Quick start with the display
c.
Verify the current value.
Postrequisites
• If the mA output readings were slightly off at the receiving device, you can correct this discrepancy
by trimming the output.
• If the mA output reading was significantly off (±200 microamps), or if at any step the reading was
faulty, verify the wiring between the transmitter and the remote device, and try again.
• If the mA input reading was slightly off at the transmitter, trim and calibrate the input at the
remote input device.
2.5
Zero the flowmeter
Zeroing the flowmeter establishes the flowmeter’s point of reference when there is no flow.
Prerequisites
To prepare for the zero procedure:
1. Allow the flowmeter to warm up for at least 20 minutes after applying power.
2. Run the process fluid through the sensor until the sensor temperature reaches the normal process
operating temperature.
3. Stop flow through the sensor by shutting a valve downstream from the sensor.
4. Ensure that flow has completely stopped through the sensor, and that the sensor is completely
full of process fluid.
5. Check the flow rate. If the flow rate is close to zero, you should not need to zero the flowmeter.
Important
The meter was zeroed at the factory, and should not require a field zero.
Note
Do not zero the flowmeter if a high-severity alarm is active. Correct the problem, then zero the
flowmeter. You may zero the flowmeter if a low-severity alarm is active.
Procedure
1.
Initiate flowmeter zero by choosing
OFFLINE MAINT→ZERO→CAL ZERO
, and select
CAL/YES?
.
Dots traverse the display while flowmeter zero is in progress.
2.
Read the zero result on the display.
The display will report
CAL PASS
if the zero was successful, or
CAL FAIL
if it was not. If the zero fails,
restore the factory zero (if available).
2.5.1
Restore factory zero
Procedure
Restore the factory zero with the display.
Configuration and Use Manual
23
Содержание Micro Motion 9739 MVD
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Страница 30: ...Quick start with the display OFFLINE MAINT RESTORE ZERO RESTORE YES 24 Micro Motion 9739 MVD Transmitters ...
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Страница 207: ...Appendices and reference ...
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Страница 230: ...Using the transmitter display Figure C 4 Offline menu version information 224 Micro Motion 9739 MVD Transmitters ...
Страница 231: ...Using the transmitter display Figure C 5 Offline menu configuration units and I O Configuration and Use Manual 225 ...
Страница 233: ...Using the transmitter display Figure C 7 Offline menu configuration display Configuration and Use Manual 227 ...
Страница 234: ...Using the transmitter display Figure C 8 Offline menu Simulation loop testing 228 Micro Motion 9739 MVD Transmitters ...
Страница 236: ...Using the transmitter display Figure C 10 Offline menu Zero 230 Micro Motion 9739 MVD Transmitters ...
Страница 239: ...Using ProLink II with the 9739 MVD transmitter Figure D 2 Configuration menu Configuration and Use Manual 233 ...
Страница 241: ...Using ProLink II with the 9739 MVD transmitter Figure D 4 Configuration menu continued Configuration and Use Manual 235 ...
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Страница 245: ...Using the Field Communicator with the 9739 MVD transmitter Figure E 2 Overview menu Configuration and Use Manual 239 ...