4
area may also occur where excessive
amounts of refrigerants are vented.
The H-10G cannot differentiate
between atmospheric contamination and
an actual leak because it will respond to
any halogen gas passing over the heat-
ed sensor. However, a large leak often
still can be located and the background
contamination discriminated against by
switching to the LG leak range.
A contaminated condition can be
improved greatly by ventilating or isolat-
ing the leak-check area.
Important:
Avoid placing the probe directly
in a stream of concentrated halogen, as this
will drastically shorten the sensor life.
Operating Instructions
1. Before using the H-10G for the first
time, remove the paper disc from the
cap on the calibrate reference bottle
(fig. 1) and allow a few minutes for the
leak rate to stabilize. This disc is used
to avoid evaporation and should be
replaced after calibration. Be certain that
the bottle contains a quantity of halogen
R11. The liquid level can be observed
by pulling the bottle up from its spring
retainer clip and out of the panel. Initially
this bottle is filled with enough halogen
to last approximately 6 months.
2. Plug the power cord (fig. 1) into a
50/60 Hz AC outlet of the nominal volt-
age as listed on the unit’s rating plate.
3. The H-10G will start to warm up when
the power cord is plugged into an AC
outlet and the power switch is turned on.
Allow 2 minutes for warm-up.
4. Check for sufficient airflow by pointing
the probe tip toward the floor, covering
