Heath-consultants GT Series Manual do Utilizador Página 53

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4-11
LEAK TEST MODE
When the menu appears on the screen, release
the buttons, otherwise the instrument will proceed
into the switch OFF process and will switch OFF
after a further three (3) seconds.
4.6 LEAK TEST TICKER (GEIGER) FUNCTION
The Ticker (Geiger) function is available on flammable
ppm range. The Ticker (Geiger) range at start-up is
0-1000 PPM.
For any subsequent PPM concentration, the Ticker (Geiger)
audible / visual can be backed off using the UP
or
DOWN
buttons.
e.g. 600 PPM Ticker (Geiger) can be backed off to enable
tracing to higher concentrations, in which case the Ticker
(Geiger) range becomes 600 to 1600 PPM etc, etc.
Note: The display range remains always as 0 to 2000
PPM.
The Ticker (Geiger) visual is such that the lights illuminate
in pairs according to Fig. 4.9 over any 1000 PPM range as
explained above.
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