Detcon SG1 - Manual (Page 7)

6
Operation Method
Detection Mode
The unit enters Gas Detection Mode when the power is turned on.
Gas Detection Mode displays the concentration of the gas and
the remaining battery capacity on the LCD display. It displays
the gas concentration of Oxygen as a percentage (%) and toxic
gases such as H
2
S, CO and SO
2
in parts per million (ppm).
The unit displays the real-time concentration value and monitors any
gas concentration changes. If the value exceeds the 1st or 2nd Alarm setting, both the
displayed value and the corresponding alarm icon ( or
) will start blinking and audible
alarm alerts and vibration will be triggered. This also applies when the value exceeds the
STEL/TWA settings with their corresponding icons blinking.
If the operator moves to a safe place where the concentration value of the measured gas
is at normal levels, the concentration value will decrease and the alarm stops. (Even if the
operator escapes to a safe area after alarm activation, the icon of the alarm remains on
the screen and will disappear only after confirming the value by pressing the Power key.)
When the concentration value of the gas exceeds the maximum measuring range, it
will display the MAX icon and the LED, audible alert and vibration will be triggered.
Indication of Peak Value and TWA & STEL Value
For Oxygen, the measured maximum and minimum values are displayed in order by brief
presses of the Power button. For Toxic Gases, the maximum value, STEL value and TWA
value are also displayed in order by brief presses of the Power button.
Example)
In the case of an Oxygen Detection Unit
Program returns to Gas Detection Mode when the Arrow key is pressed at any time while
displaying Peak, TWA or STEL. If the button is not touched for 10 seconds, the
program will automatically return to Gas Detection Mode.