Heath Consultants GT Series - Manual (Page 49)

4-7
LEAK TEST MODE
4.5 DESCRIPTION OF LEAK TEST BUTTON
OPERATION
4.5.1 Ticker (Geiger) ON / OFF
To enable and disable the audible Ticker (Geiger):
(in the PPM range)
• Press and hold the UP and DOWN buttons
simultaneously, as follows:
1. First press and hold - to enable visual only.
2. Second press and hold - to enable both audible
and visual.
When PPM autoranges to LEL, the Ticker (Geiger) audible/
visual continues until an LEL alarm is reached. The Ticker
(Geiger) is then switched off and the LEL alarm will be
activated. If no LEL alarm is set, the Ticker (Geiger) will
remain activated.
4.5.2 Ticker (Geiger) Adjust
To adjust the Ticker (Geiger) threshold:
To increase
• Press and hold the UP button.
To decrease
• Press and hold the DOWN button.
The threshold setting is displayed briefly beneath the PPM
CH
4
. In the following example, Fig. 4.8, the threshold is
500.