Specifications

2/21
Siemens FI 01 · 2015 US Edition
Temperature Measurement
Transmitters for mounting in sensor head
SITRANS TH300 two-wire system, universal, HART
2
■ Schematics
SITRANS TH300, 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
12
3
6
5
1
SIEMENS
4..20mA
+
–
2
6
Tes t
Tes t
Resistance thermometer Resistance
Thermocouple
Current measurement
Voltage measurement
Connection of auxiliary
power supply (U
aux
)
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.
U
aux
+
-
RTD
RTD
RTD
R
R
R
R2
U
R
I
+-
+-
R1
+ TC -
+ TC -
RTD
RTD2
RTD1
RTD
+ TC -
+ TC1 -
+ TC2 -
© Siemens AG 2015