Wika 632.51+8xx Bedienungsanleitung PDF herunterladen (Seite 7)

WIKA Operating instructions pressure gauges Model 632.51 with 831 per ATEX

11059738 11/2008 GB/D/F

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 2219 X (enclosure 2) and ZELM 03 ATEX 0128 X (enclosure 4)

Depending on the number of switches and on the case diameter either

Model SJ2-N … or Model SJ3.5- … -N … is used.

n Safety pattern version Models 831.XX-SN or -S1N

PTB 00 ATEX 2049 X (enclosure 3) and ZELM 03 ATEX 0128 X (enclosure 4)

Depending on the number of switches and on the case diameter either

Models SJ 2-SN …, SJ 2-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

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Wika 632.51+8xx Bedienungsanleitung Seite 7