WIKA 851 - Manual (Page 10)

GB
2435182.03 12/2010 GB/D/F/E
WIKA operating instructions electronic contact, model 830 E 10
6. Commissioning, operation
6.1 Mechanical connection
In accordance with the general technical regulations for pressure and tempera-
ture measuring instruments (e.g. EN 837-2 or EN 13190). When screwing the
gauges in, the force required to do this must not be applied through the case
or the cable terminal box, but only through the spanner flats provided for this
purpose and using a suitable tool.
6. Commissioning, operation
Installation with
open-ended spanner
With safety pressure gauges (see dial symbol k) ensure that the free space
behind the blow-out back is at least 15 mm.
Special requirements for the installation point
To avoid, amongst other things, switch signal "chatter", it must be ensured
that the instruments are mounted free of vibration. If the measuring point is not
adequately stable, a measuring instrument holder should be used for fastening
(and possibly via a flexible capillary).
If vibrations cannot be avoided by means of suitable installation, instruments
with liquid filling should be used.
The instruments should be protected against coarse dirt and wide fluctuations in
ambient temperature.
6.2 Electrical connection
The electrical connection must only be made by qualified skilled personnel. The
permissible electrical data, connection details and switching functions are given
on the product label affixed to the instrument.
The connection terminals are appropriately marked.
The instruments must be connected to the equipotential bonding of the plant.
The electrical connection is made via a DIN EN 175301-803 connector.