WIKA 632.51+8xx - Manual (Page 7)

WIKA Operating instructions pressure gauges Model 63.51 with 831 per ATEX 7
11059738
11/
008 GB/D/F
GB
Installation
n Nominal position per EN 837-3 / 9.6.6 Figure 7: 90° ( )
n Pressure connection: lower mount (LM)
n In order to avoid any additional heating, the instruments must not be
exposed to direct solar irradiation while in operation!
Permissible vibratory stress at the mounting location
n As a matter of principle the instruments should only be mounted at loca-
tions without vibratory stresses
n Where required, a decoupling from the mounting location can be achieved
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
n Standard version Model 831.XX
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.
n Safety pattern version Models 831.XX-SN or -S1N
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
n The electrical connections should be made by qualified electricians
n Connection of the switches via screw terminals in the terminal box
n Conductor cross section max. 1.5 mm
n The terminal assignment is stated on the connection plate at the
pressure gauge
n The instruments are to be included in the equipotential bonding of the plant
3. Technical data … / 4. Alarm contacts