GX-2012 Operator’s Manual Replacing the LEL and CO Filters • 153
4. Insert the battery pack into the charging station as shown in Figure 25
below so that the metal contacts on the back of the battery pack come into
contact with the metal contacts in the charging station. When proper
contact has been made, the red LED on the charging station will turn on.
Figure 25: Putting the Battery Pack into the Charging Station
5. When a full charge has been reached, approximately 4 hours, the red
LED on the charging station will turn off. Remove the battery pack from
the charging station and unplug the charging station’s power cord from
the AC outlet.
Replacing the LEL and CO Filters
The H
2
S filter disk is dark red in color and although it may darken over time,
its color is not indicative of remaining filter life. The H
2
S filter disk can
absorb H
2
S for 33 ppm hours and should be replaced after that much
exposure. With this many ppm hours of absorption, the H
2
S filter disk should
be replaced after 80 minutes of exposure to 25 ppm H
2
S. This equates to
replacing the H
2
S filter disk after 40 2-minute calibrations with a cylinder
containing 25 ppm H
2
S. If H
2
S exists in the monitoring environment, the
H
2
S filter disk will have to be replaced more frequently.
1. Verify that the GX-2012 is off.
2. Use a screwdriver to remove the three screws holding the belt clip to the
back side of the instrument. Two of these screws also secure the flow
chamber.
To Next Page
Loading...
