Kimo Kigaz 300 CLA, Руководство пользователя

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20. Maintenance of the analyser
20.1. Life-time of the sensors
Sensors are electrochemical type : inside them, in the presence of gas to detect, a chemical reaction occurs that causes an emission of electrical
current. The electric current strength detected by the instrument is converted into a corresponding gas concentration. The life-time of the sensor is
strongly linked to the reagent consumption present in the sensor. As their consumption increases, features of the sensor are getting worse until their
exhaustion, after which it is necessary to replace it. To ensure the measurement accuracy, sensors have to be calibrated on ly in Assistance centre
qualified by Kimo.
Sensor Average life-time Required calibration
O
2
2 years Annual
CO-H
2
From 2 to 3 years Annual
NO From 2 to 3 years Annual
NO
2
From 2 to 3 years Annual
SO
2
From 2 to 3 years Annual
CH
4
From 3 to 5 years Annual
20.2. Replace the sensors
Follow this procedure to replace an used sensor :
The analyser must be turned off.
➢
Remove the protective cover.
➢
Turn the analyser.
➢
Unscrew the sensors cover with a crosshead screwdriver.
➢
Remove the trap.
➢
Disconnect the ribbon cable of the sensor to replace.
➢
Rotate the sensor counter clockwise taking care not to bring pressure on the board of the sensor.
➢
Remove the sensor.
➢
Put the new sensor taking care to insert the two jacket hooks of the sensor in their location.
➢
Rotate the sensor clockwise.
➢
Reconnect the ribbon cable of the sensor.
1
Maintenance of the analyser
35
Sensors access
Disconnection of the
ribbon cable of the sensor
to replace
Sensor rotation Remove the used
sensor
Board
Jacket
hooks
1
2
3 4
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