(Continued on page 11)
10
OPERATION AND USE
continued from page 8
NOTE: These instruments have cross sensitivities to a variety of
gases.
9. To assist in locating the source of small combustible gas
leaks or surveying areas outdoors or indoors, press and release
the TICK/CAL button (B). This will start an audible tick preset at
2-3 ticks per second.
Move the sensor toward the area suspected of leakage. As the
sensor moves closer to a leak source the tick will increase.
When the tick becomes a steady tone press the TICK/CAL but-
ton (B) again while keeping the sensor head in the same posi-
tion. This will slow down the tick and allow the operator to find a
higher concentration using the same procedure.
If there is no tick, press the TICK/CAL button (B) again to reset
to the steady ticking sound. For best results always use the
leak detector prior to using any liquid leak detection fluids as
these sensors will detect their presence.
10. Following Country, Province, State, Municipal and/or Com-
pany procedures move to the areas where gas readings are sus-
pected or must be tested. During sampling the respective read-
ings may change. Audible and visual alarms will activate when
the preset limits are reached.
11. When being used in dark areas press and release the LIGHT/
ZERO button (C) to turn on the back light Press again to turn off.
12. To turn instrument off, push and hold the POWER/MUTE
button (A) for 5-6 seconds until “OFF” appears on the display.
11
OPERATION AND USE
continued from page 10
4. All instruments read with a resolution of 10ppm up to 990ppm.
The scale automatically switch to LEL when 990ppm is exceeded
with a resolution of 0.1% LEL. Optionally all readings may be
displayed in LEL only. Readings beyond 100% LEL are indi-
cated by “OL” (overload).
5. It may be necessary to manually zero the instrument based
on company practices and environmental conditions.
CAUTION: Zeroing should be done in a gas free envi-
ronment only.
6. When testing high areas or overhead lines the use of the
optional extension adapter will allow a broom handle or painters
stick to extend the instrument to the area where sensing must
be accomplished. This slides onto the battery sleeve and is
held in place by the locking nut assembly.
7. When a gas is sensed the display will update. If an alarm
condition exists, based on a preset alarm point, the red LED will
flash and the alarm will sound.
8. During an alarm condition (factory default at 10% LEL meth-
ane) the display will flash and an audible alarm will sound indi-
cating a potentially unsafe environment. To disable the audible
alarm press and release the MUTE button (A). To enable the
alarm press and release it again.
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