WIKA PG28 Betriebsanleitung Seite 17

5. Commissioning, operation / 6. Faults
5.3 External zero point setting (if available)
If there is a deviation of the pointer from the zero point (in depressurised
condition), a zero point setting can be carried out through turning the
hexagon nut on the rear of the instrument. For setting the hexagon nut, a
spanner with a spanner width of 7 mm is needed.
The setting range of the pointer is ±25°.
5.4 Commissioning, operation
Check the sealing at the process connection over the entire scale
„
range before commissioning.
Pressure surges must be avoided at all costs, open the shut-off
„
valves slowly.
After installation, open the vent valve (if available) or set from CLOSE
„
to OPEN. The version of the vent valve depends on
the model and can deviate from the illustration shown!
Observe the effects on the ingress protection. For
information on the ingress protection, see Technical information
IN 00.18.
The instrument must not be subjected to any external loading (e.g.
„
use as a climbing aid, support for objects).
WIKA operating instructions pressure gauge, model PG28
EN
17