Particulate dust detector

1.Particulate dust detector PM sensor

The Particulate dust detector is a device that uses the principle of laser scattering to directly measure the concentration of particulate matter and dust in the air.

1. Laser technology (light scattering principle, optical particle size cutting, no physical particle size cutter required)

2. PM2.5/PM10/TSP three channels output simultaneously

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

4. Particulate matter range PM: 0-10000ug/m3;

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

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

7. Communication interface customization 485, standard MODBUS, TTL, customization

8. Calibration does not require frequent calibration. It is recommended to calibrate once a year.

9. Optional purging system for cleaning

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. Particulate dust detector temperature and humidity monitoring unit

The temperature and humidity monitoring unit consists of two material conductors with different compositions forming a closed loop. When there is a temperature gradient at both ends, a current will pass through the loop. At this time, an electromotive force - thermal electromotive force - exists between the two ends. Two homogeneous conductors with different compositions are hot electrodes, the end with higher temperature is the working end, and the end with lower temperature is the free end. When the temperature of the measured medium at the working end changes, the thermoelectric potential changes accordingly. The thermoelectric potential is sent to the computer for processing, and the temperature value can be obtained. Humidity monitoring units are generally made of polymer film capacitors. When the ambient humidity changes, the dielectric constant of the humidity-sensitive capacitor changes, and its capacitance also changes, thus obtaining the humidity.

The product uses standard 35mm clamping rails, industrial-grade chips, and high-precision temperature and humidity probes to ensure the product's excellent reliability, high precision, and interchangeability. Using 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, KingView).

1. Temperature sensor range: -40～+80℃ Accuracy: ±0.5℃

2. Humidity sensor range: 0~100% Accuracy: ±3%

3. DC power supply: 12VDC

4. Maximum power consumption: 0.4W

5. Long-term temperature stability: ≦0.1℃/Y

6. Long-term stability of humidity: ≦1%/Y

7. Output signal: RS485 (MONDBUS protocol)

3. Particulate dust detector wind speed and direction monitoring unit

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

4. Particulate dust detector noise sensor

The noise sensor incorporates a sound-sensitive condenser electret microphone. Sound waves vibrate the electret film inside the microphone, causing changes in capacitance and producing a corresponding change in tiny voltage. This voltage is then converted into a voltage of 0-5V, which is accepted by the data collector through A/D conversion and transmitted to the monitoring chip.

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

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

2. Maximum power consumption: 0.4W

3. Output signal: RS485 output

4. Response time: ≤2S

5. Measuring range: 30dB-130dB

6. Resolution: 0.1dB

7. Measurement error: 3%Fs

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

9. Working temperature: -20-60℃

5. Particulate dust detector atmospheric pressure sensor

1. Absolute measurement range: 10-1200mbar

2. Maximum 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. Working range: 0-40℃/0-80RH%

7. Output signal: RS485 (Mondbus protocol)

6. Particulate dust detector IoT access server

1. High performance

It adopts a professional communication SOC processor, dual-core and four threads, with a main frequency of up to 880MHz and a large-capacity Flash as standard. Based on the powerful hardware platform, feature-rich software can be implemented to meet diverse monitoring applications.

2. Rich functions

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

3. Stable and reliable

The motherboard and components comply with industrial-grade standards, support 9 ~ 36V wide voltage input, and the ambient temperature range can reach -20 ~ 65℃. It has network connectivity monitoring software that can automatically reset the system when a fault occurs and supports remote restart by sending remote commands.

4. Supports remote one-click upgrade; local storage, power-off resume and other functions;

5.Cloud management

Provides a free cloud management platform, which can remotely and centrally manage equipment to achieve status monitoring, unified configuration and other functions. Private cloud platforms can be deployed according to user needs.

6. Module expansion

Supports expansion of ZigBee/3G/4G modules to achieve wireless Internet access, no wiring installation, suitable for applications in remote environments.