RKI Instruments GX-2012 Manual - Manual (Page 44)

36 • Measuring Mode, Alarms GX-2012 Operator’s Manual
Measuring Mode, Alarms
This section covers alarm indications in Measuring Mode. It also tells you
how to reset the GX-2012 after an alarm has occurred and how to respond to
an alarm condition.
NOTE: False alarms may be caused by radio frequency (RF) or
electromagnetic (EMI) interference. Keep the GX-2012 away from
RF and EMI sources such as radio transmitters or large motors.
Alarm Indications
CAUTION: If the combustible channel is set for %volume only, then there
are no gas alarms for any detection channel. See “HC Range
Screen” on page 44.
The GX-2012 will sound an alarm, the unit will vibrate, and the LED arrays
will flash when one of the target gas concentrations rises above the Warning
level, or in the case of oxygen, falls below the Low Alarm setting for that gas.
The GX-2012 also sounds an alarm, vibrates, and flashes the LED arrays
when the Alarm level is reached for combustible gas, CO, and H
2
S, when the
concentration of oxygen rises above the High Alarm level, and when the
STEL and TWA alarm points are reached for CO and H
2
S.
When a failure condition occurs, such as a sensor failure, low flow, or dead
battery condition, the unit will also sound an alarm, flash the LED arrays, and
vibrate.
The table below summarizes the types of alarms produced by the
GX-2012.
Table 4: Alarm Types and Indications
Alarm Type Visual Indications Other Indications
Low Alarm
Concentration of gas
rises above the Warning
level, or falls below the
Low Alarm level for O
2
.
• WARNING appears
below the gas list.
• Reading for the gas in
alarm flashes
• Alarm LED arrays
flash
• Backlight turns on
• Buzzer sounds
alternating between a
low and high pitch
• Vibrator pulses