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Datamate 2200 O&M
Page 33
7.4 Flow Meter Zeroing
CAUTION: Failure to zero the flow meter at initial startup will cause the transmitter
to produce inaccurate pulse and analog output signals and on the optional LCD
display may indicate flow registration under no flow conditions.
To ensure accurate measurements, zero the flow meter before putting the flow meter in
operation.
Flow meter zeroing establishes the flow meter response to zero flow and sets the zero
baseline for flow measurement.
7.4.1 Automatic Zeroing Procedure
1. Install the transducer according to the transducer installation guide (M600).
2. Fill the transducer completely with the process fluid.
3. Shutoff the downstream valve after the transducer. Ensure there is no flow
through the transducer.
CAUTION: Flow through the transducer during flow meter zeroing will
result in an inaccurate zero setting.
Make sure fluid through the transducer is completely stopped during flow
meter zeroing.
4. Initiate flow meter zeroing in either of the following ways:
1. Press and hold the ZERO button until the LED remains on continuously.
Figure 7.3.1 shows the location of the ZERO button and LED in the
transducer wiring compartment.
2. Initiate a zero command from the optional key buttons on the Datamate
2200 unit or
3. Initiate a zero command from a remote IBM-compatible computer with the
NexLink software or a handheld HART Communicator.
The LED remains on continuously or the optional LCD reads “Zeroing” for 1-2
minutes during zeroing. After the zeroing procedure has been completed, the
LED will go off. The optional LCD will again indicate the flow rate.
To abort at any time during the zeroing procedure, recycle power to the transmitter
or press the CANCEL key on the Datamate 2200 enclosure if equipped.
7.5 Ready for Process Measurement
WARNING: OPERATING TRANSMITTER WITHOUT HOUSING IN PLACE EXPOSES
ELECTRICAL HAZARDS THAT CAN CAUSE PROPERTY DAMAGE, INJURY OR
DEATH.
After flow meter zeroing has been completed as described in Section 7.4 the Datamate
2200 transmitter is ready for process measurement.
Summary of Contents for Datamate 2200
Page 1: ...Datamate 2200 Operating Maintenance Manual M 612 Rev G Datamate 2200...
Page 18: ...Datamate 2200 O M Page 12...
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