Manual

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MODEL100 REV D.wpd
4.3 SPARE PARTS
There are no normally recommended spare parts to stock. The transducer and electronics are a matched
set and therefore are not interchangeable with others. Should a spare be needed, a complete unit should
be ordered and stocked. For AC powered units, the spare fuse is a ½A, fast acting fuse. Replace fuse
with Wickmann part number 3730500041 or equivalent. For units powered by 24 Vdc, the fuse is a 1A
slow blow fuse. Replace with Wickmann part number 3741100041.
4.4 TROUBLE SHOOTING
TABLE I. TROUBLE SHOOTING GUIDE
OBSERVATION PROBABLE CAUSE REMEDY
Output continually drifting
downward with constant
flow.
1. Coating forming on wetted
surface of transducer.
1. Clean transducer periodically or
adjust calibration (cal)
potentiometer until layer build-
up stabilizes.
Output saturates high or
low — will not respond to
flow change.
1. Loose transducer cable
connections.
2. Flow rate not yet within range
of meter.
3. Meter/Calib switch in wrong
position.
4. Transducer cable damaged.
5. Bad electronic component.
6. Blown fuse.
1. Securely connect transducer
cable.
2. Check flow.
3. Check Meter/Calib switch is in
"meter" position.
4. Check cable continuity.
5. Perform transducer and
electronics functional test (see
SECTION 3.5). Write results
down and consult factory.
6. Replace fuse as needed.
Output varies with flow
but not stable.
1. Fluid temperature not stable.
2. Fluid mixture not properly
blended.
3. Gas mixed with liquid.
4. Flow not fully developed.
1. Tune temperature controller,
add insulation and/or add static
mixer in front of transducer.
2. Add static mixer in front of
transducer.
3. Reduce gas pressure or check
for air ingress on suction side of
pump. Refer to Installation
Section.
4. Check inlet and outlet for
proper straight line length &
freedom from obstructions.