6
Figure 2
6. Adjust the balance control (fig. 1) until
the audio ticks slowly, about 1–3 ticks
per second. The neon lamp in the
probe (fig. 2 and fig. 3) will also flash,
but much more slowly.
7. Place the probe tip over the hole in
the cap of the calibrate reference
bottle for 2–3 seconds. This allows
enough time for the H-10G to pump
down the concentration of gas which
normally collects around the bottle’s
outlet, and thus arrive at a steady
state response (be sure that the bottle
contains a quantity of refrigerant). The
neon lamp in the probe should flash
rapidly, and the audio pitch should
increase markedly, but then back off
somewhat from the saturated, full-
scale howl.
Figure 2
