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  • Product name: Gas detection module, analog voltage output & a variety of gases
  • Product profile: Mainly used for qualitative testing, suitable for home, the environment of harmful gas detection equipment, suitable for a variety of gas detection. Level signal output active low, with alarm signal indicator, can drive PNP transistor
  • Product number: G2xx
  • Shelf time: 2017-06-06
  • Product grade: Commercial grade
  • Output signal: Analog signal
  • Detection type:
  • Environmental Quality: Gas detection
  • Views : 221

A variety of gases can be selected, taking MQ137 as an example.

Product parameter:

Detection gas: hydrogen sulfide

Detection range: 1-200ppm

Operating voltage: DC 24V + 0.2V

Operating current: 150mA

Output voltage: 0~10V

                   0~5V

Note:
※ output is non-linear, only take a range of 0-10V range, because the sensor for the semiconductor sensor, the sensor will output a default voltage range: 1-3V or so, the actual output shall prevail.
※ The output is non-linear, only take a range of 0-5V range, because the sensor for the semiconductor sensor, the sensor will output a default voltage range: 0.5-1.5V or so, the actual output shall prevail.

 

Sensitivity: 3%

Loop voltage: less than DC15V

Load resistance: 1K (adjustable)

Operating temperature: -10~50 (nominal temperature 20)

Working humidity: 90%RH (nominal humidity 65%RH)

Response time: 1S (pre 30~50 minutes)

Recovery time: less than 30S

Service life: 5 years

Product features:

* indication of signal output indicator;

* dual signal output (analog output and TTL level output);

*TTL output effective signal is low; (output low power signal light, can be connected to the microcontroller IO port)

* the analog output increases with the increase of concentration, and the higher the concentration, the higher the voltage;

* it has high sensitivity and selectivity to hydrogen sulfide gas;

* with long service life and reliable stability;

* fast response recovery characteristics;

* with mounting holes, easy to fix and install;

The probe can be inserted and designed to facilitate testing.

Application: it is suitable for detecting harmful gas in household and environment, and suitable for detecting hydrogen sulfide gas

 

A variety of models available

Model

Gas detection

Detection concentration

MP-3

alcohol

0.044mg/L

MP-4

Methane, natural gas

30010000ppm

MP135

Hydrogen gas,

Alcohol,

Carbon monoxide

101000ppm  H2

101000ppm   Alcohol

10500ppm  CO

MP502

Toluene, formaldehyde, benzene, alcohol, acetone and so on

150ppm

MP503

Alcohol, smog

101000ppm  Alcohol

MP901

Alcohol, smog

101000ppm  Alcohol

MG811

Carbon dioxide

35010000ppm

MQ-2

Combustible gas , smoke

10010000ppm   combustible gas

MQ-3B

Alcohol vapor

25500ppm   Alcohol

MQ-4

Natural gas , methane

30010000ppm  Methane,natural gas

MQ-5

Liquefied petroleum gas, methane, coal gas, LPG

30010000ppm  Methane, propane, butane , hydrogen

MQ-6

Liquefied petroleum gas, isobutane, propane, LPG

30010000ppm  Methane, butane and liquefied gas

MQ-7B

Carbon monoxide

101000ppm   CO

MQ-8

hydrogen

1001000ppm   hydrogen

MQ-9

Carbon monoxide

combustible gas

101000ppm   CO

10010000   Gas

MQ131  Low concentration

ozone

101000ppb

MQ131  high concentration

ozone

101000ppm

MQ135

Ammonia, sulfide,benzene steam

101000ppm Ammonia,toluene, hydrogen

MQ136

Hydrogen sulfide

1200ppm  Hydrogen sulfide

MQ137

hydrogen

5500  ammonia

MQ138

Benzene,

Toluene,

Alcohol,

Ketone,

methanol

Or formaldehyde

1100ppm  benzene

10100ppm  toluene

30300ppm  alcohol

10300ppm  Ketone

5100ppm  methanol

110ppm  formaldehyde

MQ139

Freon

101000ppm

WSP2110

Toluene, formaldehyde, benzene, alcohol, acetone and so on

150ppm

WSP5110

Freon, benzene, alcohol and so on

101000ppm

2SH12

sulfur dioxide

1500ppm

2M009

toluene

1500ppm

2M004

acetylene

15000ppm

 

  Working environment  
  Working voltage
  Working current
  Working temperature
  Working humidity
  Storage temperature
  Storage humidity
  Basic parameters  
  Detection of substances
  Detection range
  Output signal
  Accuracy
  Response time
  Reply time
  Gas detection  
  Measuring gas
  Measuring range
  Measurement accuracy
  Clean the voltage in the air
  Warm up time
  Dust detection  
  Measuring range
  Measurement accuracy
  Particle diameter resolution
  Serial data output frequency
  Temperature and humidity  
  Temperature detection range
  Temperature measurement accuracy
  Temperature output mode
  Humidity detection range
  Humidity measurement accuracy
  Humidity output mode
  UV detection  
  Response wavelength
  Peak wavelength range
  Light intensity detection  
  Measuring range
  Measurement accuracy
  Other  
  Installation method
  Product Size
  Product weight

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