Product Name: dust sensor (air quality sensor)
Specification and model: ppd42nj
Brand: Shinyei model: PD4NS/ PD42NS/ PPD42NJ Type: dust production process: integrated output signal: digital type
Air purifier, air conditioner, ventilator, environmental monitoring, etc
Input voltage: DC5V
Current consumption: less than 90mA
Working temperature: - 10 ℃ - 45 ℃
Working humidity: less than 95% RH
Storage temperature: - 30 ℃ - 60 ℃
Particle diameter: more than 1 μ M
Output mode: PWM
Response time: less than 1 minute
1 Counter The absolute number of particles per unit volume is detected
2. From cigarette smoke particles to pollen and house dust, particles above 1 μ M can be detected with high sensitivity and stability
3. Small size, light weight and convenient installation
W59 * h45 * D22 (mm), weight: 30g
4. Built in air flow Generator The external atmosphere can be attracted automatically
5. It can be easily maintained for a long time Air quality sensor Characteristics of
Application of air quality sensor
1. This product is made for the purpose of household appliances. For medical machines, disaster prevention machines, etc., Gao'an
Please do not use it when it is used for completeness, dependency, etc.
① Due to this product Air quality sensor The Joule heat generated by the resistance will produce an updraft inside the housing, so please use the vertical direction
Using the posture of.
② Keep away from artificial air flow, such as fan. When used in air purifier, the front and rear of fan cannot be installed,
Optional one side of the shell can be installed, but the air vent should be reserved on the shell to ensure that the external air flow can flow in;
③ Pay attention to avoid sticky particles such as oil entering the module during installation. When such particles adhere to the optical components, they will
There is a fault.
④ When the module is damp, its normal function will be affected, so it should be avoided.
3. If the updraft inside the housing is disordered, it will affect the sensor characteristics. Please consider eliminating the transmission
The air pressure around the sensor.
Please do not clean the plastic lens once every 4 months
When using organic solvent or detergent, please do not scratch the lens surface with hard objects.
For the cleaning of lens surface, you can wipe it with cotton stick dipped in clean water, and then wipe it with dry cotton stick.
5. The adjustment and inspection of this product are carried out with the lens window covered.
Please prepare the shading cover that can cover the lens window when using.
6. When the power supply of the product is in the plug-in position, the pulse voltage is controlled below 30mV.
This led is especially used to control the route when wiring
The given pulse should not exceed 30mV.