Span Adjustment - WIKA 712.15.100 Manual De Instrucciones

4. Commissioning, operation

Span adjustment

EN
Turn clockwise:
Turn anticlockwise: Larger measuring range
1. The span adjustment, situated at the 4 o'clock point on the case circumference, is acces-
sible by removing the sealing cap.
2. Pressurise the instrument to the desired nominal pressure.
3. Insert a socket-head screwdriver (SW 3 mm) into the funnel guide, and adjust the pointer
to the end value by turning it clockwise (smaller measuring range) or anti-clockwise (larger
measuring range). The instrument will then be fully adjusted to the required measuring
range.
4. If the instrument is equipped with a model 89x.44 transmitter, then this procedure will also
adjust the output signal to the new measuring range.
5. After completing the adjustment the instrument should be re-sealed with the sealing cap.
Additional process connections
Three additional G ¼ female threads on
■
the minus media chamber (right measu-
ring cell flange when viewing the instru-
ment from behind), e.g. for connecting a
pressure switch, safety valve or a model
A-10 or IS-3 pressure sensor
Two G ¼ female threads on the plus
■
media chamber (left measuring cell
flange when viewing the instrument from
behind), e.g. for recalibration
Differential pressure gauge models 712.15.100, 732.15.100, optional for hazardous areas
14
Span adjustment
Socket-head screwdriver
(included in delivery)
Smaller measuring range
Sealing cap for span
adjustment
Mounting holes
M8
Process connections G 1/4
Process connections
G 1/4