MQ-4 Gas Rs Methane Gas R Semiconductor Gas R

Combustible gas alarm special r MQ-4Sensitive material used in the clean air low conductivity tin oxide(SnO2). When present in the envment of flammable gas r, conductivity r with increasing concentration of combustible gases in air increases. Use simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal.MQ-4Gas rHigh methane sensitivity, propane, and has a good sensitivity. This r can detect a variety of combustible gases, especiallyNatural gas, Is a low-cost rs for a variety of applications.

Combustible gas alarm special r MQ-4 and Applications:

·In a wide concentration range of combustible gas with good sensitivity

CorrectMethaneHigh sensitivity

* Long life, low cost

· Simple drive circuit can be

·Household gas leak alarm

·Industrial combustible gas alarm

·Portable gas detector

The main technical parameters:

Product number

MQ-4

Product type

Semiconductor gas r

Standard package

Bakelite (black bakelite)

Detection of gas

Natural gas, methane

Detectable concentration

300-10000ppm (methane, natural gas)

Circuit voltage (Vc)

24V DC

Heating voltage (VH)

5.0V 0.2V ACorDC

Load resistance (RL)

Adjustable

Heating resistors (RH)

31 3 (at room temperature)

Heating consumption (PH)

900mW

Sensing Resistance (Rs)

2K-20K (in 5000ppm CH4)

Sensitivity (S)

Rs (in air) / Rs (5000ppm methane) 5

Concentration gradient ()

0.6(R5000ppm/ R3000ppmCH4)

Temperature, humidity

202 ; 65% 5% RH

Standard test circuit

Vc: 5.0V 0.1V;

VH: 5.0V 0.1V

Warm-up time

Le than 48 hours

About shipping
Shipping and Packaging All itwill be double checked and well packed before sending.Itwill be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for e areas,it may take a little longer). 

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