Dust monitoring station: mainly suitable for construction sites, demolition sites, coal mines, industrial parks, and communities

1、 PM sensor

1. Laser technology (principle of light scattering, optical particle size cutting, no need for physical particle size cutters)

2. PM2.5/PM10/TSP three channel simultaneous output

3. Repeatability ≤ 10%, measurement accuracy ≤ 15%, resolution 1ug/m3;

4. Particle size range PM: 0-10000ug/m3;

5. Flow rate of 2.0L/min ± 5%, pump suction method, constant flow rate, temperature and humidity range of -40 to+123.8 ℃,<100% RH

6. Sampling time: default interval of 20 seconds (adjustable)

7. Customized 485 communication interface, standard MODBUS, TTL, customized

8. Calibration does not require frequent cross checking, it is recommended to calibrate once a year

9. Cleaning with optional blowing system

10. Power supply 12V

11. Host power consumption 10W

12. Operating environment -12 ℃~60 ℃; <90% RH (no condensation); 86~106kPa

13. Storage environment temperature: -20~80 ℃, humidity: 0~90% RH;

2、 Temperature and humidity monitoring unit

The temperature and humidity monitoring unit consists of a closed circuit composed of two conductors with different compositions. When there is a temperature gradient at both ends, current will flow through the circuit, and an electromotive force - thermoelectric potential - will exist between the two ends. Two homogeneous conductors with different compositions are thermoelectric electrodes, with the higher temperature end as the working end and the lower temperature end as the free end. When the temperature of the measured medium at the working end changes, the thermoelectric potential changes accordingly. By sending the thermoelectric potential to the computer for processing, the temperature value can be obtained. The humidity monitoring unit is generally made of polymer film capacitors. When the environmental humidity changes, the dielectric constant of the humidity sensitive capacitor changes, causing its capacitance to also change, thus obtaining humidity.

The product adopts standard 35mm card rails, industrial grade chips, and high-precision temperature and humidity probes to ensure excellent reliability, high precision, and interchangeability of the product. Adopting RS485 hardware interface (with lightning protection design), the protocol layer is compatible with the standard industrial Modbus Rtu protocol. Compatible with various host platforms (PC software, touch screen PLC、 Configuration King).

1. Temperature sensor range: -40 to+80 ℃ accuracy: ± 0.5 ℃

2. Humidity sensor range: 0-100% accuracy: ± 3%

3. DC power supply: 12VDC

4. Power consumption: 0.4W

5. Long term temperature stability: ≤ 0.1 ℃/Y

6. Long term humidity stability: ≤ 1%/Y

7. Output signal: RS485 (MONDBUS protocol)

3、 Wind speed and direction monitoring unit

The wind speed and direction sensor (transmitter) adopts high-precision magnetic sensing chip inside, and uses low inertia light metal wind vane to respond to wind direction, with good dynamic characteristics. The meteorological wind speed sensor (transmitter) adopts the traditional three-point cup meteorological wind speed sensor structure. The wind cup is made of carbon fiber material, which has high strength and good startup. The built-in signal processing unit in the cup can output corresponding wind speed signals according to user needs. It can be widely used in meteorology, oceanography, environment, airports, ports, laboratories, industrial and agricultural transportation and other fields.

4、 Noise sensor

The noise sensor is equipped with a capacitive electret microphone that is sensitive to sound. Sound waves cause the diaphragm inside the microphone to vibrate, resulting in a change in capacitance and producing a corresponding small voltage. This voltage is then converted into a 0-5V voltage, which is received by the data collector through A/D conversion and transmitted to the monitoring chip.

The sensors used by our company are high-sensitivity pickups. The power supply, sensing probe, and signal output are isolated, ensuring stable signals and high accuracy. It has the characteristics of wide measurement range, good linearity, convenient use, easy installation, and long transmission distance.

1. DC power supply: 12V-24V DC

2. Power consumption: 0.4W

3. Output signal: RS485 output

4. Response time: ≤ 2S

5. Measurement range: 30dB-130dB

6. Resolution: 0.1dB

7. Measurement error: 3% F.s

8. Frequency weighting characteristics: A-weighted; Frequency response: 35Hz-20Khz

9. Working temperature: -20-60 ℃

5、 Atmospheric pressure sensor

1. Measurement range: 10-1200mbar

2. Power consumption (RS485 output):<4W

3. DC power supply (default): 12-24V DC

4. Resolution (air pressure): 0.012 mbar

5. Accuracy (air pressure): ± 1.5mbar (@ 25 ℃ 1035mbar)

6. Scope of work: 0-40 ℃/0-80RH%

7. Output signal: RS485 (Mondbus protocol)

6、 IoT access server

1. High performance

Adopting a professional communication SOC processor, dual core four thread, with a clock speed of up to 880MHz, and equipped with a large capacity Flash as standard. Based on a powerful hardware platform, feature rich software can be implemented to meet diverse monitoring applications.

2. Rich functionality

The JYun operating system is deeply customized and supports communication methods such as GPRS, RJ45, ZigBee, LoRa, WIFI, NB-IOT, etc. Flexible networking and secure data transmission.

3. Stable and reliable

The motherboard and components meet industrial standards and support a wide voltage input range of 9-36V. The ambient temperature range can reach -20~65 ℃. Equipped with network connectivity monitoring software, it can automatically reset the system in case of failure and support remote restart by sending remote commands

4. Support remote one click upgrade; Local storage, power outage continuation, and other functions;

5. Cloud management

Provide a free cloud management platform that enables remote centralized management of devices, enabling status monitoring, unified configuration, and other functions. Private cloud platforms can be deployed according to user needs.

6. Module Expansion

Support the extension of ZigBee/3G/4G modules for wireless internet access, without wiring installation, suitable for applications in remote environments.