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ZPH02 Datasheet(PDF) 7 Page - Zhengzhou Winsen Electronics Technology Co., Ltd.

Part No. ZPH02
Description  Particles Sensor
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Manufacturer  WINSEN [Zhengzhou Winsen Electronics Technology Co., Ltd.]
Direct Link  https://www.winsen-sensor.com/
Logo WINSEN - Zhengzhou Winsen Electronics Technology Co., Ltd.

ZPH02 Datasheet(HTML) 7 Page - Zhengzhou Winsen Electronics Technology Co., Ltd.

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Zhengzhou Winsen Electronics Technology Co., Ltd
www.winsen-sensor.com
Tel: 86-371-67169097/67169670 Fax: 86-371-60932988
Email: sales@winsensor.com
Leading gas sensing solutions supplier in China!
5
Remarks
The ZPH02's two mode settings can only be performed before the sensor is normally powered on.
Please make a hardware connection in advance. Pin5 can only be used as signal in UART mode and
it does not assume the module power supply GND function, otherwise the power supply failure
will cause the module to be irreparably damaged.
PM2.5 output wave in PWM mode
Fig6.PM2.5 output wave in PWM mode
Remarks:1.LT is the pulse width of low level in one period.(5-500Ms)
2.UT is the pulse width of one period(1s)
3.Low pulse rate RT: RT=LT/ UT x100% range(0.5%-50%)
The relationship between low pulse rate of output and particle concentration
Fig7.The relationship of PM2.5 low pulse rate of output and particle concentration
Remark: People usually use different levels (best, good, bad, worst) to describe the air quality condition.
Recommended solution: Best:0.00%-4.00%
Good:4.00%-8.00%
Period(1s)
Low level time(100ms)
Low pulse rate %
Low pulse rate=10%
Low pulse rate=30%
Low level time(300ms)
Period(1s)


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