10 Definition of Terms
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Material
SECC or SS304
Paint
Bake-coated with melamine
Outer color
Munsell 2.5Y9/2
9-2. Detection principle
An electrochemical type sensor electrolyzes a gas directly while maintaining the interface between
electrode and electrolyte at a constant potential (bias voltage). A gas is electrolyzed by an electrolysis cell
to which a certain potential (bias voltage) is applied, and the gas is detected from the electrolytic current
generated at that time.
10
10
Definition of Terms
Electrochemical type
This is a principle of the sensor installed in the detector head.
See "9-2. Detection principle" for details.
Initial clear
Output from the detector head fluctuates for a while after turning on the power.
This is a function to prevent triggering alarm during that time.
Full scale
Maximum value of the detection range.
ppm
A concentration unit that means part per million of gas to be detected.
Calibration
Adjusts the readings to the calibration gas concentration value by using the
calibration gas.
Output
WE: Working electrode
CE: Counter electrode
WE
CE
REF
Potentiostat
circuit
