Emerson 2200S User Manual
Configuration and Use Manual
81
Testing and Moving to Production
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Figure 7-9
Communicator – Scaled AO trim procedure
7.4.2
Expanded mA output trim
Adapt the following procedure as required for your installation:
1. Trim the mA output at the Model 2200S transmitter as described in Section 7.4.1. Use a
milliamp measurement point between the Model 2200S transmitter and the I.S. barrier or the
Micro Motion adapter-barrier (i.e., mA Measurement Point = 12–20 mA).
Micro Motion adapter-barrier (i.e., mA Measurement Point = 12–20 mA).
2. At the transmitter, fix the mA output to 12 mA, then check the mA reading at the host.
3. At the transmitter, fix the mA output to 20 mA, then check the mA reading at the host.
4. If the mA readings at the host do not meet accuracy requirements:
•
If you have an third-party barrier, troubleshoot the barrier installation and wiring.
•
If you have the Micro Motion adapter-barrier, calibrate the adapter-barrier. Instructions are
provided in the manual entitled Micro Motion Model 2200S Transmitters: Installation
Manual.
provided in the manual entitled Micro Motion Model 2200S Transmitters: Installation
Manual.
Enter low mA value
ENTER
OK
On-Line Menu >
3 Diag/Service >
7 Scaled AO Trim
3 Diag/Service >
7 Scaled AO Trim
CHANGE
Enter high mA value
ENTER
PROCEED
Trim at low mA value
Trim at high mA value
OK
Set mA measurement point