10 pcs GM-502B MEMS VOC Gas Sensor

$29.00
Application:Gas leak detection for mobile phones, computers and other consumer electronics applications, also for breathing gas detection control, smoke alarm indoor etc.
Feature:MEMS technology, Strong construction,Small sizes and low power consumption,Fast response and resume

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Availability: 488 In Stock
Categories: Environmental Health, IAQ sensor, MEMS Gas Sensors & Modules, MEMS Sensor

Production Description:
MEMS VOC 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

Application:
Gas leak detection for mobile phones, computers and other consumer electronics applications, also for breathing gas detection control, smoke alarm indoor etc.
Technical Parameters：

Part No.

GM-502B

Sensor Type

MEMS VOC Sensor

Standard Encapsulation

Ceramic

Detection Gas

Ethanol, formaldehyde, toluene &etc.

Detection Range

1~500ppm

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 ethanol)

Concentration slope

α

≤0.9(R200ppm/R500ppm ethanol)

Sensitivity

S

R0(in air)/Rs( in 50ppm ethanol )≥3.0

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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