Detcon SG1 - Manual (Page 6)

5
Start of Operation
Instrument Power-On
Press Power key for 2 seconds to turn power on.
(Power will not be
turned on if the
Power key is released before 2 seconds)
After power-up, a 10 second countdown will be displayed on the LCD
screen as the unit is being stabilized and the program enters
Gas Detection Mode with alarm
sound and vibration.
When the unit stabilizes and enters Gas Detection Mode, it will display the icon and gas
reading. For normal operation, the icon will disappear after blinking 5 times and the
concentration of the gas detected at the moment will be indicated. In the event that stabilization
of the unit fails, it will not enter Gas Detection Mode and the
icon will be displayed. In this
case, calibration of the sensor or service of the device is required.
Pass Fail
Instrument Power-Off
Press Power key for 3 seconds to turn power off. (Power will not be
turned off if the Power key is released before 3 seconds)
Caution: Appropriate calibration of the device is always required prior to operation at work
sites. Verify the unit’s detection response is functional and valid for the pertinent gas and
that the gas detection region is not blocked with foreign materials that could interfere with
gas detection.
LCD Back Light
In Gas Detection Mode, the concentration of gases being monitored
will be indicated on the LCD display. The LED backlight can be turned
on by pressing the green Arrow key which enables the operator to view
the measured value in dark locations. The backlight is turned off by
pressing the green Arrow key again. The backlight will automatically
turn off after 30 seconds.