iTEMP TMT82 Operating menu and parameter description
Endress+Hauser 75
"Current output" submenu
Adjustment of the analog output (4 and 20 mA current trimming)
Current trimming is used to compensate the analog output (D/A conversion). Here, the
output current of the transmitter must be adapted so that it suits the value expected at the
higher-order system.
NOTICE
Current trimming does not affect the digital HART
®
value. This can cause the
measured value shown on the plug-in display to differ from the value displayed in the
higher-order system.
‣
The digital measured values can be adapted with the sensor trimming parameter in the
menu Expert → Sensor → Sensor trimming.
Procedure
1. Start
ß
2. Install an accurate amperemeter (more accurate then the transmitter) in the current loop.
ß
3. Switch on current output simulation and set the simulation value to 4 mA.
ß
4. Measure the loop current with the amperemeter and make a note of the value.
ß
5. Set the simulation value to 20 mA.
ß
6. Measure the loop current with the amperemeter and make a note of the value.
ß
7. Enter the current values determined as adjustment values in the Current trimming 4 mA / 20 mA
parameters
ß
8. End
Output current
Navigation Setup → Advanced setup → Current output→ Output current
Expert → Output → Output current
Description Use this function to view the calculated output current in mA.
Measuring mode
Navigation Setup → Advanced setup → Current output→ Measuring mode
Expert → Output → Measuring mode
Description Enables the inversion of the output signal.
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