Maintenance; Inspection Of The Sensor; Visual Inspection - Mettler Toledo InPro 6850i 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
wiped clean using a soft, moist tissue.
Note: An undulated membrane has no influence
on the sensor performance, assuming the mem-
brane 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 6850i, 6900i, 6950i
52 206 349
InPro 6850i / 6900i / 6950i O Sensor 12 / 25 mm
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© 02 / 09 Mettler-Toledo AG
Printed in Switzerland