Current Transmitter - Siemens SITRANS P DS III Operating Instructions Manual

Operation
6.5 Local operation
Condition
You are familiar with the correct operation of the transmitter and the associated safety notes.
Zero point calibration for gauge pressure transmitter
To calibrate the zero point, proceed as follows:
1. Pressurize the transmitter.
2. Set mode 7.
3. Press the [↑] and [↓] keys simultaneously for 2 seconds.
4. Save using the [M] key.
Zero point calibration for absolute pressure transmitter
Note
You need a reference pressure known to you which lies within the measuring limits.
To calibrate the zero point, proceed as follows:
1. Create the reference pressure.
2. Set mode 7.
3. Set the reference pressure on the display.
4. Save using the [M] key.
6.5.7

Current transmitter

Introduction
In mode 8, switch the pressure transmitter into the constant current operation. You can
connect an external current transmitter in the constant current operation. The current then no
longer corresponds to the process variable. The following output current can be adjusted
irrespective of the input pressure:
● 3.6 mA
● 4.0 mA
● 12.0 mA
● 20.0 mA
● 22.8 mA
You can use HART communication to adjust intermediate values.
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SITRANS P DS III with HART
Operating Instructions, 06/2013, A5E00047092-09