Heated electrode refrigerant detector utilizing one or more control loop

摘要

A gas detector for sensing the presence of at least one predetermined gas is operative in conjunction with a power source and includes a detection circuit, a temperature controller, and a current controller, wherein the detection circuit includes a sensing device having first and second electrodes, the first electrode being connected to the power source for heating the first electrode, the temperature controller is operatively connectable to the detection circuit for maintaining a temperature of the first electrode at a predetermined magnitude, and the current controller is operatively connectable to the detection circuit for maintaining a current in the second electrode at a predetermined magnitude. <IMAGE>