SensoGate WA131M
31
4
5
1
3
5
6
7
06.
Disconnect the cable bushing
(3)
of the sensor cable
(7)
fr
om the sensor head
(6)
.
07.
R
elease the sensor
(5)
using the spanning wrench
(4)
(
A/F 19 mm). R
ecommended tools: Sensor
spanning wrench ZU0647
08.
P
ull out the sensor
(5)
.
09.
If the sensor glass is broken, check the immersion tube gasket for damage and replace it if
necessary
.
Immersion Tube: Removal, p. 38
5.3.6 Liquid-Electrolyte Sensor: Installation
Note:
To ensure that the electrolyte flows from the reference electrode to the process medium, the air
pressure in the pressure chamber must be 0.5 t
o 1 bar abo
ve that of the process medium.
1
2
3
4
01.
Move the SensoGate WA131M into the SERVICE position.
Moving into the SERVICE Position, p. 26
02.
Check outlet and leakage bores for escaping process medium. If process medium escapes, depres-
surize the process and perform troubleshooting.
03.
Loosen the small c
oupling nut
(1)
by a few rotations; do not loosen completely.
04.
Fully loosen the large coupling nut
(2)
and pull off the entire unit.
05.
Remove the watering cap from the sensor tip and r
inse the sensor
(3)
with water.
06.
Remove the closur
e of the filling hole
(4)
of the sensor
(3)
.
Note:
In the case of inclined installation, turn the electrolyte filling hole towards the top to prevent
electrolyte from flowing out during operation of the SensoGate WA131M. Observe any deviating di-
rection of installation specified by the sensor manufacturer.
07.
P
ush in the sensor
(3)
.