Technical indicators
Product Type
MQ-5
Product Type
Semiconductor gas sensor
Standard package
Bakelite (black bakelite)
Detection of gas
Liquefied petroleum gas, methane, coal gas, LPG
Detectable concentration
300-10000ppm ( methane, propane, butane, hydrogen)
Standard circuit conditions
Circuit voltage
V c
≤ 24V DC
Heating voltage
V H
5.0V ± 0.2V ACorDC
Load Resistance
R L
Adjustable
Under standard test conditions sensing Characteristics
Heating resistor
R H
31 ± Omega 3 Omega (room temperature)
Heating power
P H
≤ 900mW
Sensitive surface resistivity
R s
2K Omega 20K Omega (in 2000 ppm C 3 H 8 )
Sensitivity
S
Rs (in air) / Rs (1000ppm isobutane ) ≥5
Concentration slope
α
≤ 0.6 (R 1000 ppm / R500 ppm H 2 )
Standard Test Conditions
Temperature, humidity,
20 ° C ± 2 ° C; 65% ± 5% RH
Standard test circuit
Vc: 5.0V ± 0.1V ;
V H : 5.0V ± 0.1V
Warm-up time
Not less than 48 hours