21
11.
Service
11.1
Delivery/Transport/Storage of hardness sensor
Each hardness sensor is clearly identifiable by its sensor number. Prior to delivery each sensor
has to pas an extensive quality check, where the sensor quality will be checked and docu-
mented.
The sensible part of the sensor is tightly closed with a protective cap to protect the sensor
membrane against interferences and to keep it in a sterile and humid climate. Hereby it is en-
sured that the sensor can be put in operation directly after removing the protective cap.
The sensor system will be supplied in a special folded box. If the protective cap is tightly
closed and with internal humidity a delivery without prejudice is realized. A comparison of
the number on the sensor with the numbers indicated at packaging and delivery note is rec-
ommended.
Further the sensor should be stored in the folded box between 10°C and 15 °C if possible.
Please note:
Up to the time of operation the protective cap has to be kept tightly closed. The humidity pre-
cipitates inside the protective cap and avoids a drying-out of the sensor membrane.
Sensors without tightly closed protective cap dries up fasten and may under certain circum-
stances not operate properly, or may operate with a time distance of 1 - 2 days only.
Basically, the protective cap should not be removed unless for immediate mounting to protect
the sterile and humid internal climate.
Storage in folded box at temperatures between 10°C and 15 °C