THEORY OF OPERATION
5-1
5.0 Theory of Operation
The AreaRAE-Gamma monitor uses one to five different
sensors to measure a variety of gases. A newly developed
Electrodeless discharge UV lamp is used as the high-energy
photon source for the PID sensor (see Figure 5-1). The
patented PID sensor will detect a broad range of organic
vapors. One electrochemical toxic gas sensor can be installed
in the monitor to measure inorganic toxic gases. Many different
types of toxic sensors are offered; they can be plugged into the
toxic gas sensor socket and are interchangeable. A catalytic
bead sensor is used to measure combustible gases. An
electrochemical sensor is used to measure oxygen
concentration. A scintillation crystal based gamma radiation
sensor is used to measure gamma radiation.
Microprocessor
LCD Display
Keypad
Serial
Port
Battery
PID
TOX1
Gamma
LEL
OXY
UV Lamp
Pump
Light
Sensor
LED
Buzzer
Charger
Figure 5-1
Block Diagram of AreaRAE-Gamma Monitor
