WIKA PGS43.160 - Handbuch (Seite 10)

10
080
4
.03 1
/
009 GB/D/F/E
GB
WIKA Operating instructions pressure gauges Model 4 with 831 per ATEX
5. Switch contacts
5. Switch contacts
EC-type examination certificates
Standard version Model 831.XX
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
i
, I
i
and P
i
for the intrinsically safe supply circuits
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.:







Electromagnetic compatibility
EMC to EN 60 947-5-.
The instruments are to be protected against strong electromagnetic fields.
Circuit Sensor type Model designation EC-type exami- WIKA-
(s. Ex-certific.) Fa. Pepperl & Fuchs nation certificate Model
Model 1 standard KFD-SR-Ex1 PTB 00 ATEX 080 904.31
standard KFD-SR Ex PTB 00 ATEX 080 904.3
Model 2 standard KFA6-SR-Ex1 PTB 00 ATEX 081 904.8
standard KFA6-SR-Ex PTB 00 ATEX 081 904.9
SN-sensors KFD-SH-Ex1 PTB 00 ATEX 04 904.33
SN-sensors KHA6-SH-Ex1 PTB 00 ATEX 043 904.30