TIANJIN ZWINSOFT TECHNOLOGY CO.,LTD Atmospheric aerosol sensor instructions ZW-PM Sensor

Description: ZW-PM Sensor is one of the Atmospheric aerosol Sensors that independently developed by our company. It adopts the principle of laser scattering and can accurately detect and calculate the concentration of suspended particles in the per unit volume air with different particle sizes. It can realize the real-time output of the mass concentration value of PM2.5, PM10 and TSP . Application: ✮ Atmospheric environment detection and early warning system ; ✮ Indoor and outdoor air quality testing ; ✮ Online monitoring of road dust ; ✮ Construction site online dust monitor

Specifications ZW-PM Sensor Detecting principle Light scattering method（full angle） Detecting range detecting accuracy Preset sampling flow rate （Nidec022 pump) Data refresh frequency Working condition Storage condition

Note： ① Please do not place the sensor in a high concentration environment for too long . Otherwise, the life span of the sensor will be severely depleted . ② GRIMM as a reference, 25±2℃, 50± 10% RH are environmental conditions. ③ Our aerosol sensor has a built-in air pump interface, which drives the Nedic022 ， The factory preset flow is 1L/min . ④ High humidity will interfere the result , Please dehumidify on time . Interface definition： The power communicat

Description Main power input terminal (12V) Output end of air pump power supply (12V) Fan power output (5V) Power grounding terminal (GND) Air pump and fan speed control input (PWM) Air pump and fan speed feedback end (FG) ） RS485 communication cable A RS485 communication cable B 1 The air pump and fan can only be connected . 2 When connecting,please strictly follow the power input and output

Connector specifications： Function Power communication Modbus communication protocol： 1.Protocol summery： 1） modbus-RTU protocol format . 2） The transmitted data is of float type ,with low in the first . 3） Baud：9600; Data bits：8，stop bit：1，check bit：none . 4） After power-on initialization, the system automatically starts measuring data and waits for the host to query data . Read length

1 CRC is Modbus-CRC16 2 The transmitted data is of float type ,with low in the first .