$36.62
$31.12
Application:Mostly used in the fixed or portable smoke detector or alamers for domestic and industrial application.
Feature:MEMS technology, Strong construction,High sensitivity to combustible gases,Small sizes and low power consumption

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Availability: 500 In Stock

Production Description:
MEMS smoke gas sensor is using MEMS micro-fabrication hot plate on a Si substrate base, gas-sensitive materials used in the clean air with low conductivity metal oxide semiconductor material. When the sensor exposed to gas atmosphere, the conductivity is changing as the detected gas concentration in the air. The higher the concentration of the gas, the higher the conductivity. Use simple circuit can convert the change of conductivity of the gas concentration corresponding to the output signal.
Feature:

  • MEMS technology, Strong construction
  • High sensitivity to combustible gases
  • Small sizes and low power consumption
  • Fast response and resume
  • Simple drive circuit, Long lifespan

Application:
Mostly used in the fixed or portable smoke detector or alamers for domestic and industrial application.
Technical Parameters:

Part No.

GM-202B

Sensor Type

MEMS

Standard Encapsulation

Ceramic

Detection Gas

CH4, C3H8 &etc.

Detection Range

1~5000ppm (C3H8)

Standard Circuit

Conditions

Loop Voltage

VC

≤24V DC

Heater Voltage

VH

2.5V±0.1V AC or DC

Load Resistance

RL

Adjustable

Sensor character under standard test conditions

Heater Resistance

RH

80Ω±20Ω(room temperature)

Heater consumption

PH

≤50mW

sensitive materials resistance

RS

1KΩ~30KΩ(in 50ppm C3H8)

Sensitivity

S

R0(in air)/Rs(in 5000ppmCH4)≥1.5

Concentration Slope

α

≤0.6(R100ppm/R30ppmC3H8)

Standard test conditions

Temp. Humidity

20℃±2℃;55%±5%RH

Standard test circuit

VH:2.5V±0.1V;VC:5.0V±0.1V









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