Gas Tracer Operator’s Manual, CSA Version
Leak Testing • 103
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 152
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.
NOTE:
The Gas Tracer is always detecting combustible gas up to 5000 ppm. The
display range value is only adjusting what part of the detection range is
displayed on the LCD.
To change the display range value:
1. While in Leak Check Mode, press and release the DISPLAY (ADJ) button. The
display range value displayed along the bottom of the screen will change.
Continue to press and release the DISPLAY (ADJ) button until the desired
display range value is displayed.
2. The unit is now operating with the selected display range.
Locating a Leak
1. Start up the Gas Tracer as described above in “Turning On the Gas Tracer, Leak
2. Move the probe tip or tapered nozzle tip back and forth along the area where a
leak is suspected.
3. Observe the display reading. If the gas level increases, the numerical reading
will increase, the bar graph level will increase, and the beeping and buzzer
pulsing frequency will increase.
4. Your gas reading may exceed your display range or 100% LEL. For a
description of both scenarios, see the following section.
0
500
ppm
ppm
LEAK CK MODE
CH
4
F.S.
