Mettler Toledo InPro 6800 Bedienungsanleitung Seite 11

Accessories O
2
Sensor check
For this test the O
brane of the sensor must be dry and clean.
If the LED does not light up, you should check the battery of the O
Sensor-Master (see paragraph "Battery check"). If the battery is
working, than there is probably a problem with your sensor. You
should change the electrolyte and/or the membrane body of your
sensor. If after a membrane change the LED still does not light up,
this means that there is maybe something wrong with the interior
body of the sensor. You should than change it (please refer to the in-
struction manual of your sensor for a detailed service instructions).
Important! The Sensor Check function veryfies only the correctness
of the electrode current for air measurement. In order to be absolutely
sure of the functionality of the sensor, the residual signal in an oxy-
gen free medium should also be controlled (please refer to the sen-
sor instruction manual for more detailed information).
© 03/14 Mettler-Toledo AG, Greifensee
Printed in Switzerland
sensors
sensor must be fully polarized and the mem-
2
Expose the sensor (connected to O
Master) to the air. By pushing the switch to
the right to the position "2 – Sensor check",
the O
trode current for air measurement delivered
by the sensor is within the admissible range
(40 to 100 nA for an InPro 6800; 250 to
500 nA for an InPro 6900; 2500 to 6000 nA
for an InPro6950).
If the green LED lights up the current for air
measurement is within the admissible range.
Sensor-Master checks wether the elec-
2
InPro 6800/6900/6950
52 200 952
11
Sensor-
2
2