Intek 200 - Manual (Page 22)

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I : \ O F F I C E \ W P M A N U A L \ M a n 2 0 0 r v b . w p d
4.5 TROUBLE SHOOTING
The following tables provide easy-to-follow instructions to trouble shoot flow indication problems and
interpret instrument fault codes. The last table asks for data required by the factory in order to assist you.
Be sure to use a high input impedance digital voltmeter for the readings identified in Table IV. All
readings are to be taken from terminals BRN through R on JP2 (Figure 2). Complete Table IV and fax
it to the factory, (614) 895-0319.
TABLE II. Trouble Shooting Guide - Flow indication problems
OBSERVATION PROBABLE CAUSE REMEDY
Flow indication continually
drifting downward with
constant flow. 1. Coating forming on wetted
surface of transducer.
1. Clean transducer periodically
or adjust calibration (Section
3.4.3) until layer build-up
stabilizes.
Flow indication saturates high
or low — will not respond to
flow change. 1. Flow rate not within range of
meter.
2. Calibration out of range of
actual flow.
3. Partially failed component in
transducer or transmitter.
1. Check flow range requirements.
2. Refer to SECTION 3.4.3 for
Flow Calibration Adjustment.
3. Perform transducer and
transmitter functional test (see
SECTION 4.4). Write results
down and consult factory.
4. Replace fuse as needed.
Flow indication 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.
Monitor temperature indication.
Refer to Installation Section for
discussion on thermal
stabilizing flow system.
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.