Maintenance; Inspection Of The Sensor; Visual Inspection - Mettler Toledo InPro 6850 i Bedienungsanleitung

20
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.
M oisture, corrosion and dirt in the connector can
lead to false readings.
– Check the cable for buckling, brittle areas or
r uptures.
– Before calibration always examine the membrane
foil optically for signs of damage. The foil must
be intact and clean. Dirty membranes should be
w ip e d clean using a soft, moist tissue.
h
Note: An undulated membrane has no influence on
the sensor performance, assuming the membrane
is intact.
– The membrane body must be replaced if the
s ensor has too long a response time, the reading
is u nstable or subject to drift, and if the sensor
c annot be calibrated or the membrane shows
sign of m echanical 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.
a
Attention! Do not use any cleaning agents contai-
ning alcohol. This could damage the sensor or
lead to fault current.
a
Attention! The glass body is fragile and sensitive
to vibration.
InPro 6850 i / 6900 i / 6950 i
52 206 349
InPro 6850 i / 6900 i / 6950 i O Sensor 12 / 25 mm
2
© 04 / 13 Mettler-Toledo AG
Printed in Switzerland