10
Assembly
• Possible mounting angle 15° above horizontal:
• Mounting angle 360° (i.e. even upside down)
for special sensors only containing thickened
electrolytes which thus cannot flow.
15°
15°
Function Description
SensoGate® WA 130 H Retractable Fitting
The pneumatically operated retractable fitting allows calibrating or adjusting the measuring
system and cleaning the sensor in the running process. For that purpose, the retractable fitting
can be moved between two positions using compressed air:
• PROCESS position:
Sensor located in the process medium.
• SERVICE position:
Sensor located in the calibration chamber.
In SERVICE position you can clean, maintain, calibrate or adjust the measuring system.
A control unit, such as the Unical® 9000, moves the probe to SERVICE or PROCESS position and
leads different calibration and/or cleaning liquids to the sensor located in the calibration chamber.
For operation of the SensoGate®, you must connect control air, rinsing or calibration media, and
the electrical check-back signal for display of the probe position with the SensoGate®.
There are two basic options for this.
In conjunction with the UNICAL® or UNICLEAN® electro-pneumatic controllers and the PROTOS®
measuring system, air pressure, rinsing, or calibration media, and the check-back cable are com-
bined in a single hose with just one plug connection (multiplug, in the following referred to as
media connection).
This media connection is installed on the SensoGate® together with the outlet hose.
When you do not use a probe controller (UNICAL® or UNICLEAN® and the PROTOS® measuring
system), you can connect the supply lines for control air, rinsing or calibration media and elec-
trical check-back with a free hose connection via an adapter (ZU 0742 / ZU 0733 / ZU 0734, see
These liquids leave the calibration chamber through an outlet hose, i.e. they are displaced from
the calibration chamber by following liquids or by compressed air.
To replace the sensor, you must move the retractable fitting into SERVICE position.
With Unical® 9000 probe controller, all media, control air and the check-back cable for position
indication of the probe are connected to the retractable fitting through a compact connector
(multiplug).
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