(PDF) MQ303A Datasheet - Alcohol Sensor

Número de pieza	MQ303A
Descripción	Alcohol Sensor
Fabricantes	ETC
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No Preview Available ! MQ303A Alcohol Sensor Character * High sensitivity * Fast response and resume * Long life and low cost * Mini Size Application MQ303A is semiconductor sensor is for Alcohol detection, It has good sensitivity and fast response to alcohol, suitable for portable alcohol detector. Configuration Technical Data Model No. MQ303A Sensor Type Semiconductor Standard Encapsulation Metal Detection Gas Alcohol Concentration 20-1000ppm Alcohol Heater Voltage V H Loop Voltage Vc 0.9V ± 0.1V AC or DC ≤6V DC Standard Circuit Conditions Load RL Resistance Heater Resistance RH Adjustable 4.5Ω ± 0.5 Ω（Room Tem.） Heater Current Heater Power Sensor Consumption IH PH PS 120±20mA ≤ 140 mW ≤10 mW Character Sensing Resistance Rs 4KΩ-400KΩ(in air) Sensitivity S Rs(in air)/Rs(125ppm Alcohol)≥3 Slope α 0.50 ± 0.15(R300ppm/R100ppm Alcohol) Tem. Humidity 20℃±2℃；65%±5%RH Condition Standard test circuit Vc:3.0 V±0.1 V DC ； VH: 0.9 V±0.1 V DC Preheat time Over 48 hours Sensing element of the semiconductor sensor is a micro-ball, heater and metal electrode are inside, and the sensing element is installed in anti-explosion double 100 mesh metal case (see the above) 1 page

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PDF MQ303A Data sheet ( Hoja de datos )