Electromagnetic Compatibility - WIKA 5 Instructions D'utilisation

4. Alarm contacts
The permissible limits for 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.)
GB
Suitable switch amplifiers are e.g.:
Circuit Sensor type Model designation
(s. Ex-certific.)
Model 1 standard
standard
Model 2 standard
standard
SN-sensors
SN-sensors

Electromagnetic compatibility

EMC according to EN 60 947-5-2.
The instruments are to be protected against strong electromagnetic fields.
To set desired value indicator
The desired value indicators for the alarm contacts are adjustable over the
adjustment lock in the window with the aid of adjustment key (included in deli-
very; to be found on standard gauges on the outside edge of the junction box).
Desired value
indicators
(red set pointer)
Adjustment lock
The desired value indicators for the alarm contacts are adjustable over the full
range of the instrument. Switching points shall be set in the ranges between
10 % und 90 % of the scale, to ensure switching accuracy and long life of the
mechanical measuring system.
8 WIKA Operating instructions pressure gauges Model 5 with 831 per ATEX
, I and P of the intrinsically safe supply circuits
i i i
EC-type exami-
nation certificate
Fa. Pepperl & Fuchs
KFD2-SR2-Ex1 PTB 00 ATEX 2080
KFD2-SR2 Ex2 PTB 00 ATEX 2080
KFA6-SR2-Ex1 PTB 00 ATEX 2081
KFA6-SR2-Ex2 PTB 00 ATEX 2081
KFD2-SH-Ex1 PTB 00 ATEX 2042
KHA6-SH-Ex1 PTB 00 ATEX 2043
WIKA-
Model
904.31
904.32
904.28
904.29
904.33
904.30
Adjustment key
removable