WIKA TR30 - Handbuch (Seite 11)

GB
WIKA operating instructions model TR30
11377551.06 07/2014 GB/D
11
Analogue output 4 ... 20 mA, 2-wire
Measuring error per
DIN EN 60770, 23 °C ±5 K
0.2 % (Transmitter) 3)
Linearisation Linear with temperature per DIN EN 60751
Linearisation error ±0.1 % 4)
Switch-on delay, electrical < 10 ms
Signalling of sensor burnout
Configurable: NAMUR downscale < 3.6 mA
(typically 3 mA)
NAMUR upscale > 21.0 mA (typically 23 mA)
Sensor short-circuit Not configurable, generally NAMUR downscale
< 3.6 mA (typ. 3 mA)
Load R
A
R
A
≤ (U
B
- 9 V) / 0.023 A with R
A
in Ω and U
B
in V
Effect of load ±0.05 % / 100 Ω
Power supply U
B
DC 10 ... 35 V
Max. permissible residual
ripple
10 % at 24 V / maximum 300 Ω Load
Power supply input Protected against reverse polarity
Power supply effect ±0.025 % / V
Electromagnetic compatibility
(EMC)
2004/108/EC, DIN EN 61326 emission
(Group 1, Class B) and immunity (industrial
application) 5) , and also per NAMUR NE21
Temperature units Configurable °C, °F, K
Info data TAG No., descriptor and message can be stored
in transmitter
Configuration and calibration
data
Permanently stored in EEPROM
Electrical connection ■ M12 x 1 circular connector, 4-pin
■ Angular DIN connector Form A for cable with
Ø 6 ... 8 mm, cross section max. 1.5 mm²
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) For detailed specifications for Pt100 sensors, see Technical Information IN 00.17 at www.wika.com.
2) The temperature transmitter should therefore be protected from temperatures over 85 °C
3) For measuring spans smaller than 50 K additional 0.1 K
4) ±0.2 % for measuring ranges with a lower limit less than 0 °C
5) Use resistance thermometers with shielded cable, and ground the shield on at least one end of
the lead, if the cables are longer than 30 m or leave the building.
3. Specifications