Commissioning; Function Check; Sensor Polarization - Endress+Hauser Oxymax COS22 Kurzanleitung

Oxymax COS22/22D
10

Commissioning

10.1

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 that the cleaning medium (e.g. water or
air) is connected correctly.
WARNING
L
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.
10.2

Sensor 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.
Commissioning
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