Maintenance; Inspection Of The Sensor; Visual Inspection; Testing The Sensor With A Transmitter - Mettler Toledo InPro 5500i Instructions D'utilisation

InPro 5500 i CO
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 Membra-
Cap optically for signs of damage. The Membra-
Cap must be intact and clean. Dirty membranes
should be w ip e d clean using a soft, moist tissue.
– The membrane body has to be replaced once
to twice per year to maintain max. measuring
performance.
– The MembraCap needs also to be replaced if the
sensor c annot be calibrated or the MembraCap
shows sign of m echanical damage.
– The Intelligent Sensor Management (ISM)
Dynamic Lifetime Indicator will tell the user when
a MembraCap change needs to be performed.
a
Attention! Do not use any aggressive cleaning
agents. This could damage the sensor or lead to
faulty measurement. If the dirt can not be removed
with a moist tissue, use gently non-aggressive
solvent (alcohol). Any other chemicals shall not be
used. This could damage the sensor or lead to a
faulty measurement.

6.1.3 Testing the sensor with a transmitter

For verifying the sensor, check measurements vs.
reference (or known) sample values.
This can be done in-line in process solution or using
CO gas where the partial pressure is known. For
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off-line / workshop verification only use a calibration
gas of a known value.
If the measured values differ from the desired values,
a new process or a calibration with reference gas
might be performed.
h
Note: When the MembraCap is exchanged the
sensor needs to be operated at least 15 min. before
performing a calibration.
If the sensor does not perform as expected after
replacing the MembraCap send the sensor to your
local METTLER TOLEDO representative for inspection.
© 06 /14 Mettler-Toledo AG
Printed in Switzerland
Sensor
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InPro 5500 i
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