Switch Contacts; Electromagnetic Compatibility - WIKA 432.50.100 Mode D'emploi

5. Switch contacts

5. Switch contacts
EC-type examination certificates
Standard version Model 831.XX

GB
PTB 99 ATEX 19 X (Appendix ) and ZELM 03 ATEX 018 X (Appendix 4)
Depending on the number of switches and on the case diameter either
Model SJ-N... or Model SJ3.5-...-N... is used.
Safety pattern version Models 831.XX - SN or - S1N

PTB 00 ATEX 049 X (Appendix 3) and ZELM 03 ATEX 018 X (Appendix 4)
Depending on the number of switches and on the case diameter either
Models SJ -SN..., SJ -S1N..., SJ 3.5-SN.. or SJ 3.5-S1N... are used.
The built-in sensor type is stated on the product label of the pressure gauge.
Wiring details
The electrical connections must only be made by qualified skilled personnel

Connection of the switches via screw terminals in the terminal box

Conductor cross section max. 1.5 mm

The terminal assignment is stated on the product label of the pressure gauge

The gauges must be connected to the equipotential bonding of the plant

The permissible limits of U
depend on the sensor type. They can be taken from the corresponding EC-type
examination certificates. (The sensor type is stated on the connection plate of
the pressure gauge.)
Suitable switch amplifiers are e.g.:
Circuit
(s. Ex-certific.)
Model 1
Model 2

Electromagnetic compatibility

EMC to EN 60 947-5-.
The instruments are to be protected against strong electromagnetic fields.
10
, I and P
i i
Sensor type Model designation
Fa. Pepperl & Fuchs
standard KFD-SR-Ex1
standard KFD-SR Ex
standard KFA6-SR-Ex1
standard KFA6-SR-Ex
SN-sensors KFD-SH-Ex1
SN-sensors KHA6-SH-Ex1
WIKA Operating instructions pressure gauges Model 4 with 831 per ATEX

for the intrinsically safe supply circuits
i
EC-type exami-
nation certificate
PTB 00 ATEX 080
PTB 00 ATEX 080
PTB 00 ATEX 081
PTB 00 ATEX 081
PTB 00 ATEX 04
PTB 00 ATEX 043
WIKA-
Model
904.31
904.3
904.8
904.9
904.33
904.30