Datasheet > MQ-135

MQ-135

更新时间： 2024-11-28 01:25:11

品牌	Logo	应用领域
汉威 - HANWEI		/
页数	文件大小	规格书
3页	334K
描述
Wide detecting scope

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中文翻译

获取价格

数据手册

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MQ-135 数据手册

HANWEI ELECTRONICS CO.,LTD

MQ-135

http://www.hwsensor.com

TECHNICAL DATA

MQ-135 GAS SENSOR

FEATURES

Wide detecting scope

Stable and long life

Fast response and High sensitivity

Simple drive circuit

APPLICATION

They are used in air quality control equipments for buildings/offices, are suitable for detecting

of NH3,NOx, alcohol, Benzene, smoke,CO₂,etc.

SPECIFICATIONS

A. Standard work condition

Symbol

V_H

R_L

Parameter name

Circuit voltage

Heating voltage

Load resistance

Heater resistance

Technical condition

5V±0.1

can adjust

33Ω±5%

Remarks

AC OR DC

ACOR DC

R_H

Room Tem

P_H

Heating consumption

B. Environment condition

Parameter name

less than 800mw

Symbol

Tao

Technical condition

-10℃-45℃

Remarks

Using Tem

Tas

Storage Tem

-20℃-70℃

R_H

O₂

Related humidity

Oxygen concentration

less than 95%Rh

21%(standard condition)Oxygen

concentration can affect sensitivity

minimum value is

over 2%

C. Sensitivity characteristic

Symbol

Parameter name

Technical parameter

Ramark 2

Sensing

Resistance

Detecting concentration

scope：

30KΩ-200KΩ

(100ppm NH₃)

10ppm-300ppm NH₃

10ppm-1000ppm

Benzene

10ppm-300ppm

Alcohol

Concentration

Slope rate

(200/50)

NH₃

Standard

Detecting

Condition

Preheat time

≤0.65

Temp: 20℃±2℃

Humidity: 65%±5% Vh: 5V±0.1

Vc:5V±0.1

Over 24 hour

D. Structure and configuration, basic measuring circuit

Parts

Gas sensing

layer

Materials

SnO₂

Electrode

Electrode line

Heater coil

Tubular ceramic

Anti-explosion

network

Clamp ring

Resin base

Tube Pin

Ni-Cr alloy

Al₂O₃

Stainless steel gauze

(SUS316 100-mesh)

Copper plating Ni

Bakelite

Copper plating Ni

Fig.2

Fig. 1

Configuration A

Configuration B

A向

Structure and configuration of MQ-135 gas sensor is shown as Fig. 1 (Configuration A or B), sensor composed

by micro AL2O3 ceramic tube, Tin Dioxide (SnO2) sensitive layer, measuring electrode and heater are fixed into a

crust

made by plastic and stainless steel net. The heater provides necessary work conditions for work of

TEL: 86-371-67169070 67169080

FAX: 86-371-67169090

E-mail: sales@hwsensor.com

12 3

中文翻译

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