Tracer TP-9363 PRO-Chek CG AM08045-4 - Manual (Page 6)

6
Using Your PRO-Chek CG
1. Be sure to power the PRO-Chek CG on in an area known to be free
of any combustible gases, such as outdoors, for ideal leak checking.
Depress the Power button to turn the unit on. Wait for the PRO-Chek
CG to warm up. The high pitched audible tone will change to a steady
beeping and the LEDs will illuminate briefly. The warm-up time is
approximately 30 seconds, but will vary depending on the length of time
since the unit was last used. In clean air, the audio alarm will beep at a
slow, steady rate.
The unit will automatically power up in maximum sensitivity. This is the
setting in which most leak-checking should be performed, including
searching for very small leaks. The PRO-Chek CG has adjustable
sensitivity. You can reduce sensitivity by dragging your finger downward
on the sensitivity touch pad. This can be helpful for pinpointing the
location of larger leaks. The automatic background zeroing function
keeps the instrument stable, eliminating the need to frequently
adjust sensitivity.
2. Carry the PRO-Chek CG into the area of the suspected leak. An alarm
at this time indicates a build-up of combustible gas in the general area.
When the PRO-Chek CG detects combustible gas, the rate of beeping of
the audio alarm increases in proportion to the size of the leak detected.
The rate of flashing of the LEDs also increases with an increase in the
gas concentration detected.
The automatic background zero function (which is constantly working)
will zero out the background gas and the alarm will slowly return to
a slow beeping. When the unit has stabilized again, proceed toward
the suspected leak site. The PRO-Chek CG will continue to indicate
changes in gas concentration by alarming as the concentration
increases.
3. Move the probe tip slowly (approximately 2-5 centimeters per second)
around suspected leak sites. Try to position the probe tip as close
as possible to the suspected leak site for optimum performance. An
increase in the rate of beeping and flashing LEDs indicates a leak.