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VOCs Sensor – for the detection of Formaldehyde, Tolune, Organic Solvent
1. Sensitivity characteristic slope
1.0
1.0
1.0
Sensitivity(Rgas/Rair)
0.9
Sensitivity(Rgas/Rair)
0.8
0.8
Sensitivity(Rgas/Rair)
Formaldehyde
0.9
0.9
Toluene
0.8
0.7
0.7
Benzene
0.7
0.6
0.6
0.6
0.5 0.1
1
0.5 0.1
1
0.5 0.1
1
Concentration(ppm)
Concentration(ppm)
Concentration(ppm)
2. Basic Measuring Circuit & Stability
Vcc
●
Long Term Stability
5
Sensor VH
●
○
Output Voltage[ Volt ]
Rs
4 3 2 1
RL=2㏀ Rs=4㏀
RL GND
●
Vout
○
Vcc : Circuit Voltage(5V) VH : Heater Voltage(5V) RL : Load Resistance Rs : Sensor Resistance 0 20 40 60
Time[days]
80
100
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3.
MS1100-111 Datasheet
