Omega Speaker Systems FMG3000 - Manual (Page 13)

13
10.2. Troubleshooting
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.
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, the pipe is full, 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)
1
2
3
4
JP2
D7
D6
Flow Flow
Symptom Possible Cause Solution
Output is erratic and unstable.
Magmeter installed too close to upstream
obstruction.
Relocate the magmeter to have straight
uninterrupted pipe upstream of the sensor for
at least 10 x the pipe diameter.
Magmeter located in area exposed to air
bubbles/pockets.
Eliminate air bubbles in the pipe.
Magmeter is installed in pipe backwards.
Remove the magmeter and reinstall with
the fl ow direction arrow on the sensor body
pointed DOWNSTREAM.
Electrical noise is interfering with the
measurement.
Review the grounding of the magmeter and
the pipe. Install adequate Earth ground to
allow the Magmeter to operate properly.
Electrodes are coated with solids. Carefully clean the electrodes.
New sensor; metal surface not properly
conditioned.
Soak sensor overnight in fl uid.
Output is not 0 when fl ow is stopped.
Electrodes not adequately conditioned. Soak sensor overnight in fl uid.
Vibration or other movement in pipe causes
magmeter to detect fl ow.
Increase the Low Flow Cutoff.
Electrical noise interference
Modify grounding to protect the Magmeter
from interference.
Defective Magmeter Return to factory for service.
4 to 20 mA output is incorrect.
4 to 20 mA is not scaled same as Loop device. Respan Loop device to match Magmeter.
Range Jumper not placed correctly.
Set Range Jumper correctly.
Defective Magmeter Return to factory for service
Frequency output is inoperative
Loop output is inoperative.
Blue jumper not in correct position Place blue jumper correctly. (page 6)
Wiring is not correct. Check wiring, make corrections.
Frequency input to other manufacturer's fl ow
instrument does not have pull-up resistor.
Install 10 kΩ resistor. (page 8)
Output is 22.1 mA
Conductivity is less than 20 μS/cm (The fl uid is
too clean for Magmeter.)
Unsuitable application for Magmeter.
Electronic component failure. Return Magmeter to factory.