Endress+Hauser Liquiline CM442R, Руководство по эксплуатации

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Liquiline CM442R/CM444R/CM448R Maintenance
Hauser
133
12.2 Cleaning
12.2.1 External display (in installed state)
Only clean the front of the housing with commercially available cleaning agents.
The front is resistant to the following as per DIN 42 115:
• Ethanol (short periods)
• Diluted acids (max. 2% HCl)
• Diluted bases (max. 3% NaOH)
• Soap-based household cleaners
NOTICE
Prohibited cleaning agents
Damage to the housing surface or housing seal
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For cleaning purposes, never use concentrated mineral acids or bases.
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Never use organic cleaners such as acetone, benzyl alcohol, methanol, methylene chloride,
xylene or concentrated glycerol cleaner.
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Never use high-pressure steam for cleaning purposes.
12.2.2 Digital sensors
CAUTION
!
The cleaning system is not switched off during calibration or maintenance activities
Risk of injury due to medium or cleaning agent
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If a cleaning system is connected, switch it off before removing a sensor from the medium.
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If you are not switching off the cleaning system because you wish to test the cleaning
function, wear protective clothing, goggles and gloves or take other appropriate measures.
1. If an error occurs or the maintenance schedule stipulates that the sensor has to be
replaced, use a new sensor or a sensor that has been precalibrated in the laboratory.
A sensor is calibrated in the laboratory under optimum external conditions, thereby
ensuring better quality of measurement.
2. Remove the sensor to be serviced and install the new sensor.
3. You must perform calibration if you use a sensor that is not precalibrated.
4. The sensor data are automatically accepted by the transmitter. A release code is not
required.
5. Measurement is resumed.
6. Take the used sensor back to the laboratory. In the laboratory you can get the sensor ready
for reuse while ensuring the availability of the measuring point.
– Clean the sensor. For this purpose, use the cleaning agent specified in the sensor
manual.
– Inspect the sensor for cracks or other damage.
– If no damage is found, regenerate the sensor. Where necessary, store the sensor in a
regeneration solution ( → sensor manual).
– Recalibrate the sensor for reuse.