Specifications - WIKA TR21 Mode D'emploi

3. Specifications

3. Specifications
Output signal Pt100
GB
Temperature range
Measuring element
Connection method
Sensor tolerance value
per DIN EN 60751
Output signal 4 ... 20 mA
Temperature range
Measuring element
Connection method
Sensor tolerance value
per DIN EN 60751
Measuring span
Basic configuration
Analogue output
Measuring deviation
per DIN EN 60770, 23 °C ±5 K
Linearisation
Linearisation error
Switch-on delay, electrical
Signalling of sensor burnout
Sensor short-circuit
Load R
A
Effect of load
Power supply
Max. permissible residual ripple
Power supply input
Readings in % refer to the measuring span
For a correct determination of the overall measuring error, both sensor and transmitter measuring deviations have to
be considered.
1) The small design of the face-sensitive measuring resistors leads to reduced heat dissipation with short insertion lengths.
Available for temperature range -50...+150 °C in Classes A and B.
Face-sensitive measuring resistors are generally used for thermowell insertion lengths smaller than 11 mm.
2) For detailed specifications for Pt100 sensors, see Technical Information IN 00.17 at www.wika.com
3) The temperature transmitter should therefore be protected from temperatures over 85 °C
4) For measuring spans smaller than 50 K additional 0.1 K
5) ± 0.2 % for measuring ranges with a lower limit less than 0 °C
8
Measuring range -50 ... +150 °C, -50 ... +250 °C
Pt100 (measuring current: 0.1 ... 1.0 mA) standard measuring resistor
Pt100 (measuring current: 0.1 ... 1.0 mA) face-sensitive measuring
resistor
1)
3-wire
4-wire
Class B
2)
Class A
Class AA
Measuring range -50 ... +150 °C, -50 ... +250 °C
Pt100 (measuring current: 0.5 mA) standard measuring resistor
Pt100 (measuring current: 0.5 mA) face-sensitive measuring resis-
tor
1)
3-wire
Class B
2) 4)
Class A
Class AA
minimum 20 K, maximum 300 K
Measuring range -50 ... +150 °C, -50 ... +250 °C depending on the
selected temperature range, other measuring ranges are adjustable
4 ... 20 mA, 2-wire
0.2 % (Transmitter)
linear to temperature per DIN EN 60751
±0.1 %
5)
< 10 ms
configurable: NAMUR downscale < 3.6 mA (typically 3 mA)
NAMUR upscale > 21.0 mA (typically 23 mA)
not configurable, generally NAMUR downscale < 3.6 mA (typically
3 mA)
R ≤ (U - 10 V) / 0.023 A with R
A B
± 0.05 % / 100 Ω
DC 10 ... 35 V
10 % at 24 V / maximum 300 Ω Load
protected against reverse polarity
4)
in Ω and U
A
WIKA operating instructions model TR21
3)
in V
B