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Reference Manual
00809-0100-4444, Rev AC
Section 8: Maintenance
January 2015
Maintenance
Installing terminal block socket module
1. Insert the new terminal block socket module, press the base into its keyed position, and
tighten the two mounting screws.
2. Connect the terminal block to the junction box housing by tightening the two
mounting screws. Install the divider with the two mounting screws if applicable.
3. Reconnect remote cabling and power and replace junction box cover.
8.6 Trims
Trims are used to calibrate the analog loop, calibrate the transmitter, re-zero the transmitter,
and calibrate the transmitter with another manufacturer's sensor. Proceed with caution
whenever performing a trim function.
8.6.1 D/A trim
The D/A trim is used to calibrate the 4-20mA analog loop output from the transmitter. For
maximum accuracy, the analog output should be trimmed for your system loop. Use the
following steps to complete the output trim function.
1. Set the loop to manual, if necessary.
2. Connect a precision ammeter in the 4-20mA loop.
3. Initiate the D/A trim function with the LOI or Handheld Communicator.
4. Enter the 4mA meter value when prompted to do so.
5. Enter the 20mA meter value when prompted to do so.
6. Return the loop to automatic control, if necessary.
The 4-20mA trim is now complete. The D/A trim can be repeated to check the results.
Alternatively, the analog output test can also be used to verify loop performance.
LOI menu path Diagnostics, Trims
Traditional fast keys 1,2,5
Device dashboard
3,4
LOI menu path
Diagnostics, Trims, D/A Trim
Traditional fast keys 1,2,5,1
Device dashboard 3,4,4,5