RKI Instruments GX-94 - Manual (Page 44)

Page 43 GX-94 Operator’s Manual
6. Install a fresh battery in the battery holder. Use a CR2032 3.0 volt
coin type lithium battery. See the Parts List at the end of this man-
ual for a replacement battery available from RKI Instruments, Inc.
7. Reinstall the cover, belt clip, and screws.
Charcoal Filter
The CO sensor diffusion opening is equipped with an activated carbon
filter disk that includes an integral rubber boot. It removes H
2
S and
most hydrocarbons to limit interference with the CO measurement.
Figure 4: Charcoal Filter Replacement
To replace the filter:
1. Unscrew the diffusion screen retaining screw located at the rear of
the unit.
Diffusion Screen
Retaining Screw
Charcoal Filter
w/Rubber Boot
Diffusion
Screen