Calibration & Maintenance
71-0011 — REV E
4-15
Replacing the Sensor
Open the instrument, then perform the following steps:
1.
Hold the monitor in one hand with your thumb on top of the
buzzer. This holds the electronics assembly in place while
you remove the sensor. Do not touch the main board during
this process.
2.
With your other hand, pull the sensor straight up out of its
socket.
3.
The sensor has four pins (H
2
S and CO) or two pins (O
2
) that
match the socket pattern on the main board. Align the pins
of the new sensor with the socket, then insert them straight
down into the board.
4.
Securely close your monitor.
5.
Allow at least 1 hour for the new CO or H
2
S sensor or
5 minutes for the O
2
sensor to stabilize before turning on
your monitor
6.
Calibrate the new sensor before using the instrument.
NOTE
If the FAIL message was displayed before you replaced the
sensor, the FAIL message will appear when you turn the
instrument on with the new sensor. When you calibrate the new
sensor, the FAIL message is removed and the instrument operates
properly.
Содержание CO-95
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