Zero Point Setting (Not For Pgt23.063) - WIKA PGT23.1 0 Serie, PGT26.1 08 Serie Betriebsanleitung

5. Commissioning, operation
Fully loosen the screws on the cable cover cap with a slotted screwdriver (0.6 x 3.5 mm)
„
and remove them.
Pull the cable cover, along with the socket insert, out from the cable socket baseplate
„
(joined permanently with the instrument).
Take the cable cover cap and push the socket insert out, downwards, completely through
„
the cable cap.
Pin assignment cable socket
2-wire system
e.g. 4 ... 20 mA
Do not use this
terminal
U +/I+
B
Supply
voltage
+0V/GND
Evaluation
Terminals 3 and 4: For internal use only
(display)
Terminals 5 and 6: Reset zero point
Pin assignment model PGT23.063
Cable Connector Assignment
red Pin 1
black Pin 4
brown Pin 2
- - - Pin 3

5.3 Zero point setting (not for PGT23.063)

In most cases, the zero point should only be checked and adjusted after the system has
been depressurised. Instruments whose scale does not start at atmospheric pressure the
pressure gauge must be pressurised with the pressure value of the scale start. With differen-
tial pressure gauges, the setting of the zero point should be made by opening the pressure
equalisation valve under static load.
Mechanical zero point
If there is a deviation from the zero point (in depressurised
condition), the zero point setting can be carried out via the built-
in adjustable pointer. For this, remove the bayonet ring including
the window and the seal from the case.
By turning the slotted screw of the adjustable pointer, a mechan-
ical zero point setting can be carried out.
Pressure gauges with output signal, optionally for hazardous areas
U
+/I+
B
0 V/I-
n.c.
n.c
3-wire system:
e.g. 0 ... 20 mA / 0 ... 10 V
Ground, connect-
ed to case
Supply
voltage
U +/I+
B
I /U
out out
+0V/I-
Evaluation
(display)
Terminals 4, 5 and 6:
for internal use only
Slotted screw
19
EN