Detcon 10C - Manual (Page 18)

Model 10C
NOTE: While the term “LEL” is used here as a Gas Type, it must be understood that the term
stands for Lower Explosive Limit and implies a Range for a combustible gas without being
specific about which explosive gas. If the gas is Methane (CH4), the LEL is about 5% by
volume of Methane in Air. Therefore, 100% LEL is equivalent to about 5% equivalent methane
in air by volume.
When the chosen Gas Type is found, the “ENT” pushbutton can be used to select it. The flashing will stop and
the selected gas type will remain solidly displayed. The “ENT” pushbutton or the “ESC” pushbutton can be
used to leave the gas type selection function and return to the “GAS TYPE” menu item.
Move to another menu item by using the “×” and “Ø” pushbuttons, or use the “ESC” pushbutton to leave
Program Mode and return to Normal Operation of the display.
NOTE: Pushbutton inactivity during any part of the above procedure will eventually cause the
displayed function to time out and return the display to Normal Operation.
4.2 Range Set
“Range Set” is used to set the full-scale range of gas concentration, with respect to the attached sensor type.
This setting must match the attached sensor’s range. Setting the range to something other than the range of
the sensor attached to the controller will cause erroneous readings, and is not advised.
The menu item appears as: “RANGE SET”.
From the “RANGE SET” display the “ENT” pushbutton is used to enter the range set function. The display
will flash the range that is currently set to show that the range is selectable. Use of the “×” and “Ø”
pushbuttons allows movement through the available ranges. When the chosen range value is found, the
“ENT” pushbutton sets the range to the displayed value. The display will stop flashing to signify the range
selection was set. The “ENT” pushbutton or the “ESC” pushbutton can be used to leave the range selection
function and return and return to the “RANGE SET” menu item.
The list of Range selection choices are:
1.00, 2.00, 3.00, 4.00, 5.00, 6.00, 7.00, 8.00. 9.00,
10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0, 20.0, 21.0, 22.0, 23.0, 24.0, 25.0,
30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95,
100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950,
1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500,
5000, 5500, 6000, 6500, 7000, 7600, 8000, 8500, 9000, 9500, 9999
NOTE: % (percent) can only be found in the Units selection if the range is set to 100 or less.
Likewise, the range cannot be set above 100 if the Units are set to “%”.
The “×” and “Ø” pushbuttons can be used to move to another menu item, or the “ESC” pushbutton can be
used to leave Program Mode.
NOTE: Pushbutton inactivity during any part of the above procedure will eventually cause the
displayed function to time out and return to the display to Normal Operation..
10C Control Module Instruction Manual Rev.0.B Page 14 of 25