Testing The Sensor Via A Transmitter - Mettler Toledo InPro 6880 i Série Instructions D'utilisation

InPro 6880 i Series O

6.1.3 Testing the sensor via a transmitter

If the measured values differ from the expected value,
a air calibration should be performed.
If after such procedures the above mentioned values
are still not reached, replace the opto-cap. If this
doesn't solve the problem too send the sensor to your
local METTLER TOLEDO representative for inspection.
Zero oxygen measurement can be done by using
zeroing gel (order no. 34 100 1032) or nitrogen (N
alternatively in a sample medium saturated with one of
these gases.
After 2 minutes in an oxygen-free sample medium, the
reading on the transmitter should drop to below 10%
of the reading in ambient air, and within 10 minutes
the value should have dropped to below 1%.
If after such procedures the above mentioned values
are still not reached, replace the opto-cap. If this
doesn't solve the problem too send the sensor to your
local METTLER TOLEDO representative for inspection.
Many sample media contain volatile substances which,
even at very low concentrations, have a clearly
perceptible smell. Similarly to oxygen, these substances
are able to invade the opto-cap. Accordingly, they
become noticeable when interacting with the pigment.
In most cases, such substances have absolutely no
influence on the measuring properties of the sensor.
© 09/07 Mettler-Toledo AG
Printed in Switzerland
Sensor 12 mm
2
17
),
2
InPro 6880 i
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