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In SERVICE position the measuring system can be calibrated or adjusted or the sensor can be
cleaned. Through the optional rinse connection, different calibration and/or cleaning liquids can
be transferred to the sensor located in the calibration chamber. These liquids leave the calibration
chamber through an outlet hose, i.e. they are displaced from the calibration chamber by following
liquids.
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 131 H
The sensor lock-gate allows calibrating or adjusting the measuring system and cleaning the
sensor in the running process. For that purpose, the sensor lock-gate 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.
The fitting is equipped with push-in connectors for the pressure hoses (outer dia. 6mm)
introducing the compressed air required for controlling the fitting.
P
indicates the travel movement to PROCESS position (measuring).
S
indicates the travel movement to SERVICE position (rinsing, calibration, service).
Version without pneumatic limit signal
Version with pneumatic limit signal
Check-back
PROCESS
Check-back
SERVICE
Control air
PROCESS
Control air
SERVICE
Control air
SERVICE
Control air
PROCESS
