WIKA 732.15.160 Betriebsanleitung Seite 7

4. Differential pressure gauge
1. The span adjustment, situated at the ‚4 o'clock' point on the instrument case, is accessible
through the case by removing the cover cap.
2. Charge the instrument to the desired nominal pressure.
3. To set the pointer to the span value, using an allen key (size 3 mm) inserted into the funnel,
turn it either clockwise (reduce the measuring range) or anticlockwise (expand the measu-
ring range). The gauge will then be fully adjusted to the required measuring range.
4. If the gauge is equipped with a transmitter Model 89x.44, then this procedure will also
adjust the output signal to the new measuring range.
5. After completing the adjustment the equipment should be resealed with the cover cap.
Interchangeable scales (optional)
1. Loosen the clamp clip on the case of the
differential pressure gauge and remove the
cover ring complete with the lens.
2. Loosen and remove the knurled screw.
3. Remove all three scales, place the desired
scale on top and put them back in place.
4. Reinsert the knurled screw and tighten it.
Mount the cover ring and lens and fasten
the clamp clips again.
Additional pressure connections
Three additional G ¼ female threads are
„
available on the minus measurement chamber
(the right measuring cell flange when viewed
from the back) e.g. for connecting a pressure
switch, safety valve or A-10 Cryo or IS-20
transmitters
Two G ¼ female threads are available on
„
the plus measurement chamber (the left cell
flange when viewed from the back) e.g. for
recalibration
WIKA operating instructions differential pressure gauge models 712.15.160, 732.15.160




Legend
 Clamp clip
 Cover ring
 Knurled screw
 Scales
G 1/4 pressure connections
Mounting holes M8
G 1/4 pressure connections
GB
7