Specifications; Measuring Element - WIKA TR31-3 Betriebsanleitung

14. Specifications

14. Specifications

Measuring element

Type of measuring element
Version 4 ... 20 mA
(model TR31-x-x-TT)
Version Pt100 (model TR31-x-x-Px)/
Pt1000 (model TR31-x-x-Sx)
Connection method
Version 4 ... 20 mA
(model TR31-x-x-TT)
Version Pt100 (model TR31-x-x-Px)/
Pt1000 (model TR31-x-x-Sx)
Tolerance value of the measuring element
Version 4 ... 20 mA
(model TR31-x-x-TT)
Version Pt100 (model TR31-x-x-Px)/
Pt1000 (model TR31-x-x-Sx)
Accuracy specifications (4 ... 20 mA version)
Tolerance value of the measuring
element per IEC 60751
1)
Measuring deviation of the
transmitter per IEC 62828
Total measuring deviation per
IEC 62828
Influence of ambient temperature
Influence of supply voltage
Influence of load
WIKA operating instructions models TR31-3, TR31-K (Ex i)
Pt1000
(measuring current < 0.3 mA; self-heating
can be ignored)
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.
2-wire
2-wire
■
3-wire
■
4-wire
■
per IEC 60751
1)
Class A
Class A
■
Class B at 2-wire
■
Class A
±0.25 K
Measuring deviation of the measuring
element + transmitter
0.1 % of the set measuring span / 10 K T
±0.025 % / V (depending on the supply
voltage U )
B
±0.05 % / 100 Ω
EN
a
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