Alarm Contacts - WIKA 632.51 Mode D'emploi

3. Technical data ... / 4. Alarm contacts
Installation
Nominal position per EN 837-3 / 9.6.6 Figure 7: 90° (
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Pressure connection: lower mount (LM)
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In order to avoid any additional heating, the instruments must not be
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exposed to direct solar irradiation while in operation!
Permissible vibratory stress at the mounting location
As a matter of principle the instruments should only be mounted at loca-
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tions without vibratory stresses
Where required, a decoupling from the mounting location can be achieved
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e.g. by a flexible connecting line from the measuring point to the pressure
gauge and mounting via a measuring instrument bracket.

4. Alarm contacts

EC-type examination certificates
Standard version Model 831.XX
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PTB 99 ATEX 19 X (enclosure ) and ZELM 03 ATEX 018 X (enclosure 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
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PTB 00 ATEX 049 X (enclosure 3) and ZELM 03 ATEX 018 X (enclosure 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 should be made by qualified electricians
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Connection of the switches via screw terminals in the terminal box
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Conductor cross section max. 1.5 mm
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The terminal assignment is stated on the connection plate at the
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pressure gauge
The instruments are to be included in the equipotential bonding of the plant
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WIKA Operating instructions pressure gauges Model 63.51 with 831 per ATEX
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