RKI Instruments GX-2009 Manual - Manual (Page 55)

GX-2009 Operator’s Manual User Setup Mode • 50
Setting the Alarm Points
Entering the ALARM--P menu item allows you to set the alarm points for
each channel.
Table 5 below lists the factory set alarm points for each channel.
All of the alarms are increasing alarms, the alarm condition actuates when
the gas level increases above the alarm point, except for the O
2
Warning
alarm. The O
2
Warning alarm is a decreasing alarm. The O
2
Warning
condition actuates when the oxygen level decreases below the alarm point.
For the combustibles channel, it is not possible to adjust either the Warning
or Alarm settings to be higher than 60 %LEL. In addition, the Warning
setting cannot be adjusted higher than the Alarm setting for all channels.
1. At the ALARM--P screen, press and release the POWER MODE button.
The following screen will display showing the combustible channel.
2. You can scroll through all the channels by pressing and releasing the
AIR button.
Table 5: Factory Set Alarm Points
Channel Warning Alarm STEL TWA
O
2
19.5%
Decreasing 23.5% n/a n/a
Combustibles 10% LEL 50% LEL n/a n/a
CO 25 ppm 50 ppm 200 ppm 25 ppm
H
2
S 5 ppm 30 ppm 5 ppm 1 ppm
ALARM--P
- - -
ALARM--P
CH4 %LEL