Heath Consultants GT Series - Manual (Page 59)

5-5
CONFINED SPACE MODE
5.5 DESCRIPTION OF CSM BUTTON OPERATION
5.5.1 Lights
To switch ON the backlight:
• Press and hold the Centre button .
To switch ON the flashlight:
• Press and hold the Centre button again.
The backlight and flashlight are both timed to switch OFF
after two minutes or can be switched OFF by a third
press and hold the Centre button
.
5.5.2 Min / Max
To show the Maximum gas readings:
(since the current mode was selected)
• Press and hold the LH button .
To show the Minimum gas readings:
(since the current mode was selected)
• Press and hold the LH button again.
A third press and hold the LH button returns to the live
reading.
Note1: If the instrument is in alarm, the Min / Max function
cannot be used until the alarm is Acknowledged.