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for Ozone. MQ131 Datasheet

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for Ozone. MQ131 Datasheet






MQ131 Ozone. Datasheet pdf. Equivalent




MQ131 Ozone. Datasheet pdf. Equivalent





Part

MQ131

Description

Semiconductor Sensor for Ozone



Feature


Henan Hanwei Electronics Co., Ltd www.h wsensor.com MQ131 Semiconductor Sensor for Ozone Sensitive material of MQ131 gas sensor is SnO2, which with lower co nductivity in clean air. When Ozone gas exists. The sensor’s conductivity is more higher along with the gas concent ration rising. Please use simple electr ocircuit, Convert change of conductivit y to correspond outp.
Manufacture

Henan Hanwei

Datasheet
Download MQ131 Datasheet


Henan Hanwei MQ131

MQ131; ut signal of gas concentration. MQ131 ga s sensor has high sensitity to Ozone, a lso sensitive to CL2, NO2, etc. Charact er * Good sensitivity to Ozone in wide range * High sensitivity to Ozone * Lon g life and low cost * Simple drive circ uit Application * Domestic Ozone concen tration overload Detector * Industrial Ozone concentration overload Detector * Portable Ozone co.


Henan Hanwei MQ131

ncentration overload Detector Configurat ion Technical Data Model No. Sensor Ty pe Standard Encapsulation Detection Gas Concentration Loop Voltage Circuit Hea ter Voltage Load Resistance Heater Resi stance Heater Character consumption Sen sing Resistance Sensitivity Slope Vc VH RL RH PH Rs S α MQ131 Semiconductor B akelite (Black Bakelite) Ozone 10-1000p pm Ozone ≤24V DC 5..


Henan Hanwei MQ131

0V±0.2V AC or DC Basic test loop Vc VR L RL VH GND Adjustable The above is b asic test circuit of the sensor. 31Ω 3Ω(Room Tem.) ≤900mW 50KΩ-50 0KΩ(in 50ppm O3) Rs(in air)/Rs(in 50p pm O3)≥3 (R50ppm/R10ppm O3) 20℃±2 ;65%±5%RH Vc:5.0V±0.1V; VH: 5.0 V±0.1V Over 48 hours 2 2 The sensor n eed to be put 2 voltage, heater voltage (VH) and test voltage (VC) . VH used to supply .

Part

MQ131

Description

Semiconductor Sensor for Ozone



Feature


Henan Hanwei Electronics Co., Ltd www.h wsensor.com MQ131 Semiconductor Sensor for Ozone Sensitive material of MQ131 gas sensor is SnO2, which with lower co nductivity in clean air. When Ozone gas exists. The sensor’s conductivity is more higher along with the gas concent ration rising. Please use simple electr ocircuit, Convert change of conductivit y to correspond outp.
Manufacture

Henan Hanwei

Datasheet
Download MQ131 Datasheet




 MQ131
Henan Hanwei Electronics Co., Ltd
www.hwsensor.com
MQ131 Semiconductor Sensor for Ozone
Sensitive material of MQ131 gas sensor is SnO2, which with lower conductivity in clean air. When
Ozone gas exists. The sensor’s conductivity is more higher along with the gas concentration rising.
Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas
concentration.
MQ131 gas sensor has high sensitity to Ozone, also sensitive to CL2, NO2, etc.
Character
* Good sensitivity to Ozone in wide range
* High sensitivity to Ozone
* Long life and low cost
* Simple drive circuit
Configuration
Application
* Domestic Ozone concentration overload Detector
* Industrial Ozone concentration overload Detector
* Portable Ozone concentration overload Detector
Technical Data
Basic test loop
Model No.
MQ131
Sensor Type
Semiconductor
Standard Encapsulation
Bakelite (Black Bakelite)
Detection Gas
Ozone
Concentration
10-1000ppm Ozone
Loop Voltage Vc
24V DC
Circuit
Heater Voltage
Load
Resistance
VH
RL
5.0V±0.2V AC or DC
Adjustable
Heater
Resistance
RH
31±3Room Tem.
Character
Heater
consumption
Sensing
Resistance
PH
Rs
900mW
50K-500K(in 50ppm O3)
Sensitivity
Slope
S Rs(in air)/Rs(in 50ppm O3)3
α (R /R50ppm 10ppm O3)
Tem. Humidity
20±2℃;65%±5%RH
Condition Standard test circuit
Vc:5.0V±0.1V
VH: 5.0V±0.1V
Preheat time
Over 48 hours
Power of Sensitivity body(Ps): Ps=Vc2×Rs/(Rs+RL)2
Resistance of sensor(Rs): Rs=(Vc/VRL-1)×RL
Vc VRL
RL
VH
GND
The above is basic test circuit of the sensor.
The sensor need to be put 2 voltage,
heater voltageVHand test voltageVC.
VH used to supply certified working
temperature to the sensor, while VC used
to detect voltage (VRL) on load resistance
RLwhom is in series with sensor. The
sensor has light polarity, Vc need DC
power. VC and VH could use same power
circuit with precondition to assure
performance of sensor. In order to make
the sensor with better performance,
suitable RL value is needed:
Tel: 86-371-67169070/80
Fax: 86-371-67169090
Email: sales@hwsensor.com
Free Datasheet http://www.datasheet4u.com/




 MQ131
Henan Hanwei Electronics Co., Ltd
Sensitivity Characteristics
www.hwsensor.com
Influence of Temperature/Humidity
Fig.1 shows the typical sensitivity characteristics of
the MQ131, ordinate means resistance ratio of the sensor
(Rs/Ro), abscissa is concentration of gases. Rs means
resistance in different gases, Ro means resistance of
sensor in 50ppm CL2. All test are under standard
test conditions.
Fig.2 shows the typical temperature and humidity
characteristics. Ordinate means resistance ratio
of the sensor (Rs/Ro), Rs means resistance of sensor
in 50ppm Ozone under different tem. and humidity.
Ro means resistance of the sensor in environment of
50ppm Ozone, 20/65%RH
Structure and configuration
Structure and configuration of MQ131 gas sensor is shown as Fig. 3, 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 sensitive components. The enveloped MQ-4 have 6 pin, 4
of them are used to fetch signals, and other 2 are used for providing heating current.
Tel: 86-371-67169070/80
Fax: 86-371-67169090
Email: sales@hwsensor.com
Free Datasheet http://www.datasheet4u.com/




 MQ131
Henan Hanwei Electronics Co., Ltd
www.hwsensor.com
Notification
1 Following conditions must be prohibited
1.1 Exposed to organic silicon steam
Organic silicon steam cause sensors invalid, sensors must be avoid exposing to silicon bond,
fixature, silicon latex, putty or plastic contain silicon environment
1.2 High Corrosive gas
If the sensors exposed to high concentration corrosive gas (such as H2Sz, SOX, Cl2, HCl etc), it will
not only result in corrosion of sensors structure, also it cause sincere sensitivity attenuation.
1.3 Alkali, Alkali metals salt, halogen pollution
The sensors performance will be changed badly if sensors be sprayed polluted by alkali metals salt
especially brine, or be exposed to halogen such as fluorin.
1.4 Touch water
Sensitivity of the sensors will be reduced when spattered or dipped in water.
1.5 Freezing
Do avoid icing on sensor’surface, otherwise sensor would lose sensitivity.
1.6 Applied voltage higher
Applied voltage on sensor should not be higher than stipulated value, otherwise it cause down-line or
heater damaged, and bring on sensors’ sensitivity characteristic changed badly.
1.7 Voltage on wrong pins
For 6 pins sensor, if apply voltage on 13 pins or 46 pins, it
will make lead broken, and without signal when apply on 24 pins
2 Following conditions must be avoided
2.1 Water Condensation
Indoor conditions, slight water condensation will effect sensors performance lightly. However, if water
condensation on sensors surface and keep a certain period, sensor’ sensitivity will be decreased.
2.2 Used in high gas concentration
No matter the sensor is electrified or not, if long time placed in high gas concentration, if will affect
sensors characteristic.
2.3 Long time storage
The sensors resistance produce reversible drift if it’s stored for long time without electrify, this drift is
related with storage conditions. Sensors should be stored in airproof without silicon gel bag with clean air.
For the sensors with long time storage but no electrify, they need long aging time for stbility before using.
2.4 Long time exposed to adverse environment
No matter the sensors electrified or not, if exposed to adverse environment for long time, such as
high humidity, high temperature, or high pollution etc, it will effect the sensors performance badly.
2.5 Vibration
Continual vibration will result in sensors down-lead response then repture. In transportation or
assembling line, pneumatic screwdriver/ultrasonic welding machine can lead this vibration.
2.6 Concussion
If sensors meet strong concussion, it may lead its lead wire disconnected.
2.7 Usage
For sensor, handmade welding is optimal way. If use wave crest welding should meet the following
conditions:
2.7.1 Soldering flux: Rosin soldering flux contains least chlorine
2.7.2 Speed: 1-2 Meter/ Minute
2.7.3 Warm-up temperature: 100±20
2.7.4 Welding temperature: 250±10
2.7.5 1 time pass wave crest welding machine
If disobey the above using terms, sensors sensitivity will be reduced.
Tel: 86-371-67169070/80
Fax: 86-371-67169090
Email: sales@hwsensor.com
Free Datasheet http://www.datasheet4u.com/






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