Heath Consultants GT Series - Manual (Page 96)

9-6
USER HANDBOOK
9.6 SNIFFER TICKER (GEIGER) INDICATION
The Ticker (Geiger) range at start up is 0-1000 ppm.
For any subsequent PPM concentration, the Ticker (Geiger)
audible / visual can be “zeroed” with the DOWN button
. e.g. 600ppm Ticker (Geiger) can be ‘backed off’
with the DOWN button , for example, 600 ppm Ticker
(Geiger) can be ‘backed off’ to enable tracing to higher
concentrations, in which case the Ticker (Geiger) range
becomes 600-1600 ppm etc, etc.
Note: The display range always remains as 0-10,000ppm.
The Ticker (Geiger) visual is such that the LED’s illuminate
in pairs, according to the following table, over any 1000
ppm range as explained above.