EN
WIKA operating instructions models TR31-3, TR31-K
14096788.08 02/2022 EN/DE/FR/ES
29
12. Specifications
12.
Specifications
Measuring element
Type of measuring element
Version 4 ... 20 mA
(model TR31-x-x-TT)
Pt1000
(measuring current < 0.3 mA; self-heating
can be ignored)
Version Pt100 (model TR31-x-x-Px)/
Pt1000 (model TR31-x-x-Sx)
■
Pt100 (measuring current: 0.1 ... 1.0 mA)
■
Pt1000 (measuring current: 0.1 ... 0.3 mA)
→ For detailed specifications for Pt
sensors, see Technical information
IN 00.17 at www.wika.com.
Connection method
Version 4 ... 20 mA
(model TR31-x-x-TT)
2-wire
Version Pt100 (model TR31-x-x-Px)/
Pt1000 (model TR31-x-x-Sx)
■
2-wire
■
3-wire
■
4-wire
Tolerance value of the measuring element
1)
per IEC 60751
Version 4 ... 20 mA
(model TR31-x-x-TT)
Class A
Version Pt100 (model TR31-x-x-Px)/
Pt1000 (model TR31-x-x-Sx)
■
Class A
■
Class B at 2-wire
Accuracy specifications (4 ... 20 mA version)
Tolerance value of the measuring
element
1)
per IEC 60751
Class A
Measuring deviation of the
transmitter per IEC 62828
±0.25 K
Total measuring deviation per
IEC 62828
Measuring deviation of the measuring
e transmitter
Influence of ambient temperature
0.1 % of the set measuring span / 10 K T
a
Influence of supply voltage
±0.025 % / V (depending on the supply
voltage U
B
)
Influence of load
±0.05 % / 100 Ω