12.2.6
Input
12.2.6.1
RTD
Input type
Standard
Min. value
Max. value
∝
Min. measuring
span
Pt10 ... 10,000
IEC 60751
-200 °C
+850 °C
0.003851
10 °C
JIS C 1604-8
-200 °C
+649 °C
0.003916
10 °C
GOST 6651-2009
-200 °C
+850 °C
0.003910
10 °C
Callendar-Van Du‐
sen
-200 °C
+850 °C
-
10 °C
Ni10 ... 10,000
DIN 43760-1987
-60 °C
+250 °C
0.006180
10 °C
GOST 6651-2009 /
OIML R84:2003
-60 °C
+180 °C
0.006170
10 °C
Cu5 ... 1000
Edison Copper
Winding No. 15
-200 °C
+260 °C
0.004270
100 °C
GOST 6651-2009 /
OIML R84:2003
-180 °C
+200 °C
0.004280
100 °C
GOST 6651-94
-50 °C
+200 °C
0.004260
100 °C
Connection type
2-wire, 3-wire and 4-wire
Wire resistance per wire (max.)
50 Ω
Input current
< 0.15 mA
Effect of the wire resistance (with 3-wire and 4-wire connec‐
tions)
< 0.002 Ω / Ω
Cable, wire-wire capacity
Max. 30 nF (Pt1000 & Pt10000 IEC and JIS +Ni1000 &
NI10000)Max. 50 nF (all other input types)
Fault detection, programmable
None, short-circuited, broken, short-circuited or broken
Note: When the low limit for the configured input type is below the constant detection limit for short-circuited inputs, the
detection of short circuits is disabled regardless of the configuration of the fault detection.
Detection limit for short-circuited input
15 Ω
Fault detection time (RTD)
≤ 75 ms (typically 70 ms)
Fault detection time (for 3-wire and 4-wire)
≤ 2000 ms
12.2.6.2
Thermocouple (TC)
Input type
Min. temperature
Max. temperature
Min. measuring span
Standard
B
0 (85) °C
+1820 °C
100 °C
IEC 60584-1
E
-200 °C
+1000 °C
50 °C
IEC 60584-1
J
-100 °C
+1200 °C
50 °C
IEC 60584-1
K
-180 °C
+1372 °C
50 °C
IEC 60584-1
Technical data
12.2 SITRANS TH320/TH420/TR320/TR420/TF320/TF420
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
Operating Instructions, 05/2020, A5E41864807-AB
201
