RKI Instruments Gas Tracer - Manual (Page 116)

108 • Leak Testing Gas Tracer Operator’s Manual
3. Press and hold the AIR▲ button. The display will prompt you to
hold the AIR▲ button.
4. Continue to hold the AIR▲ button until the display prompts you to
release the AIR▲ button. The Gas Tracer will set the fresh air
reading for the combustible channel. Once the fresh air adjustment
has finished, start up is complete and the unit is ready for leak
testing.
5. If you would like to calibrate the Gas Tracer while in Leak Check
Mode, follow the same instructions described in “Calibration
Mode” on page 61.
Leak Testing
In Leak Check Mode, the Gas Tracer only displays combustible gas
readings. The increment of the reading is always 10 ppm but the
display range can be adjusted by using the DISPLAY (ADJ) button.
The display range choices are 500 ppm, 1000 ppm, 2000 ppm, and
5000 ppm. The readings are displayed in both numerical and bar
graph form. As the gas concentration increases from 0 ppm, the alarm
LEDs begin to blink in unison with the buzzer’s pulsing. The
blinking/pulsing rate increases as the gas reading increases. If desired
the buzzer can be turned off in Leak Check Mode.
In a low-light environment, press and release any of the buttons to
turn on the display backlight. See “Updating the LCD Back Light
Time Setting” on page 167 to program backlight duration. If BEEP.
SET
is turned on in Maintenance Mode, the Gas Tracer beeps once
every 5 minutes to confirm that it’s operating.
Setting the Display Range Value
The Gas Tracer Leak Check Mode has 4 display range ppm values to
choose from: 500 ppm, 1000 ppm, 2000 ppm, and 5000 ppm.
AIr
CAL
HOLD AIR