Endress+Hauser Oxymax COS22D, Руководство по эксплуатации

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Oxymax COS22D Commissioning
Hauser
23
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
Measurement errors due to environmental conditions
►
Urgently protect the sensor from strong sunlight.
►
Make sure you comply with the instructions for commissioning and calibration in the Operating
Instructions of the transmitter.
The sensor was tested in the factory for perfect functionality and is supplied ready for operation.
To prepare for calibration, proceed as follows:
1.
Remove the sensor protective cap.
2. Place the externally dry sensor in atmospheric air. The air should be saturated with water vapour.
Therefore, install the sensor as close to the water surface as possible. When calibrating the sensor
membrane, make sure the membrane remains dry. Therefore, avoid any direct contact with the
water surface.
3. Connect the sensor to the transmitter and switch on the transmitter.
4. Switch-on the transmitter.
If you connect the sensor to the transmitter, polarization is automatically performed after
switching on the transmitter.
5. Wait for the polarization time to end.