WIKA TR21-A Manual De Instrucciones página 25

13. Specifications
Measuring element
Tolerance value of the measuring element
4 ... 20 mA version
Pt100/Pt1000 version
1) Face-sensitive measuring resistors, through their small design they serve to reduce the heat dissipation with short insertion
lengths. Available for the temperature range up to 150 °C [302 °F].
For protection tube insertion lengths of less than 50 mm, face-sensitive measuring resistors are recommended.
For protection tube insertion lengths of less than 11 mm, face-sensitive measuring resistors are generally used.
2) Depending on the process connection, the deviation can be greater.
Accuracy specifications (4 ... 20 mA version)
Tolerance value of the measuring
element per IEC 60751
2)
Measuring deviation of the transmitter
per IEC 62828
Total measuring deviation in accordance
with IEC 62828
Influence of the ambient temperature
Influence of supply voltage
Influence of the load
Linearisation
Output error
Reference conditions
Ambient temperature T
Supply voltage U
B
1) ±0.2 % for start of measuring range less than 0 °C [32 °F]
2) Depending on the process connection, the deviation can be greater.
WIKA operating instructions model TR21
Class A
Class AA
■
Class A
■
ref
a
ref
per IEC 60751
2)
Class A
±0.25 K
Measuring deviation of the measuring element +
transmitter
0.1 % of the set measuring span / 10 K T
±0.025 % of the set measuring span / V (depending
on the supply voltage U
±0.05 % of the set measuring span / 100 Ω
Linear to temperature per IEC 60751
±0.1 % of the set measuring span
1)
23 °C
DC 12 V
a
)
B
EN
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