Endress+Hauser Memosens COS51E, Operating Instructions Manual

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Memosens COS51E Commissioning
Hauser 23
7 Commissioning
7.1 Function check
Prior to initial commissioning, ensure that:
• Is the sensor correctly installed?
• Is the electrical connection correct?
If using an assembly with automatic cleaning function:
‣
Check that the cleaning medium (water or air, for example) is connected correctly.
L
WARNING
Escaping process medium
Risk of injury from high pressure, high temperatures or chemical hazards!
‣
Before applying pressure to an assembly with cleaning system, ensure that the system
has been connected correctly.
‣
If you cannot reliably establish the correct connection, do not install the assembly in
the process.
1. At the transmitter, enter all the settings specific to the parameters and measuring
point. These include the air pressure during calibration and measurement or the
salinity, for instance.
2. Check whether a calibration/adjustment is necessary.
The oxygen measuring point is then ready to measure.
After commissioning, maintain the sensor at regular intervals to ensure reliable
measurement.
• Operating Instructions for Memosens COS51E, BA02146C
• Operating Instructions for the transmitter used, such as BA01245C if using the
Liquiline CM44x or Liquiline CM44xR.
7.2 Sensor polarization and preparation for calibration/
adjustment
NOTICE
Incorrect measurements due to ambient influences!
‣
It is essential to avoid strong sunlight on the sensor.
‣
Comply with the instructions for commissioning in the Operating Instructions of the
transmitter used.
The sensor has been tested at the factory to ensure it is functioning correctly and is
delivered ready for operation.
To prepare for measuring and/or calibration:
1. Remove the sensor protective cap.
2. Expose the sensor, which is 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 water surface. However, the sensor membrane must remain
dry during calibration. Therefore, avoid direct contact with the water surface.
3. Connect the sensor to the transmitter.
4. Switch on the transmitter.
 When the sensor is connected to the transmitter, polarization takes place
automatically once the transmitter has been switched on.