Operation
Take a gas reading by positioning the end of the instrument’s
flexible probe near the area to be sampled.
The presence of a combustible gas is indicated by a column of
ten red LEDs and a speaker. The number of lighted LEDs
gives visual indication of the relative gas level, while the
speaker produces clicking sounds, similar to a Geiger counter,
that increase in repetition rate as the gas concentration goes
up in relation to the instrument’s gain setting.
The instrument’s sensitivity to gas concentrations is adjusted
by means of its thumb-wheel
Gain
control. Clockwise rotation
increases sensitivity, while counterclockwise rotation de-
creases sensitivity. The
Gain
control is useful in pinpointing
large leaks by starting with the control set to light 1 or 2 LEDs,
and then gradually rotating the control counterclockwise as
the probe gets closer to the leak.
4.3 Using the Earphone
The earphone is an optional accessory that provides private
monitoring of the Leakator 10, and is recommended for use in
high-noise environments. The earphone plugs into the side of
the instrument, just above the thumb-wheel control.
4.4 Turning OFF the Instrument
Turn OFF the instrument by rotating the thumb-wheel con-
trol counterclockwise until a click is heard. There is no need
to purge the instrument with fresh air before turning it off.
8
Leakator 10
Instruction 19-9167
