibration includes a flow calibration standard and a certified high sensi...

Page 17: ...ulated screwdriver adjust the ZERO potentiometer R34 through the access window for 0 VDC or 4 mA respectively at zero flow 13 CAUTION The minimum voltage on 0 5 Vdc output can be in the range of 7 to...

Page 18: ...arily disconnect the gas source Using the multimeter and the insulated screwdriver adjust the ZERO potentiometer R34 through the access window for 0 VDC or 4 mA respectively at zero flow CAUTION The m...

Page 19: ...e signal Adjust the setting for potentiometer R38 by using the insu lated screwdriver through the access window until reading is within specification 7 3 7 75 Flow Adjustment Using the flow regulator...

Page 20: ...ired flow and pressure conditions for a given gas or a mix ture of gases It was carefully packed to prevent damage during shipment Should you feel that the instrument is not functioning properly pleas...

Page 21: ...ect FMA1700A 1800A transducer from power supply remove the shorting condition or check polarities fuse resets automatically Flush clean or disassemble to remove impediments or replace Flush clean or o...

Page 22: ...ide of the LCD Display Power supply is bad or polarity is reversed PC board is defective REMEDY Readjust ZERO potentiometer R34 through the access hole see page 13 for details Measure voltage on pins...

Page 23: ...ns 2 and 3 of the D connector Make sure the load resistance is more than 1000 Ohm Return FMA1700A 1800A to factory for repair Check external connections to pins 8 and 9 of the D connector Make sure th...

Page 24: ...11 NOTE Calibration accuracy can be affected Return FMA1700A 1800A to factory for repair Flush clean or disassemble to remove impediments or replace the filter screen see 6 2 on page 9 NOTE Calibrati...

Page 25: ...rom FMA1700A 1800A Remove the aluminum housing on the side of the connection cable Side the LCD assembly out of the aluminum housing Reinstall jumper to the appropriate location on the 8 pin header bl...

Page 26: ...S FROM REFERENCE GASES The calibration conversion incorporates the K factor The K factor is derived from gas density and coefficient of specific heat For diatomic gases K Kgas Note in the above relati...

Page 27: ...23 APPENDIX 1 COMPONENTS DIAGRAM FMA1700A 1800A METERING PC BOARD...

Page 28: ...uoride BrF3 3855 1161 6 108 Bromotrifluoromethane Freon 13 B1 CBrF3 3697 1113 6 644 1 3 Butadiene C4H6 3224 3514 2 413 Butane C4H10 2631 4007 2 593 1 Butene C4H8 2994 3648 2 503 2 Butene C4H8 CIS 324...

Page 29: ...55 Ethyl Acetylene C4H6 3225 3513 2 413 Ethyl Chloride C2H5Cl 3891 244 2 879 Ethylene C2H4 60 365 1 251 Ethylene Oxide C2H4O 5191 268 1 965 Fluorine F2 9784 1873 1 695 Fluoroform Freon 23 CHF3 4967 17...

Page 30: ...mide CH3Br 5835 1106 4 236 Methyl Chloride CH3Cl 6299 1926 2 253 Methyl Fluoride CH3F 68 3221 1 518 Methyl Mercaptan CH3SH 5180 2459 2 146 Methyl Trichlorosilane CH3 SiCl3 2499 164 6 669 Molybdenum He...

Page 31: ...35 1592 6 516 Sulfuryl Fluoride SO2F2 3883 1543 4 562 Tetrafluoroethane Forane 134A CF3CH2F 5096 127 4 224 Tetrafluorohydrazine N2F4 3237 182 4 64 Trichlorofluoromethane Freon 11 CCl3F 3287 1357 6 129...

Page 32: ...pression Fitting Except Model FMA1700A 1800A Series Max Flow 1000 L min DIMENSION INCH LCD VERSION NO LCD A B C C D D E E F G H 10 L min Tube O Diameter 5 60 1 00 1 00 3 00 5 02 0 69 2 69 4 50 50 L mi...

Page 33: ...29 PARTS OF THE FLOW METER LEFT AND RIGHT VIEWS FRONT VIEW...

Page 34: ...NOTES 30...

Page 35: ...or otherwise shall not exceed the purchase price of the component upon which liability is based In no event shall OMEGA be liable for consequential incidental or special damages CONDITIONS Equipment...

Page 36: ...ne Paddlewheel Systems M U Totalizers Batch Controllers pH CONDUCTIVITY M U pH Electrodes Testers Accessories M U Benchtop Laboratory Meters M U Controllers Calibrators Simulators Pumps M U Industrial...

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