KROHNE OPTISYS CL 1100 EN - Manual (Page 34)

6
SERVICE
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OPTISYS CL 1100
www.krohne.com 01/2013 - 4002492301 - MA OPTISYS CL 1100 R02 en
6.1.2 Aging and re-calibration
The sensor has to be re-calibrated in regular intervals due to aging effects of the reference
electrode.For detailed information refer to
Calibration on page 22. We recommend re-
calibrating the sensor every 3 months.
When the sensor becomes too old to provide reliable measurements, the signal converter
displays an error message after the calibration procedure. In this case, the sensor has to be
exchanged.
Aging effects
Change of slope due to aging of the reference electrode: An optimal slope value is 100 mg/nA
(new sensor). When the sensor ages, this value changes. When the slope exceeds or falls below
certain limits, an error message is displayed and the sensor has to be exchanged.
The slope of the sensor and the sensor limits are displayed after each calibration procedure.
6.2 Spare parts availability
The manufacturer adheres to the basic principle that functionally adequate spare parts for each
device or each important accessory part will be kept available for a period of 3 years after
delivery of the last production run for the device.
This regulation only applies to spare parts which are subject to wear and tear under normal
operating conditions.
6.3 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.
CAUTION!
The life time expectation of the sensor depends on the application. Normally, the life time lies
between 2 and 4 years.
In applications with high reliability requirements, e.g. drinking water, we recommend replacing
the sensor once a year.
INFORMATION!
It is helpful to note the sensor slope after each calibration procedure. This way you can compare
the slope over the sensor lifetime.
INFORMATION!
For more precise information, please contact your local sales office.