KROHNE SMARTSENS ORP 8510 EN - Manual (Page 21)

SERVICE
5
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SMARTSENS ORP 8510
www.krohne.com 11/2013 - 4002547502 - MA SMARTSENS ORP 8510 R02 en
Service
5.1 Maintenance
5.1.1 Cleaning
• Slight dirt residues or dust: Rinse the sensor tip with demineralised water and clean it with a
soft tissue.
• Oily and greasy coatings: Remove with a warm soap solution and rinse with demineralised
water.
• Hardness deposits or metal hydroxide deposits: Soak the sensor tip including diaphragm in
10% citric acid or hypochloric acid for a couple of minutes and rinse the complete glass shaft
of the sensor with demineralised water.
• Biological fouling: Soak the sensor tip including diaphragm in 10 % pepsin solution for
minimum 3 hours and afterwards rinse the complete glass shaft of sensor with demineralised
water.
5.1.2 Aging and re-calibration
During operation, but already during storage, ORP sensors age due to poisoning effects of the
inner buffer system. Therefore it is important to re-calibrate the sensor in regular intervals.
Consider status messages and diagnostic information.
5.2 Availability of services
The manufacturer offers a range of services to support the customer after expiration of the
warranty. These include repair, maintenance, technical support and training.
INFORMATION!
Recalibrate the sensor after each cleaning procedure
INFORMATION!
The lifetime expectation depends heavily on the application. The right choice of the sensor type is
very important.
INFORMATION!
For more precise information, please contact your local sales office.
.book Page 21 Monday, November 18, 2013 4:12 PM