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About this operating manual 

Series FMG90B  

- 4 - 

 

 

0  About this operating manual 

 

  The operating manual is aimed at specialists and semi-skilled personnel. 

  Before each step, read through the relevant advice carefully and keep to the specified 

order. 

  Thoroughly read and understand the information in the section “Safety instructions”

If you have any problems or questions, please contact your supplier or contact us directly 

at: 

 

 

omega.com 

Tel: (203) 359-1660 

e-mail: [email protected]  

 
 
 

Hazard signs and other symbols used: 

 

WARNING! / CAUTION! Risk of injury! 

This sign indicates dangers that cause personal injuries that can lead to health defects or 

cause considerable damage to property. 

 

CAUTION! Electric current! 

This sign indicates dangers which could arise from handling of electric current. 

 

CAUTION! Material damage! 

This sign indicates actions which could lead to possible damage to material or environmental 

damage. 

 

ADHERE TO OPERATING MANUAL! 

 

 

NOTICE!  

This symbol indicates important notices, 

tips or information. 

 

NO DOMESTIC WASTE! 

The device must not be disposed of 

together with domestic waste. 

 

 

  Pay attention to and comply with 

information that is marked with this symbol.  

  Follow the specified instructions and steps. 

Adhere to the given order. 

  Check the specified points or notices.  

  Reference to another section, document or 

source. 

•  Item. 

 
 
 

Summary of Contents for FMG90B Series

Page 1: ...Electromagnetic Flow Meter FMG90B Series...

Page 2: ...2...

Page 3: ...d measuring operation 13 6 1 Commissioning 13 6 2 Switching on and off 13 6 3 Measuring operation 13 7 Maintenance and cleaning 14 8 Disassembly and disposal 15 9 Technical data 16 9 1 Characteristics...

Page 4: ...ngers that cause personal injuries that can lead to health defects or cause considerable damage to property CAUTION Electric current This sign indicates dangers which could arise from handling of elec...

Page 5: ...its have been carefully checked for their operational reliability before shipment Immediately after receipt please check the outer packaging for damages or any signs of improper handling Report any po...

Page 6: ...ces be exceeded Before installing the device check that the wetted materials of the device are compatible with the media being used 9 Technical data Measuring tube empty or partially filled Conductivi...

Page 7: ...must be aware of this operating manual and have access to it at all times The electrical connection should only be carried out by a fully qualified electrician General safety instructions In all work...

Page 8: ...dle of the measuring tube between the grounding sleeves The FMG90B does not need any moving parts to make measurements The inside of the measuring tube is completely open allowing the fluid to flow un...

Page 9: ...ITABLE TOOLS Use only suitable tools of the correct size 4 1 Installation instructions CAUTION Risk of malfunction due to external magnetic fields Magnetic fields close to the device can cause malfunc...

Page 10: ...due to mutual interference 4 2 Assembly The FMG90B is installed directly into the pipeline The compact design and light weight of the unit make wall mounting unnecessary IMPORTANT NOTICES Only use sui...

Page 11: ...UTION Electric current The electrical connection should only be carried out by a fully qualified electrician De energize the electrical system before connecting the FMG90B Connection cable Suitable co...

Page 12: ...e Supply voltage FMG90B with frequency output Push Pull NPN Open Collector PNP Open Collector 1 Push Pull switching outputs of several FMG90B may not be connected in parallel 2 Recommendation Pull Up...

Page 13: ...voltage Switch on the supply voltage The green LED lights up The FMG90B is ready and goes into measuring mode 6 3 Measuring operation In the measuring mode the green LED flashes proportional to the me...

Page 14: ...of a defect the device must be replaced or sent back the manufacturer for repair CAUTION Material damage When opening the device critical parts or components can be damage Never open the device and pe...

Page 15: ...re disassembly Prior to disassembly ensure that the equipment is switched off and is in a safe and de energized state the equipment is depressurized and has cooled down Disassembly Remove the electric...

Page 16: ...tion ml pulse 0 1 0 25 1 0 2 5 5 0 12 5 Signal shape Square wave signal duty cycle 50 50 Push Pull NPN open collector PNP open collector Signal current 100 mA Electrical characteristics Supply voltage...

Page 17: ...als table Component Material Component wetted Housing ABS Measuring tube POM or PVDF option X Process connections POM or PVDF option X O ring EPDM or FKM option X Electrodes and grounding rings Stainl...

Page 18: ...FMG98B 0 0 0 5 1 0 1 5 2 0 2 5 3 0 0 0 1 0 2 0 3 0 4 0 5 0 6 Pressure drop p psi Flow rate Q GPM US version 0 0 0 5 1 0 1 5 2 0 2 5 0 0 25 0 5 0 75 1 1 25 1 5 Pressure drop p psi Flow rate Q GPM 0 00...

Page 19: ...915B FMG920B FMG925B 0 000 0 125 0 250 0 375 0 500 0 2 4 6 8 10 12 14 Pressure drop p psi Flow rate Q GPM 0 0 0 5 1 0 1 5 2 0 0 10 20 30 40 50 Pressure drop p psi Flow rate Q GPM 0 0 0 1 0 2 0 3 0 4 0...

Page 20: ...20 9 4 Dimensions FMG90B FMG96B Type L1 L2 D1 D2 FMG93B 3 35 0 51 NPT 0 12 FMG96B 3 35 0 51 NPT 0 31 x 0 08 FMG98B 3 35 0 51 NPT 0 31 FMG915B 3 54 0 63 NPT 0 55 FMG920B 3 54 0 63 1 NPT 0 71 FMG925B L1...

Page 21: ...FMG90B Series For your notes Technical changes reserved 21 For your notes...

Page 22: ...For your notes FMG90B Series 22 For your notes...

Page 23: ......

Page 24: ...M5759 0220...

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