MP-2 Smoke Gas Sensor

  • • Target Gas:C3H8, smoke
  • • Detection range200~10000ppm C3H8
  • • Application:Domestic smoke leakage alarm, industrial smoke gas alarm and portable smoke detector

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  • Principle Introduction
Principle Introduction:

MP-2 model with advanced planar construction is comprised of heater and metal oxide semiconductor material of subminiature Al2O3 ceramic plate, fetch out electrode down-lead, encapsulation in metal base and cap. When the target gas exists , the sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, convert change of conductivity to correspond output signal of gas concentration.

Applications :

Domestic smoke leakage alarm, industrial smoke gas alarm and portable smoke detector.

Technical parameters :
 

Model

MP-2

Sensor Type

Flat Surfaced Semiconductor

Standard Encapsulation

Metal Cap

Target Gas

C3H8, smoke

Detection range

200~10000ppm C3H8

Standard Circuit

Conditions

Loop Voltage

Vc

10V DC

Heater Voltage

VH

5V±0.1V AC or DC

Load Resistance

RL

Adjustable

Sensor character under standard test conditions

Heater Resistance

RH

105Ω±10Ω (room tem.)

Heater consumption

PH

240mW

Sensitivity

S

Ro(in air)/Rs( in 2000ppm C3H8)≥3

Output voltage

Vs

2.5V~4.0V (in 2000ppm C3H8)

Concentration Slope

α

≤0.6(R3000ppm/R500ppm C3H8)

Environment Conditions

Operation Temp.

Tao

-10℃~50℃

Storage Temp.

Tas

-20℃~70℃

Relative Humidity

RH

Less than 95%RH

O2 concentration

O2

21%±1%(cant less than 18%)

O2 concentration effects sensors performance.

Preheat time

Not less than 48 hours

Reference Circuit :
 

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