10 pcs GM-702B MEMS Carbon Monoxide Gas Sensor

$35.00
Application:It is suitable for the detection of carbon monoxide leakage for residential use or industrial use.
Feature:MEMS technology, Strong construction,Small sizes and low power consumption,Fast response and resume

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Availability: 481 In Stock
Categories: Carbon Monoxide Detection, Carbon Monoxide(CO) Detection, Civil Security, CO sensor

Production Description:
MEMS carbon monoxide 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
  • Small sizes and low power consumption
  • Fast response and resume
  • Simple drive circuit
  • High sensitivity to CO gas

Application:
It is suitable for the detection of carbon monoxide leakage for residential use or industrial use.
Technical Parameters：

Part No.

GM-702B

Sensor Type

MEMS CO Gas Sensor

Standard Encapsulation

Ceramic

Detection Gas

CO gas

Detection Range

5~5000ppm (CO)

Standard Circuit

Conditions

Loop Voltage

VC

≤24V DC

Heater Voltage

VH

2.5V±0.1V AC or DC (high temp.)

0.5V±0.1V AC or DC (low temp.)

Heating Time

TL

60s±1s (high temp.)  

90s±1s (low temp.)

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 150ppm CO)

Sensitivity

S

R0(in air)/Rs(in 150ppmCO)≥3

Standard test conditions

Temp. Humidity

20℃±2℃；55%±5%RH

Standard test circuit

VH: 2.5V±0.1V (high temp.)

    0.5V±0.1V (low temp.)

VC: 5.0V±0.1V




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