EN
11. Specifications
14147933.02 10/2018 EN/DE
WIKA operating instructions model T16
30
Models T16.x-AI
The intrinsically safe sensor circuit (optional 2-wire, 3-wire or 4-wire configuration) for both
versions is intended for the supply of equipment in areas with 1G or 1D requirements.
The version T16.H-AI has been designed for installation in cases or connection heads in
areas with 1G, 2G or 1D, 2D requirements.
The version T16.R-AI is intended for installation in a case which guarantees at least IP20
ingress protection (2G application or installation outside the hazardous area) or IP6X
(2D application).
Ambient temperature range
Application Ambient temperature range
Temperature class Power P
i
Group II
-40 °C (-40 °F) ≤ T
a
≤ +85 °C (+185 °F)
T4
800 mW
-40 °C (-40 °F) ≤ T
a
≤ +70 °C (+158 °F)
T5
800 mW
-40 °C (-40 °F) ≤ T
a
≤ +55 °C (+131 °F)
T6
800 mW
Group IIIC
-40 °C (-40 °F) ≤ T
a
≤ +40 °C (+104 °F)
N / A
750 mW
-40 °C (-40 °F) ≤ T
a
≤ +75 °C (+167 °F)
N / A
650 mW
-40 °C (-40 °F) ≤ T
a
≤ +85 °C (+185 °F)
N / A
550 mW
N / A = not applicable
11.2
Safety-related characteristic values for models T16.x-AN, T16.x-AE
Power and signal circuit (4 ... 20 mA loop)
Protection level Ex nA IIC/IIB/IIA
Parameters
Models T16.x-AN, T16.x-AE
Gas hazardous application
Terminals
+ / -
Voltage U
i
DC 35 V
Current I
i
21.5 mA
Sensor circuit
Protection level Ex nA IIC/IIB/IIA
Parameters
Models T16.x-AN, T16.x-AE
Terminals
1 - 2
Power P
o
2.575 V x 0.1 mA → 0.256 mW
DC 2.575 V
0.1 mA
