General Information; Sensor Pin Assignment; Resistance Thermometers - Siemens SITRANS TF 7NG313 Serie Betriebsanleitung

Instruction Manual
1

General Information

WARNING
!
indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
Trouble-free and reliable operation of this device is conditional upon the proper storage
and assembly as well as careful operation and maintenance. This device may only be
assembled and operated by specialized personnel. These Instructions contain informa-
tion on the standard signal connections of the sensor in the absence of current.
Before installation, commissioning and during operation in hazardous areas, it is abso-
lutely essential to observe the corresponding information and prescriptions of the EC-
Type-Examination Certificate and the relating Instruction Manual for SITRANS TK/TK-H,
order no. C79000-B7174-C12.
2

Sensor Pin Assignment

Resistance
thermometers
3
4
5
RTD
1)
No line compensation
3
4
5
RTD
Three-wire line compensation
3
4
5
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 1 Sensor pin assignment of transmitter
A5E00046014-07
6
Internal cold junction compen-
sation (CJC)
6
External CJC. No line compen-
sation
6
External CJC. Three-wire line
compensation
3
/ -wire connections)
4
Thermocouple
3
6
4 --
5
+
T/C
3
6
--
4
5
+
T/C
RTD
1)
3
6
4 --
5
+
T/C
RTD
SITRANS TF
23