2PCS MQ3 Alcohol Sensor Semiconductor Sensor for Alcohol

Product information

Description:

 

 

 

MQ3 Alcohol Sensor Semiconductor Sensor for Alcohol
    Descriptions:
    - Sensitive material of MQ-3 gas sensor is SnO2, which with lower conductivity in clean air. When the target alcohol gas exist, The sensors 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.
    - MQ-3 gas sensor has high sensitity to Alcohol, and has good resistance to disturb of gasoline, smoke and vapor. The sensor could be used to detect alcohol with different concentration, it is with low cost and suitable for different application

 

Character
    -  Good sensitivity to alcohol gas
    -  Long life and low cost
    - Simple drive circuit

 

Application
    - Vehicel alcohol detector
    -  Portable alcohol detector

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

Model No.

MQ-3

Sensor Type

Semiconductor

Standard Encapsulation

Bakelite (Black Bakelite)

Detection Gas

Alcohol gas

Concentration

0.04-4mg/l alcohol

Circuit

Loop Voltage

Vc

≤24V  DC

Heater Voltage

VH

5.0V±0.2V AC or DC

Load Resistance

RL

Adjustable

Character

Heater Resistance

RH

31Ω±3ΩRoom Tem.

Heater consumption

PH

≤900mW

Sensing Resistance

Rs

2KΩ-20KΩ(in 0.4mg/l alcohol )

Sensitivity

S

Rs(in air)/Rs(0.4mg/L Alcohol)≥5

Slope

α

≤0.6(R300ppm/R100ppm Alcohol)

Condition

Tem.  Humidity

20±265%±5%RH

Standard test circuit

Vc:5.0V±0.1V

           

   VH: 5.0V±0.1V

Preheat time

Over 48 hours

 
 


 

 


 

Payment

Payment

Payable To

Note

PayPal

Paypal

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Shipping Policy

Delivery Time

We ship to worldwide, it usually takes 10-30 Business Days to delivery.

Shipping address

We ship to your PayPal address. Please, make sure to provide us with correct, precise, and detailed shipping Address.

Send Time

Items will be shipped within 1 to 3 business days upon payment received or cleared.

Note

If you don't receive items over 30 business days, please notify us via eBay message.

Return Policy
We appreciate your business and offer an instant 7 days return policy.(7 days after receive the item). The returned item has to be in its original condition. We are able to refund your money without shipping cost.  
Contact us
For anything about product, price, shipping or order status, please contact us via eBay message.
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