RKI Instruments Gas Tracer - Manual (Page 46)

38 • Measuring Mode, Alarms Gas Tracer Operator’s Manual
Measuring Mode, Alarms
This section covers alarm indications in Measuring Mode. It also tells
you how to reset the Gas Tracer 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 Gas Tracer 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 46.
The Gas Tracer 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 Gas Tracer also sounds an alarm, vibrates, and flashes the LED
arrays when the Alarm level is reached for combustible gas and CO,
when the concentration of oxygen rises above the High Alarm level,
and when the STEL and TWA alarm points are reached for CO.
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
Gas Tracer.
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