Specifications

IV. MAGNETIC SWITCH OPERATION
The SEC 3100 has three (3) magnetic switch pickups on the Display PCB. The picture below shows the
location of the magnetic switches labeled UP, DOWN and ENTER. Placing a magnet in close proximity to
one of the switches will cause the following operations to occur.
Switch Operation
ENTER Enter Menu Mode, Selects a menu to Enter
UP Moves up through Menu selections
DOWN Moves down through Menu selections
For further details on gas sensor calibration refer to the appropriate SEC sensor instruction manual.
The LCD contrast potentiometer, (POT1) is located under the protective faceplate shown above on the front
side (LCD side) of PCB to the left of the LCD.
Gas Sensor Port (1 x ¾ h )
SEC 3000
SEC Millenium
Magnetic Switch (3)
Field Wiring Port (2 x ¾ h)
¾Power
¾4-20 mA
¾RS485 (MODBUS)
¾Alarm Relays
Fault LED
Green OK
Memory Data Card
Slot
Red Fault
LCD Display:
Real Time Status
Gas Type
Gas Concentration
Fault Identification
Range
ID Number
Memory Card Status
Interactive Menus
Calibration
Relay Programming
ID & Zone Number
Mounting holes (2)
Alarm LED
Green OK
Yellow Low Alarm
Orange Mid Alarm
Red High Alarm