Detcon 10C - Manual (Page 19)

Model 10C
4.3 Set Units
Set Units provides a means to adjust the units of measure for the Range selected. The Units should match the
units of measure of the associated sensor.
The menu item appears as: “UNITS SET”.
From the “UNITS SET” display use the “ENT” pushbutton to enter the function. The display will flash the
units of measure currently set. Use the “×” and “Ø” pushbuttons to move through the different units of
measure available. When the correct unit is found, use the “ENT” pushbutton to select that unit of measure.
The display will stop flashing and the units selected will be displayed continuously. Press the “ENT”
pushbutton again, or the “ESC” pushbutton, to leave the function and return to the “UNITS SET” menu item.
Choice for Units is given as:
“ppm” parts per million concentration
“ppb” parts per billion concentration
“%” percent concentration
“mA” milliAmps of loop current
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 “%”.
Move to another menu item by using the “×” and “Ø” pushbuttons, or use the “ESC” pushbutton 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 the display to Normal Operation.
4.4 Alarm 1, 2, and Fault Set
Alarm 1 Set, Alarm 2 Set, and Fault Set are used to set the configuration parameters that will dictate the
behavior of Alarm 1, Alarm 2, and Fault, respectively. Setting the configuration of Alarm 1, and Alarm 2 is
the same, and setting Fault parameters is mostly the same. The exception is that “FAULT SET” does not
provide an option for “direction” because Fault is always triggered on descending input current, the “direction”
step is skipped when setting up the Fault parameters. The first variable in the list for each function is the Set-
Point.
NOTE: For Gas Type “LEL”, the 10C Controller restrains Set-Point settings to be no greater
than 60%, and for Alarm 2 to be not less than Alarm 1 Set-Point and for Alarm 2 to be forced to
Latching relay configuration.
The menu item appears as: “ALARM 1 SET” or “ALARM 2 SET”, or “FAULT SET”, depending upon
which function is chosen.
From the “ALARM 1 SET”, “ALARM 2 SET” or “FAULT SET” display, use the “ENT” pushbutton to
enter the function.
4.4.1 Set-Point
The display will show the current Set-Point. Use the “×” and “Ø” pushbuttons to move through choices of
values for the Set-Point. When the chosen value is found, the “ENT” pushbutton is used to select the value.
10C Control Module Instruction Manual Rev. 0.B Page 15 of 25