WIKA PG43SA-S Betriebsanleitung Seite 12

5. Commissioning, operation
On removal from the packaging, and during mounting, particular
„
care must be taken to avoid damage and any mechanical defor-
mation to the diaphragm.
EN
Model PG43SA-S with vent hole: Check the zero point. In case
„
of a zero offset, carry out a zero point setting. See chapter 5.7
"External zero point setting".
Model PG43SA-S with vent valve: Open the vent valve for
„
pressure compensation and leave it open during the measure-
ment in order to ensure a correct pressure display. See chapter
2.3 "Model PG43SA-S with vent valve".
Model PG43SA-C with vent valve: For pressure compensation,
„
open the vent valve for a short time and then close it again directly.
The vent valve remains closed during operation. See chapter 2.4
"Model PG43SA-C with vent valve".
5.2 Installation
Do not damage the diaphragm; scratches on the diaphragm (e.g.
„
from sharp-edged objects) are the main causes of corrosion.
For sealing, choose appropriate seals.
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For flange mounting, only use sealings with a sufficiently large
„
inner diameter and centre them; contact with the diaphragm leads
to measuring deviations.
When using soft or PTFE sealings, observe the instructions of the
„
sealing manufacturer, particularly with regard to tightening torque
and load cycles.
For installation, in accordance with the fitting and flange standards
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the appropriate fastenings, such as screws and nuts, must be
used.
Model PG43SA-S with vent hole: The vent hole at the underside of
„
the case must not be closed.
Nominal position per EN 837-3 / 9.6.6 figure 7: 90° ( ⊥ ) (only
„
applies to model PG43SA-S)
12
WIKA operating instructions pressure gauge, PG43SA-S, PG43SA-C