RKI Instruments GX-3R User Manual

86 • Chapter 6: Maintenance GX-3R Operator’s Manual
8 . If your instrument has a factory installed dummy sensor, ensure that it is still installed
correctly. Make sure that the flat side is facing away from the GX-3R.
9 . Reinstall the filter gasket/sensor retainer assembly. The black and white filter goes over
the CO/H
2
S sensor with the black half of the filter facing the edge of the GX-3R. Be sure
the filter gasket/sensor retainer is oriented correctly.
10 . If the filter gasket/hydrophobic dust filter assembly came out, reinstall it with the gasket
tabs facing down.
11 . Reattach the bottom cover to the GX-3R. Push it onto the GX-3R until it snaps into
place.
12 . Reinstall the two screws that were loosened in Step 3.
13 . Calibrate the new sensors as described on pg.52. If a new H
2
-compensated CO sensor
was installed, you need to calibrate with CO and
set the H
2
response.
Figure 14: Replacing a Sensor
White
Filter
Material
H
2
S
C
O
White
Filter
Material
Black
Filter
Material
LEL
Sensor
Filter
O
2
AIR
GX-3R
POWER
MODE
CO/H
2
S LEL O
2
Bottom Cover
NOTE: All filters installed black-side-up.
Black
Filter
Material
Toxic Sensor
Combustible Gas Sensor
Toxic Sensor Filters
For dual
CO/H2S sensor
For H2S-only
sensor
For CO-only
sensor
Toxic Sensor Filter, See Table
Filter Gasket/Hydrophobic Dust
Filter Assembly,
gasket tabs on opposite side of this view
Top ViewSide View
Oxygen
Sensor

RKI Instruments GX-3R Specifications

General

Brand	RKI Instruments
Model	GX-3R
Category	Measuring Instruments
Language	English