D625 User s Man ual
METER TROUBLESHOOTING
Refer to the table below for basic troubleshooting of the D625 Meter
Troubleshooting checklist
Meter fails to turn on (No
audible noise heard)
Verify the +18-32 VDC power supply is properly
connected
Verify the cables are secured to the meter properly
Verify customer wiring is connected to the correct pins
INSPECT each terminal connection for broken wires or
loose connections
Display fails to function (No LCD
Output)
Verify the cables are secured to the meter properly
Verify the electronics enclosure is not damaged (i.e. no
obvious cracks, breaks, etc.)
Meter Density output becomes
erratic or inconsistent
Corrosion or debris buildup inside the resonant tubes
Clean per the cleaning procedure outlined earlier in this
manual
Inconsistent Density Output
Readings
Air or gas bubbles are trapped in the system
Purge air from the system
Tighten all flanges, fittings and hoses
Re-orient meter position to alleviate air in tubes
Inconsistent Density Output
Readings
Excessive Vibration present in the installation
Install flexible tubing/hoses to the meter to reduce the
amount of vibration felt by the meter
Inconsistent Density Output
Readings
Verify that the 4-20mA density output range is
programmed correctly into the density processor
Verify that your fluid is within the 4-20mA density output
range
Incorrect Density Readings
Verify that ALL CALIBRATION COEFFICIENTS are entered
into the density processor or flow computer correctly
(according to the Calibration Certificate)
Always handle the meter with care during unpacking, installation, service/maintenance,
and shipping.
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