Technology Methane, Liquefied Petroleum Gas, Hydrogen Gas Detection R

Semiconductor hydrogen rsMQ-8 gas-sensitive material used in the clean air low conductivity tin oxide(SnO2). When the r is exposed in the presence of hydrogen gas, the 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-8Gas rHydrogenHigh sensitivity,Monitoring other hydrogen-containing gas is also very good. Such rsIt can detect a variety of hydrogen-containing gases, in particularCity Gas,Is a low-cost rs for a variety of applications.

and Applications:

·For over a wide concentration rangeHydrogenGood sensitivity

* Long life, low cost

· Simple drive circuit can be

·Household gas leak alarm

·Industrial combustible gas alarm

·Portable gas detector

The main technical :

Product number

MQ-8

Product type

Semiconductor gas r

Standard package

Bakelite (black bakelite)

Detection of gas

Hydrogen

Detectable concentration

100-1000ppm (Hydrogen)

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 1000ppm H2)

Sensitivity (S)

Rs (in air) / Rs (1000ppmHydrogen) 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 it will be double checked and well packed before sending.It will be dispatched within 2 business days ar buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for remote areas,it may take a little longer). 

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