MQ-8 데이터시트 PDF

MQ-8 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.

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HANWEI ELETRONICS CO.,LTD

MQ-8

http://www.hwsensor.com

TECHNICAL DATA

MQ-8 GAS SENSOR

FEATURES

* High sensitivity to Hydrogen (H2)

* Small sensitivity to alcohol, LPG,cooking fumes

* Stable and long life

APPLICATION

They are used in gas leakage detecting equipments in family and industry, are suitable for

detecting of Hydrogen (H2), avoid the noise of alcohol and cooking fumes, LPG,CO.

SPECIFICATIONS

A. Standard work condition

Symbol

Parameter name

Technical condition

Remarks

Vc Circuit voltage

5V±0.1

AC OR DC

VH Heating voltage

PL Load resistance

RH Heater resistance

5V±0.1

10KΩ

31±5%

ACOR DC

Room Tem

PH Heating consumption

B. Environment condition

less than800mW

Symbol

Tao

Parameter name

Using Tem

Technical condition

-10℃-50℃

Remarks

Tas Storage Tem

-20℃-70℃

RH Related humidity

less than 95%Rh

O2

Oxygen concentration

21%(standard condition)Oxygen

minimum value is

concentration can affect sensitivity over 2%

C. Sensitivity characteristic

Symbol

Rs

Parameter name

Sensing Resistance

Technical parameter

10KΩ- 60KΩ

(1000ppm H2)

Ramark 2

Detecting concentration

scope：

100-10000ppm

α

(1000ppm/

Concentration slope rate

≤0.6

Hydrogen (H2)

500ppmH2)

Standard

detecting

condition

Temp: 20℃±2℃ Vc:5V±0.1

Humidity: 65%±5% Vh: 5V±0.1

Preheat time

Over 24 hour

D. Structure and configuration, basic measuring circuit

Parts

1 Gas sensing

layer

2 Electrode

3 Electrode line

4 Heater coil

5 Tubular ceramic

6 Anti-explosion

network

7 Clamp ring

8 Resin base

9 Tube Pin

Materials

SnO2

Au

Pt

Ni-Cr alloy

Al2O3

Stainless steel gauze

(SUS316 100-mesh)

Copper plating Ni

Bakelite

Copper plating Ni

Configuration A

Fig. 1

Configuration B

Fig.2

A向

TEL: 86-371- 67169070 67169080 FAX: 86-371-67169090

A向

E-mail: sales@hwsensor.com

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