Maintenance; Inspection Of The Sensor; Visual Inspection - Mettler Toledo InPro 6900 Série Instructions D'utilisation

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6

Maintenance

6.1

Inspection of the sensor

6.1.1 Visual inspection

To check your sensor, we recommend the following
procedure:
• The contacts of the connector must be dry.
Moisture, corrosion and dirt in the connector can
lead to false readings.
• Check the cable for buckling, brittle areas or
ruptures.
• Before calibration always examine the membrane
foil optically for signs of damage. The foil must be
intact and clean. Dirty membranes should be
wip ed clean using a soft, moist tissue.
Note: An undulated membrane has no influence on
the sensor performance, assuming the membrane
is intact.
• The membrane body must be replaced if the sen-
sor has too long a response time, the reading is
unstable or subject to drift, and if the sensor can-
not be calibrated or the membrane shows sign of
mechanical damage.
• Check the cathode area for discoloration, conta -
mination or cracks in the glass. If necessary rinse
with demineralized water and clean with a clean
soft brush or soft paper tissue.
Attention! Do not use any cleaning agents contai ning
alcohol. This could damage the sensor or lead to
fault current.
Attention! The glass body is fragile and sensitive to
vibration.
InPro 6900
52 201 029
InPro 6900 Series O
© 05 / 15 Mettler-Toledo AG
Sensor 12 mm
2
Printed in Switzerland