Specifications - WIKA TR31-3 Betriebsanleitung

3. Specifications

3. Specifications
Thermometer with transmitter and 4 ... 20 mA output signal
(model TR31-x-x-TT)
EN
Temperature range
Measuring element
Connection method
Tolerance value of the
measuring element
Measuring deviation of
the transmitter
Total measuring deviation
in accordance with
IEC 60770
Measuring span
Basic configuration
Analogue output
Linearisation
Linearisation error
Switch-on delay, electrical Max. 4 s (time before the first measured value)
Warming-up period
Current signals for error
signalling
Sensor short-circuit
Sensor current
Load R
A
Effect of load
Power supply U
12
Without neck tube -30 ... +150 °C (-22 ... +302 °F)
With neck tube -30 ... +250 °C (-22 ... +482 °F)
Pt1000
2-wire
Class A
(per IEC 60751)
±0.25 K
(per IEC 60770)
Measuring deviation of the measuring element +
the transmitter
Minimum 20 K, maximum 300 K
Measuring range 0 ... 150 °C (32 ... 302 °F), other
measuring ranges are adjustable
4 ... 20 mA, 2-wire
Linear to temperature per IEC 60751
±0.1 %
After approx. 4 minutes, the instrument will
function to the specifications (accuracy) given in
the data sheet.
Configurable in accordance with NAMUR NE43
downscale ≤ 3.6 mA
Not configurable, in accordance with NAMUR NE43
downscale ≤ 3.6 mA
< 0.3 mA (self-heating can be ignored.)
R ≤ (U
A
±0.05 % / 100 Ω
DC 10 ... 30 V
B
WIKA operating instructions models TR31-3, TR31-K (Ex i)
3)
upscale ≥ 21.0 mA
- 10 V) / 23 mA with R
B
1) 2)
in Ω and U in V
A B