This is a multifunction air quality monitor that can be detected not only the concentration of particles and formaldehyde but also the value of temperature and humidity. As the particle concentration sensor it can be used to obtain the number of suspended particles in the air by laser. It also integrates in it an electrochemical probe for formaldehyde and an one- chip sensor for temperature and humidity. The sensor can be inserted into variable instruments related to the environment parameters in the air or other environmental improvement equipments to provide correct data in time.
Working principle:Laser scattering principle is used for such sensor, i.e. produce scattering by using laser to radiate suspending particles in the air, then collect scattering light in a certain degree, and finally obtain the curve of scattering light change with time. In the end, equivalent particle diameter and the number of particles with different diameter per unit volume can be calculated by microprocessor based on MIE theory. Please find the functional diagram of each part of sensor from Figure 1 as follows. The function of formaldehyde detector is based on the electrochemical theory and math algorithm.
|Features|Zero false alarm rateReal-time responseCorrect dataMinimum distinguishable particle diameter :0.3 micrometerHigh anti-interference performance because of the patent structure of six sides shieldingOptional direction of air inlet and outlet in order to adapt the different designConcentration of Formaldehyde outputTemperature and Humidity output
|Specification|Operating Voltage: 5.0VDCActive Current: 100 mAStandby Current: ≤200 uAInterface Level: L &;lt;0.8V@3.3V; H&;gt; 2.7V@3.3VParticle Range of measurement: 0.3 ~ 1.0μm; 1.0 ~ 2.5μm; 2.5 ~ 10μmParticle Counting Efficiency: firstname.lastname@example.orgμm 98%@&;gt;=0.5μmParticle Effective Range (PM2.5 standard): 0 ~ 500μg/mParticle Maximum Range (PM2.5 standard)*: &;gt;0 ~ 2000ug / m³Particle Resolution: 1ug / m³Particle Maximum Consistency Error (PM2.5 standard data)*:±10%@100~500μg/m³±10μg/m³@0~100μg/m³Particle Standard Volume: 0.1 LFormaldehyde Effective Range: 0 ~ 1 mg / m³Formaldehyde Maximum Range: 0 ~ 2 mg / m³Formaldehyde Resolution: 0.001Formaldehyde Maximum Consistency Error: &;lt;± 5%Temperature Maximum Range: -10~50 ?Temperature Resolution: 0.1 ?Temperature Maximum Error: ± 0.5 ?Humidity Maximum Range: 0 ~ 99%Humidity Resolution: 0.1%Humidity Maximum Error: ± 2%Weight: 50gDefault Baud rate: 9600bpsTotal Response time: ≤ 10sOperating Temperature Range: -10 ~ +60 ?Working Humidity Range: 0~99%MTTF: ≥ 3 yearsDimension: 50 * 38 * 21 mm/1.97*1.50*0.83 inches
|Documents|Product WIKIMore Documents
|ShippingList|Air Quality Monitor (PM 2.5, Formaldehyde, Temperature & Humidity Sensor) x18-Pin Cable x1PM2.5 Adapter Board x1