Honeywell XT Series Operating Instructions Manual page 8

Should the Standard Display XT unit be exposed to a level of gas in excess of the alarm set points
the unit will display the concentration of the gas. If the measured reading exceeds the range of
the detector then the numerical digits will flash.
The Real Time Display XT displays the concentration reading all the time. The lifetime remaining
is displayed in the self-test mode.
Below Alarm
Above Alarm
Self-test
8
Standard Display
Displays the lifetime remaining
Displays the gas concentration
Alarm set points, peak reading
and time since peak
Real Time Display
Displays the gas concentration
Displays the gas concentration
Alarm set points, peak reading,
time since peak and lifetime
remaining
XT Series Personal Gas Detector