MQ-135 Datasheet PDF - Hanwei
| Part Number | MQ-135 | |
| Description | Gas Sensor | |
| Manufacturers | Hanwei | |
| Logo |  |
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www.DHaAtaNSWheEeI tE4LUC.cEoTmRONICS CO.,LTD
TECHNICAL DATA
MQ-135
http://www.hwsensor.com
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
RL Load resistance
RH Heater resistance
5V±0.1
can adjust
33Ω ±5%
ACOR DC
Room Tem
PH Heating consumption
B. Environment condition
less than 800mw
Symbol
Tao
Parameter name
Using Tem
Technical condition
-10℃…+45℃
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
α
(200/50)
NH3
Standard
Detecting
Condition
Parameter name
Sensing
Resistance
Concentration
Slope rate
Technical parameter
30KΩ -200KΩ
(100ppm NH3 )
≤ 0.65
Temp: 20℃±2℃ Vc:5V±0.1
Humidity: 65%±5% Vh: 5V±0.1
Remark 2
Detecting concentration
scope：
10ppm-300ppm NH3
10ppm-1000ppm
Benzene
10ppm-300ppm
Alcohol
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
AПт AПт
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: [email protected]
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for MQ-135 electronic component. |
| Information | Total 2 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Product Image and Detail view |  1. - Gas Sensor - Hanwei [ Learn More ] | |
| Download | [ MQ-135.PDF Datasheet ] | |
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