RKI Instruments Gas Tracer - Manual (Page 121)

Gas Tracer Operator’s Manual Leak Testing • 113
2. Use the (SHIFT)T and AIRS buttons to scroll to the desired
station ID, then press and release the POWER ENTER button to
continue to the Base Reading Screen. To return to the Station ID
Select Screen without taking a base reading, press and release the
RESET SILENCE button.
3. In order to get a base, or background, reading, take the instrument
a few feet away from where you intend to test. To save the base
reading, press and release the POWER ENTER button.
NOTE: If the gas concentration exceeds the display range value
without exceeding 5000 ppm, the full scale display range
value will be displayed but the actual gas reading at that time
will be recorded when you press and release POWER ENTER.
For example, if the display range is 500 ppm but the gas level
is 2300 ppm, the display will read 500 ppm but the instrument
will save a reading of 2300 ppm.
If the gas concentration exceeds 5000 ppm in the Base
Reading Screen, the instrument will go into an overscale
alarm and turn off the ppm sensor in order to protect it. The
full scale display range value will be displayed but OVER will
be recorded when you press POWER ENTER. The full scale
display range value will continue to be displayed in the Peak
Reading Screen and OVER will again be recorded when you
press POWER ENTER. The instrument will then enter a 30
second warm up period in order to turn the ppm sensor on
again.
0
500
ppm
ppm
LEAK CK MODE
CH
4
BASE