ABB TTH300 Operating Instruction page 24

24 TTH300 HEAD-MOUNT TEMPERATURE TRANSMITTER | OI/TTH300-EN REV. G
... 8 Electrical connections
... Terminal assignment
Thermocouples / voltages and resistance thermometer (RTD) / thermocouple combinations
A 2 × voltage measurement*
B 1 × voltage measurement
C 2 × thermocouple*
D 1 × thermocouple
E 1 × RTD, four-wire circuit and 1 x thermocouple*
F 1 × RTD, three-wire circuit and 1 x thermocouple*
* Sensor backup / sensor redundancy, sensor drift monitoring, mean measurement, or differential measurement
Figure 16 Terminal assignment thermocouples / voltages and resistance thermometer (RTD) / thermocouple combinations
G 1 × RTD, two-wire circuit and 1 x thermocouple*
H Sensor 1
I Sensor 2
*)
J Interface for LCD indicators and service
1 – 6 Sensor connection (of measuring inset)
7 – 8 4 to 20 mA HART®, PROFIBUS PA®, FOUNDATION Fieldbus®