Specifications

2/67
Siemens FI 01 · 2015 US Edition
Temperature Measurement
Transmitter for field mounting/field indicator
SITRANS TF - Transmitter, two-wire system and SITRANS TF - Field indicator for 4 to 20 mA
2
■ Schematics
SITRANS TF, sensor connection assignment
36
4
3-W
5
+
-
3
45
6
36
4
3-W
5
+
-
3
45
6
36
4
3-W
5
+
-
3
45
6
36
4
3-W
5
+
-
3
45
6
36
4
3-W
5
+
-
3
45
6
36
4
3-W
5
+
-
3
45
6
36
4
3-W
5
+
-
3
45
6
36
4
3-W
5
+
-
3
45
6
36
4
3-W
5
+
-
3
45
6
36
4
3-W
5
+
-
3
45
6
36
4
3-W
5
+
-
3
45
6
36
4
3-W
5
+
-
3
45
6
36
4
3-W
5
+
-
3
45
6
36
4
3-W
5
+
-
3
45
6
Resistance thermometer Resistance
Thermocouple
Current measurement
Voltage measurement
Two-wire system
1)
Three-wire system
Four-wire system
Generation of average
value / difference
1)
Two-wire system
1)
Three-wire system
Four-wire system
Generation of average
value / difference
1)
Cold junction compensation
Internal/fixed value
Cold junction compensation with
external Pt100 in two-wire system
1)
Cold junction compensation with
external Pt100 in three-wire system
Generation of average value / difference
with internal cold junction compensation
1)
Programmable line resistance for the purpose of correction.
RTD
RTD
RTD
R
R
R
R2
U
R
I
+-
+-
R1
+ TC -
+ TC -
RTD
RTD2
RTD1
RTD
+ TC -
+ TC1 -
+ TC2 -
© Siemens AG 2015