WIKA TR33 - Handbuch (Seite 11)

GB
WIKA operating instructions model TR33
14073818.01 01/2014 GB/D
11
Current signal for fault signal configurable in accordance with
NAMUR NE43
downscale < 3.6 mA (typically 3.5 mA)
upscale > 21.0 mA (typically 21.5 mA)
Sensor short-circuit not configurable, in accordance with
NAMUR NE43 downscale < 3.6 mA
(typically 3.5 mA)
Sensor current < 0.3 mA (Self-heating can be neglec-
ted.)
Load R
A
R
A
≤ (U
B
- 10 V) / 23 mA with R
A
in Ω
and U
B
in V
Effect of load ±0.05 % / 100 Ω
Power supply U
B DC 10 ... 30 V
Max. permissible residual ripple 10 % generated by U
B
< 3 % ripple of
the output current
Power supply input protected against reverse polarity
Power supply effect (depending
on the power supply)
±0.025 % / V
Electromagnetic compatibility
(EMC)
2004/108/EC, EN 61326 emission
(group 1, class B) 3) , and interference
immunity (industrial application),
configuration at 20 % of the full
measuring range
Temperature units configurable °C, °F, K
Info data TAG No., descriptor and user message
can be stored in transmitter
Configuration and calibration
data
permanently stored
Electrical connection M12 x 1, 4-pin circular connector
Readings in % refer to the measuring span
For a correct determination of the overall measuring deviation, both sensor and transmitter measu-
ring deviations have to be considered.
1) The temperature transmitter should therefore be protected from temperatures over 85 °C
(185 °F).
2) ±0.2 % for measuring ranges with a lower limit less than 0 °C (32 °F)
3) Use resistance thermometers with shielded cable and ground the shield at at least one end
of the lead if the lines are longer than 30 m or leave the building. Operate the instrument in a
grounded state.
3. Specifications