Commissioning, Operation; Mechanical Connection - WIKA 432.50.100 Betriebsanleitung

6. Commissioning, operation

6. Commissioning, operation
Personnel: Skilled personnel
Before commissioning the instrument, the conditions from chapter 2.7 "Special
conditions for safe use (X conditions)" must be fulfilled.

Mechanical connection

In accordance with the general technical regulations for pressure measuring
instruments (e.g. EN 837-2 "Selection and installation recommendations for
pressure gauges").
When screwing the instruments in, the force required for sealing must not be
applied through the case, but only through the spanner flats provided for this
purpose, and using a suitable tool.
Flange connection
1) The screw connection of the flange must
not be opened
For parallel threads, use flat gaskets, lens-type sealing rings or WIKA profile
sealings at the sealing face . With tapered threads (e.g. NPT threads), sealing is
made in the threads , using a suitable sealing material (EN 837-2).
The tightening torque depends on the sealing used. In order to orientate the
measuring instrument so that it can be read as well as possible, a connection with
LH-RH adjusting nut or union nut should be used. When a blow-out device is fitted
to an instrument, it must be protected against being blocked by debris and dirt.
Installation
Nominal position per EN 837-3 / 9.6.6 image 7: 90° ( ⊥ ), if not stated otherwise
„
in the order documentation.
WIKA operating instructions pressure gauge model 4 per ATEX
1)
Spanner flats
Sealing face

Installation with
open-ended
spanner
Sealing in the
thread

EN
17