Heath Consultants GT Series - Manual (Page 76)

6-12
USER HANDBOOK
.
6.6.5 Menu / Off
To re-select the Mode Menu:
• Press and hold both the LH button and the RH
button .
While both buttons are depressed, the instrument
display will step through previous menus, each
displayed for approximately two (2) seconds.
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.
6.7 BARHOLE ALARMS
There are no Gas Alarms in this mode.