MQ-2 gas sensor detects smoke methane butane analog sensor (H1B5)

First size : 32mm X22mm X27mm length X width X height

Second the main chip : LM393 ZYMQ-2 gas sensor

Third the working voltage : DC 5 V

Four characteristics:

1 having a signal output instruction .

2 the dual signal output ( analog output and TTL level output )

3 0 ~ 5V analog output voltage the higher the concentration the higher voltage.

4 liquefied petroleum gas natural gas city gas smoke have better sensitivity.

5 with a long life and reliable stability

6 rapid response and recovery characteristics

V. Application :

For home or factory gas leakage monitoring device suitable for liquefied petroleum gas butane propane methane alcohol hydrogen smoke and other monitoring devices.

MQ-2 gas sensor parameters :





A. Standard Operating Conditions

Connection mode:
1 VCC: is connected to the positive pole (5V)
2 GND: with the negative electrode of the power
3 the DO:TTL switch signal output
4 AO: output signal

Symbol

Parameter name

Technical conditions

Remark

Vc

Circuit voltage

15V

AC or DC

VH

Heating voltage

5.0V 0.2 V

AC or DC

RL

Load Resistance

Adjustable

RH

Heating resistors

31 3

Room temperature

PH

Heating power

900mW

B. Environmental Conditions

Symbol

Parameter name

Technical conditions

Remark

Tao

Temperature

-10 -50

Tas

Storage temperature

-20 -70

RH

Relative humidity

Less than 95% RH

O2

Oxygen concentration

21% ( standard conditions )

Oxygen concentration can affect sensitivity

A minimum value greater than 2%

C. sensitivity characteristics

Symbol

Parameter name

Technical parameters

Remark

Rs

Sensitive surface resistivity

3K-30K

(1000ppm isobutane )

Probe concentration range

100ppm-10000ppm

LPG and propane

300ppm-5000ppm Butane

5000ppm-20000ppm methane

300ppm-5000ppm hydrogen

100ppm-2000ppm alcohol

(3000/1000)

Isobutane

Concentration slope

0.6

Standard Operating Conditions

Temperature : 20 2 Vc: 5.0V 0.1V

Relative humidity : 65% 5% Vh: 5.0V 0.1V

Warm-up time

No more than one hour




Packaging Details
Unit Type: lot (10 pieces/lot) Package Weight: 0.600kg (1.32lb.) Package Size: 5cm x 5cm x 5cm (1.97in x 1.97in x 1.97in)