10. Maintenance

The FMG-3000 series Magmeter requires very little maintenance. There are no user-serviceable components in the Magmeter.

•If the fl uid contains deposits and solids that may coat the electrodes, a regular cleaning schedule is recommended.

•Do not use abrasive materials on the metal electrodes. Clean with soft cloth and mild detergent only.

•Use a cotton swab and mild detergent to remove deposits on the metal electrodes at the tip of the sensor.

10.1.Environmental Recommendations:

•When used properly, this product presents no inherent danger to the environment.

•Please follow local ordinance when disposing of this or any product with electronic components.

10.2 Troubleshooting

Symptom

 

Possible Cause

 

Possible Solution

 

 

 

 

 

• Frequency or Current

•

Magmeter installed too close to

•

Move the Magmeter upstream at least

output is erratic.

 

upstream obstruction.

 

10 pipe diameters from obstruction.

 

• Magmeter electrodes are coated with

•

Clean the electrodes with soft cloth.

 

 

solids.

 

Do not use abrasives.

 

• Magmeter electrodes exposed to air

•

Eliminate air bubbles in the pipe.

 

 

bubbles/pockets.

•

Remove the Magmeter and reinstall

 

• Electrical noise is interfering with the

 

with the fl ow direction arrow on the

 

 

measurement.

 

sensor body pointed DOWNSTREAM.

 

• New sensor, metal surface not

•

Modify grounding as required

 

 

properly conditioned.

 

to protect the Magmeter from

 

 

 

 

interference.

 

 

 

•

Soak sensor overnight in fl uid.

 

 

 

 

• Output is not 0 when fl ow is stopped.

• Electrode not adequately conditioned.

 

• Soak sensor overnight in fl uid.

• Pipe is empty, Magmeter is not in fl uid.

 

• Confi gure pipe so electrodes are

 

 

 

• Electrical noise is interfering with the

 

always in fl uid.

 

 

measurement.

 

• Modify grounding as required

 

•

Defective Magmeter

 

to protect the Magmeter from

 

 

 

 

interference.

 

 

 

 

• Set low fl ow cutoff higher.

 

 

 

 

• Return to factory for service.

 

 

 

 

• 4-20 mA output is incorrect.

• 4-20 mA is not scaled same as Loop

 

• Respan Loop device to match

 

device.

 

Magmeter.

 

 

 

 

• Loop device is not scaled same as

 

• Set Range Jumper correctly.

 

 

Magmeter.

 

• Return to factory for service.

 

• Range Jumper not placed correctly.

 

 

 

•

Defective Magmeter

 

 

 

 

 

 

 

• Frequency output is inoperative

•

FMG-3000 is wrong model.

 

• Frequency model is FMG-3001 and

 

FMG-3101 series.

• Loop output is inperative.

•

Blue jumper not in correct position.

 

 

• Place blue jumper correctly. (Sec. 5

 

• Wiring is not correct.

 

 

 

pg. 9)

 

• Frequency input to other

 

 

 

• Check wiring, make corrections.

 

 

manufacturer's fl ow instrument does

 

 

 

 

• Install 10kΩ resistor. Sec 8.1, pg. 6)

 

 

not have pull-up resistor.

 

 

 

 

 

 

 

 

 

 

• Output is 22.1 mA.

•

Conductivity is less than 20 µS/cm.

 

• Unsuitable application for Magmeter.

 

•

Electronic component failure.

 

• Return to factory for service.

 

 

 

 

 

Troubleshooting with the RED and BLUE lights

The FMG-3000 uses two colored LEDs to indicate the status of the instrument. They are located at the top of the magmeter, inside the clear plastic cap.

No Lights:

The power is off or the sensor is not connected

Solid Blue (D7):

The power is on but there is no fl ow in the pipe.

Blinking Blue (D7):

Normal operation, blink rate is proportional to the fl ow rate.

Alternating Red-Blue:

Empty pipe indication (electrodes are not wet.)

Blinking Red (D6):

System errors (Electrical noise interference)

Solid Red (D6):

Instrument error (defective electronics component)

JP2

4

3

2

1

D7

D6

11

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Omega Speaker Systems FMG3000 manual Maintenance, Symptom Possible Cause Possible Solution, Environmental Recommendations
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FMG3000 specifications

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