Electronic Components Datasheet Search
Selected language     English  ▼
Advanced Search

              



Part Name


MQ-135 Datasheet(PDF) 1 Page - Hanwei Electronics Group Corporation

Part No. MQ-135
Description  Wide detecting scope
Download  3 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  HANWEI [Hanwei Electronics Group Corporation]
Homepage  https://www.hwsensor.com/
Logo 

   
 1 page
background image
TEL: 86-371-67169070 67169080
FAX: 86-371-67169090
E-mail: sales@hwsensor.com
TECHNICAL DATA
MQ-135 GAS SENSOR
FEATURES
Wide detecting scope
Fast response and High sensitivity
Stable and long life
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
Parameter name
Technical
condition
Remarks
Vc
Circuit voltage
5V±0.1
AC OR DC
VH
Heating voltage
5V±0.1
ACOR DC
RL
Load resistance
can adjust
RH
Heater resistance
33Ω±5%
Room Tem
PH
Heating consumption
less than 800mw
B. Environment
condition
Symbol
Parameter name
Technical condition
Remarks
Tao
Using Tem
-10℃-45℃
Tas
Storage Tem
-20℃-70℃
RH
Related humidity
less than 95%Rh
O2
Oxygen concentration
21%(standard condition)Oxygen
concentration can affect sensitivity
minimum
value is
over 2%
C. Sensitivity characteristic
Symbol
Parameter name
Technical parameter
Ramark 2
Rs
Sensing
Resistance
30KΩ-200KΩ
(100ppm NH3 )
α
(200/50)
NH3
Concentration
Slope
rate
≤0.65
Standard
Detecting
Condition
Temp: 20℃±2℃
Vc:5V±0.1
Humidity: 65%±5%
Vh: 5V±0.1
Preheat time
Over 24 hour
Detecting concentration
scope:
10ppm-300ppm NH3
10ppm-1000ppm
Benzene
10ppm-300ppm
Alcohol
D. Structure and configuration, basic measuring circuit
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
Parts
Materials
1
Gas sensing
layer
SnO2
2
Electrode
Au
3
Electrode line
Pt
4
Heater coil
Ni-Cr alloy
5
Tubular ceramic
Al2O3
6
Anti-explosion
network
Stainless steel gauze
(SUS316 100-mesh)
7
Clamp
ring
Copper
plating Ni
8
Resin
base
Bakelite
9
Tube Pin
Copper plating Ni
A向
A向
Fig. 1
Configuration A
Configuration B
Fig.2
HANWEI EL
ECTRONICS CO.,LTD
MQ-135
http://www.hwsensor.com




Html Pages

1  2  3 


Datasheet Download




Link URL

Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Bookmark   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl