Specifications – WIKA TR30 Benutzerhandbuch
Seite 11
14016442.01 06/2011 GB/D
WIKA operating instructions model TR30 per ATEX
11
GB
Power supply
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
Angular DIN connector Form A, M12 x 1 circular connector, 4-pin
Explosion protection (option)
Intrinsically safe to Ex-i (ATEX) gas/dust, per Directive 94/9/EC
Marking: II 1G Ex ia IIC T* or II 2D Ex iaD 21 T*
Safety-related maximum values for the current loop (+ and - connections):
Ui = DC 30 V
C
i
= 6.2 nF I
i
= 120 mA L
i
= 110 µH Pi = 800 mW
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 RTDs 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.
Load diagram
3. Specifications
The permissible load depends on
the loop supply voltage.
Voltage U
B
in V
Load R
A
in
Ω
0
10
24
30
36
1182
909
636
For setting the measuring range see chapter "7. Configuration of model TR30-W".