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MQ303B の電気的特性と機能
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MQ303BのメーカーはWinsen Electronicsです、この部品の機能は「Alcohol Sensor」です。 |
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製品の詳細 ( Datasheet PDF )
| 部品番号 MQ303B |
| 部品説明 Alcohol Sensor |
| メーカ Winsen Electronics |
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Zhengzhou Winsen Electronics Technology Co., Ltd
www.winsensor.com
MQ303B Alcohol Sensor
Character
* High sensitivity
* Fast response and resume
* Long life and low cost
* Mini Size
Application
MQ303B is semiconductor sensor for Alcohol detection.
It has good sensitivity and fast response to alcohol,
suitable for portable alcohol detector.
Configuration
Technical Data
Model No.
MQ303B
Sensor Type
Semiconductor
Standard Encapsulation
Metal
Detection Gas
Alcohol
Concentration
20-1000ppm Alcohol
Heater Voltage V H
0.9V ± 0.1V AC or DC
Loop Voltage Vc
≤6V DC
Standard
Circuit
Conditions
Load
RL
Resistance
Heater
Resistance
RH
Adjustable
4.5Ω ± 0.5 Ω Room Tem.
Heater Current IH
120±20mA
Heater Power PH
≤ 140 mW
Sensor
PS
Consumption
≤10 mW
Sensing
Character 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
Preheat time
Vc:3.0 V±0.1 V DC
VH: 0.9 V±0.1 V DC
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)
Tel: 86-371-67169097 Fax: 86-371-60932988
Email: sales@winsensor.com
1 Page
Zhengzhou Winsen Electronics Technology Co., Ltd
www.winsensor.com
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: 86-371-67169097 Fax: 86-371-60932988
Email: sales@winsensor.com
3Pages
合計 : 3 ページ |
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データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
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| 部品番号 | 部品説明 | メーカ |
| MQ303A | Alcohol Sensor |  ETC |
| MQ303A | Alcohol Sensor |  Hao-Electronic |
| MQ303B | Alcohol Sensor | Winsen Electronics |