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Table 12 Hart process variable
Subject Description
Process Variable
The unit of the process variable depends on the setting of the transmitter. Please refer to transmitter
output setting for details
Output current Transmitter output current, unit: mA
Percentage The percentage of temperature readout in the temperature range of the transmitter
Loop Current Loop current of the transmitter, unit: mA
Second variable The second variable of the transmitter, depends on the settings of the transmitter manufacturer
Third variable The third variable of the transmitter, depends on the settings of the transmitter manufacturer
Fourth variable The fourth variable of the transmitter, depends on the settings of the transmitter manufacturer
3.3 Temperature measurement
The calibrator supports thermocouple (TC) and thermal resistance (RTD) temperature measurement.
3.3.1 TC measurement
The connection of thermocouple measurement is shown in the Figure 19 TC measurement. Then click the switching
menu of channel 1 and select the TC measurement .
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