EN
14073045.06 10/2020 EN/DE/FR/ES
WIKA operating instructions model TR25 (Ex i)
18
5. Commissioning, operation
5.2.2 Electrical data with built-in transmitter or digital display
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 case: 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.
5.2.3 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 instruments. The requirements in accordance
with IEC/EN 60079-27, and the connection conditions of the approvals in accordance with
FISCO, apply.
5.3 Tightening torques
5.3.1 Tightening torques between cable gland and connection head
■
Junction between cable gland and connection head
Thread
Tightening torques
M20 x 1.5
12 Nm
■
Junction between cable and cable gland
Screw the pressure screw tightly into the adapter piece (use appropriate tools!)
5.3.2 Tightening torques between connection head and neck tube
Thread
Tightening torques
Connection head material
Aluminium
Stainless steel
M24 x 1.5 with pressure screw
27 Nm
30 Nm
Summary of Contents for TR25 (Ex i)
Page 36: ...EN 14073045 06 10 2020 EN DE FR ES WIKA operating instructions model TR25 Ex i 36 ...
Page 66: ...DE WIKA Betriebsanleitung Typ TR25 Ex i 66 14073045 06 10 2020 EN DE FR ES ...
Page 96: ...FR 14073045 06 10 2020 EN DE FR ES WIKA mode d emploi type TR25 Ex i 96 ...
Page 126: ...14073045 06 10 2020 EN DE FR ES WIKA operating instructions model TR25 Ex i 126 ...
Page 127: ...14073045 06 10 2020 EN DE FR ES WIKA operating instructions model TR25 Ex i 127 ...