22 TTH300 HEAD-MOUNT TEMPERATURE TRANSMITTER | OI/TTH300-EN REV. E
… 8 Electrical connections
Pin assignment
Resistance thermometers (RTD) / resistors (potentiometer)
A Potentiometer, four-wire circuit
B Potentiometer, three-wire circuit
C Potentiometer, two-wire circuit
D 2 × RTD, three-wire circuit*
E 2 × RTD, two-wire circuit*
F RTD, four-wire circuit
G RTD, three-wire circuit
H RTD, two-wire circuit
I Sensor 1
J Sensor 2*
K Interface for LCD indicators and service
1 – 6 Sensor connection (of measuring inset)
7 – 8 4 to 20 mA HART®, PROFIBUS PA®, FOUNDATION Fieldbus®
* Sensor backup / sensor redundancy, sensor drift monitoring, mean measurement, or differential measurement
Figure 15: Terminal assignment resistance thermometers (RTD) / resistors (potentiometer)
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