EN
14073045.04 03/2019 EN/DE
WIKA operating instructions model TR25 (Ex i)
25
9.2 Electrical data for built-in transmitters or digital displays
For the sensor circuit, the values mentioned in 8.1 apply.
Signal circuit in Ex ia or ib, IIC intrinsic safety ignition protection
U
i
= depending on the transmitter/digital display
I
i
= depending on the transmitter/digital display
P
i
= in the housing: depending on the transmitter/digital display
C
i
= depending on the transmitter/digital display
L
i
= depending on the transmitter/digital display
The transmitters and digital displays used must have their own certification in accordance
with IEC/EN. The installation conditions and electrical connection values can be seen from
the relevant approvals and must be observed.
9.3 Electrical data with built-in transmitter in accordance with the FISCO model
The transmitters/digital displays used for the application range in accordance with the
FISCO model are considered FISCO field units. The requirements in accordance with
IEC/EN 60079-27, and the connection conditions of the approvals in accordance with
FISCO, apply.
9. Electrical connection values