MP905 datasheet(4/7 Pages) WINSEN

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Basic Circuit

Fig2. MP905 Test Circuit

Instructions: The above fig is the basic test circuit of MP905.The sensor requires heater voltage (VH) and circuit

voltage (VC) which share one source. They must adopt DC power. VRL is the voltage of load resistance RL which is

in series with sensor.

Description of Sensor Characters

Fig5.Responce and Resume

Fig6.Linearity curve

Alcohol

Acetone

Methanal

Toluene

benzene

Iso-butane

Smoke

Concentration (ppm)

Fig4.Typical temperature/humidity characteristics

Rs means resistance of sensor in 10ppm alcohol under

different tem. and humidity. Rso means resistance of the

sensor in air under 20℃/55%RH.

Fig3.Typical Sensitivity Curve

Rs means resistance in target gas with different

concentration, R0 means resistance of sensor in clean air.

All tests are finished under standard test conditions.

Alcohol

Methanal

benzene

Concentration (ppm)

VC/VH

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