Honeywell STT850 Series, Руководство пользователя

Страница: 75 / 118

Revision 4.0
STT850 Series HART/DE Option User’s Manual
Page 65
6.4 Analog Output Signal Calibration
The Transmitter analog output can be calibrated at its zero (0) and100% levels using a constant-
current source mode. The Transmitter does not have to be removed from service for the analog output
signal calibration procedure.
The following procedure provides the steps for calibrating the output signal for a Transmitter in the
analog mode. The procedure is similar for a Transmitter in the DE mode, but the MC Toolkit is
required to read the output in percent in place of current or voltage. Figure 9 illustrates the test setup
for the analog output calibration process.
Figure 9
– Analog Output Calibration Test Setup
1. Verify the integrity of the electrical components in the output current loop.
2. Connect the MC Toolkit as indicated, and establish communication with the Transmitter. For
these procedures, values of components in the current loop are not critical, if they support
reliable communication between the Transmitter and the MC Toolkit.
3. Start the MC Toolkit application, and establish communication with the Transmitter.
4. In the Output Calibration box, select the Loop Test button to display the LOOP TEST box.
5. Select the desired constant-level Output: 0 % , 100 % , or Other (any of 0 % - 100 %) .