Additional Pressure Connections; Adjustable Measuring Span From Outside (Optional) - Obsolete 732.51.2170 Instructions D'utilisation

5. Additional pressure connections / 6. Adjustable measuring span
5. Additional pressure connections (see drawing page 10)
T G ¼ female ? on minus media chamber e.g. to connect a pressure switch or safety valve
T G ¼ female @ on minus media chamber e.g. to connect a pressure transmitter
Model ECO-1, C-10 resp. IS 10
GB
T G ¼ female A on plus media chamber for recalibration

6. Adjustable measuring span from outside (optional)

Depending on the measuring system of the differential pressure gauge, the measuring span
may be adjusted to the stated measuring range limits. Ideally, the adjustment should be
made on the test bench.
Measuring range limits
(are also stamp-marked
on the circumference
of the measuring system)
Segment
Handling information:
1. Remove plastic cover (on the side of the case at 5 o'clock)
2. Insert a hexagon socket screw driver with spherical head (flats 3 mm) into the funnel-
shaped guide and decrease / increase the measuring range (span) as desired by means
of right / left turns.
3. If required, the zero point can be corrected via the adjustment pointer, then the
instrument is to be pressurised until the instrument's pointer is at the upper limit of the
measuring range. The upper limit of the measuring range is to be checked with a
pressure standard. This process is to be repeated until the upper limit of the measuring
range corresponds to the desired nominal pressure.
6
Measuring system
150 mbar
300 mbar
400 mbar
600 mbar
1000 mbar
1600 mbar
2500 mbar
Pullrod
Segment tail
Regulating screw
turning clockwise:
smaller measuring range
Flats 3
turning anticlockwise:
larger measuring range
WIKA Operating instructions compact differential pressure gauge
Adjustable measuring ranges
from to
120 mbar - 200 mbar
200 mbar - 400 mbar
300 mbar - 600 mbar
500 mbar - 1000 mbar
780 mbar - 1250 mbar
1250 mbar - 2000 mbar
1950 mbar - 2850 mbar