Maintenance; Inspection Of The Sensor; Visual Inspection - Mettler Toledo InPro6900 Bedienungsanleitung

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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 sensor
has too long a response time, the reading is
unstable or subject to drift, and if the sensor cannot
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
© 12 / 15 Mettler-Toledo GmbH
Sensor 12 mm
2
Printed in Switzerland