RKI Instruments GX-2012 Manual - Manual (Page 92)

84 • Overview GX-2012 Operator’s Manual
Chapter 5: Using the GX-2012 in Leak Check Mode
Overview
This chapter explains how to operate the GX-2012 in Leak Check Mode.
Leak Check Mode is used to pinpoint small leaks of combustible gas from
valves, flanges, connections, and other potential leak points. When the GX-
2012 is in Leak Check Mode, only the combustible channel is displayed.
If a GX-2012 is intended for leak check testing, it is shipped with Leak
Check Mode enabled so that the operator must choose which operational
mode to use when the unit is turned on (see “Turning On the GX-2012 in
Normal Mode With All Modes Active” on page 25).
NOTE: In order to use the GX-2012 for Leak Check Mode operation, the
LEL/ppm sensor (NC-6264ALB) must be installed. The LEL sensor
cannot be used.
Start Up, Leak Check Mode
This section explains how to start up the GX-2012 in Leak Check Mode and
get it ready for operation.
NOTE: The battery drain is higher in Leak Check Mode than in Normal
Mode or Bar Hole Mode. Extended operation in this mode will
result in shorter battery life than specified in “Specifications” on
page 3.
Turning On the GX-2012, Leak Check Mode
WARNING: If an oxygen or H
2
S sensor is installed, these sensors will not
be active while the GX-2012 is in Leak Check Mode.
The following description of the GX-2012 start up sequence assumes that the
following menu items in Maintenance Mode are turned on: LNCH BRK, ID
DISP, CL RMNDR, and BP RMNDR. If either of these items is turned off,
then the corresponding screen will not appear.