Commissioning
18
Hauser
6
Commissioning
6.1
Function check
Before first commissioning, check if:
• the sensor is correctly installed
• the electrical connection is correct.
If using an assembly with automatic cleaning, check the correct connection of the cleaning agent (e.g.
water or air).
WARNING
!
Escaping process medium
Risk of injury from high pressure, high temperatures or chemical hazards
►
Before applying compressed air to an assembly with cleaning facility, make sure the connections are
correctly fitted.
►
Do not install the assembly in the process if you cannot make the correct connection reliably.
6.2
Polarization
NOTICE
Incorrect measurements due to ambient influences
►
Be absolutely certain to avoid direct sunlight on the sensor.
►
Make sure you comply with the instructions for commissioning in the Operating Instructions of the
transmitter.
The sensor has been tested at the factory for proper function and is shipped in ready-to-operate
condition.
To prepare for the calibration, carry out the following steps:
1.
Pull off the sensor protection cap.
2.
Expose the sensor, which should be dry on the outside, to the air atmosphere. The air should be
saturated with water vapor. Therefore, install the sensor as close as possible to a surface of water.
However, the sensor membrane must remain dry during calibration. Therefore, avoid direct
contact with the surface of water.
3.
Connect the sensor to the transmitter.
4.
Switch on the transmitter.
When the sensor is connected to the transmitter, the polarization takes place automatically after
the power-up of the transmitter.
5.
Wait for the polarization time to run out.
