External Sensor Cleaning; Replacing The Membrane Cap - Endress+Hauser COM280 Manuel

COM280

13.2 External sensor cleaning

Fouling
Lime deposits
Greases/oils
"
Caution!
After cleaning, rinse the sensor thoroughly with deionized water and then calibrate it again.

13.3 Replacing the membrane cap

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Warning!
The electrolyte solution irritates the skin and eyes. For this reason:
• Always wear suitable protective gloves and goggles/face mask.
• Wash skin which has come into contact with the electrolyte solution thoroughly with plenty
of water and change wetted clothes immediately.
• If electrolyte gets into your eye, rinse thoroughly with plenty of water and consult a doctor.
• Observe the instructions on the safety data sheet.
The electrolyte and membrane cap have to be replaced in the following situations:
• in the event of calibration errors resulting from a contaminated membrane
• if the membrane is damaged
• if the electrolyte is used up
• if the measuring instrument reports a leak
Unscrew the basket protector and
membrane cap.
Endress+Hauser
Cleaning
Immerse the sensor into 20% acetic acid for 1 minute.
Rinse the sensor with a cleaner containing a surfactant.
Rinse the sensor head with deionized
water.
Dry the counterelectrode carefully
with a lint-free paper towel.
Maintenance
27