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Instruction Manual
Resistance
thermometers
3
4
RTD
No line compensation
3
4
RTD
Three-wire line compensation
3
4
RTD
Four-wire line compensation
Note:
Line resistance (per wire in the case of
T>600 °C (1112 °F): max. 10 Ω
T<600 °C (1112 °F): max. 30 Ω
1)
Line resistance for compensation is programmable.
Figure 6
Sensor pin assignments
SITRANS TK/TK-H
C79000-B7174-C12-07
6
5
1)
6
5
6
5
3
/
-wire connections)
4
7NG3120, 7NG3121, 7NG3122
Thermocouple
3
4
+
Internal cold junction compen-
sation (CJC)
3
4
+
RTD
External CJC. No line compen-
1)
sation
3
4
+
RTD
External CJC. Three-wire line
compensation
6
--
5
T/C
6
--
5
T/C
6
--
5
T/C
47
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