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Time:2026-04-02 11:40:19 Popularity:8
NiuBoL’s NBL-W-21GUWS ultrasonic wind speed and direction sensor is a fully digital, high-integration meteorological monitoring device. The instrument uses the ultrasonic time difference measurement principle to accurately calculate wind speed and direction by comparing the ultrasonic transmission time differences in the north-south and east-west directions. This method is not affected by environmental factors such as temperature, humidity, and atmospheric pressure, ensuring the stability and accuracy of measurement data.
Compared with traditional mechanical wind speed and direction instruments, the NiuBoL ultrasonic wind speed and direction instrument has no external rotating parts, is easy to install and maintain, and has strong anti-interference capability. It can operate reliably in a temperature range of -20°C to 80°C and humidity of 0-100% RH. The instrument supports an optional heating function to meet the needs of low-temperature and high-humidity coal mine environments. It can also be extended to integrate multiple environmental elements such as temperature and humidity, pressure, PM2.5, PM10, noise, radiation, and rainfall to achieve one-stop comprehensive monitoring.

The core principle of the ultrasonic wind speed and direction instrument is based on the time difference method: when wind blows from north to south, the transmission time of ultrasonic waves from the north sensor to the south sensor will be shorter than the reverse transmission time. By accurately calculating the ultrasonic transmission time differences in four directions (N, S, E, W), the wind speed and direction values can be obtained. This calculation process is independent of environmental variables such as temperature, ensuring the objectivity of measurement results.
In hardware design, NiuBoL products use high-strength shells and IP65 protection level, with excellent dustproof and waterproof performance. The built-in signal processing unit can directly output standardized digital signals, reducing secondary conversion errors. Compared with traditional equipment, the ultrasonic solution significantly reduces maintenance frequency and spare parts consumption, providing strong guarantees for long-term stable operation of coal mine projects.

| Parameter | Range | Remarks |
|---|---|---|
| Wind Speed | 0~60 m/s | Ultrasonic time difference method |
| Wind Direction | 0~359° | 360° full range |
| Power Supply Voltage | DC 12-24V | Low power consumption design |
| Signal Output | RS485 | Supports standard Modbus protocol |
| Baud Rate | 9600 bps | Configurable |
| Heating Power | 3W (optional) | Suitable for low-temperature freezing environments |
| Operating Temperature | -20~80℃ | Industrial-grade wide temperature range |
| Operating Humidity | 0-100%RH | Full humidity range |
| Protection Level | IP65 | Dustproof and waterproof |

In underground coal mines, the NiuBoL ultrasonic wind speed and direction instrument can be installed at key nodes of various ventilation ducts to monitor wind speed data in real time. The system transmits data to the surface monitoring center via RS485 bus and supports linkage with gas sensors such as methane concentration and carbon monoxide. When wind speed is below the set threshold, the platform can automatically trigger an alarm to remind operation and maintenance personnel to adjust ventilation equipment power, ensuring timely discharge of harmful gases in the mining area.
Heading faces are high-risk areas in coal mines and require strict control of ventilation parameters. The NiuBoL instrument can be deployed in the return airway of the heading face to continuously record changes in wind speed and direction, providing data basis for diluting harmful gases after blasting. At the same time, wind direction information helps judge the distribution of ventilation flow fields and optimize the layout of ventilation equipment to improve overall ventilation efficiency.
For large coal mines, wind speed monitoring in the main return airway and wing return airway is an important part of safe production. The NiuBoL system supports multi-point networking deployment and realizes centralized data collection and remote monitoring through the Modbus protocol, facilitating safety supervision departments to grasp the ventilation status of the entire mine in real time and meeting relevant national safety regulations.
At coal mine mouths and open-pit operation areas, the instrument can be extended to integrate PM2.5, PM10, and meteorological parameters to build a comprehensive environmental monitoring station. After data is connected to the smart mine platform, it can provide support for dust prevention and control and meteorological disaster early warning, assisting in the construction of green mines.
Coal mines are high-risk production environments with extremely strict requirements for the stable operation of ventilation systems. According to national coal mine safety supervision regulations, wind speed sensor equipment must be installed in each mining area, wing return airway, main return airway, and heading face to ensure that harmful gas concentrations are controlled within safe thresholds. As an upgraded alternative to mechanical wind speed instruments, the NiuBoL ultrasonic wind speed and direction instrument can work all-weather and long-term stably, effectively solving the pain points of traditional mechanical instruments that are prone to wear and require frequent maintenance.
The instrument is lightweight, has a sturdy structure, has no moving parts, and requires no on-site calibration. It is particularly suitable for long-term deployment in harsh underground and surface environments of coal mines. By monitoring the wind speed of ventilation ducts in real time, operation and maintenance personnel can promptly detect abnormal ventilation rates, prevent local accumulation of harmful gases, and provide reliable data support for safe coal mine production.

The NiuBoL ultrasonic wind speed and direction instrument emphasizes open integration design. The RS485 interface and standard Modbus protocol enable it to quickly connect to existing coal mine safety monitoring systems, PLC control cabinets, and SCADA platforms. Purchasers can choose bus topology or star networking according to on-site wiring conditions to achieve unified management of data from hundreds of monitoring points.
The system supports seamless docking with third-party sensors, such as gas sensors and temperature sensors, to build a multi-parameter environmental safety monitoring network. NiuBoL provides SDK development kits and technical interface documents to facilitate secondary development and platform customization by users. At the same time, the instrument reserves expansion interfaces and can add modules such as temperature and humidity and pressure according to project needs to form an integrated solution.
To ensure measurement accuracy, the following points should be noted during installation: avoid arranging on the same plane as radar or radio transmitting devices, keeping a distance of at least 2 meters; stay away from vibration sources and buildings, trees, or utility poles that may generate turbulence; use shielded cables recommended by the manufacturer and ensure good grounding; the installation location should ensure continuous and stable power supply.
NiuBoL provides professional installation guidance and on-site debugging services. The instrument design requires no daily calibration. Daily operation and maintenance only require regular checks of cable connections and shell cleaning, significantly reducing labor maintenance costs for coal mine projects.

Q1: What are the core advantages of ultrasonic wind speed and direction instruments compared with traditional mechanical wind speed instruments?
Ultrasonic wind speed and direction instruments have no mechanical wear parts, extremely low maintenance, and strong all-weather working capability, especially suitable for long-term stable operation needs in underground coal mines.
Q2: Does the NiuBoL ultrasonic wind speed and direction instrument support docking with existing coal mine safety monitoring systems?
Yes. Through the RS485 interface and standard Modbus protocol, it can seamlessly connect to mainstream coal mine safety monitoring platforms such as the KJ series.
Q3: How does the instrument perform in high-humidity or low-temperature coal mine environments?
Operating temperature range -20~80℃, humidity 0-100%RH. Optional 3W heating function ensures normal operation under freezing or high-humidity conditions.
Q4: How does the system achieve centralized management of multi-point wind speed data?
Using RS485 bus networking, it supports parallel connection of multiple instruments to the monitoring platform to achieve unified data collection, storage, and alarm linkage.
Q5: Can the NBL-W-21GUWS be extended to monitor other environmental parameters?
Yes. It supports optional integration of temperature and humidity, pressure, PM2.5, PM10, noise, and other elements to form a comprehensive environmental monitoring solution.
Q6: Does the instrument require frequent on-site calibration after installation?
No on-site calibration is required. Factory accuracy has undergone strict inspection, and long-term stability is high. Only regular checks of the installation environment are needed.
Q7: What after-sales technical support services does NiuBoL provide?
Installation and debugging guidance, protocol docking support, and long-term technical consultation are provided to ensure smooth project implementation and stable operation.

The NiuBoL ultrasonic wind speed and direction instrument provides a reliable integrated solution for coal mine ventilation safety monitoring with its technical characteristics of no mechanical parts, high precision, and strong compatibility. The instrument not only meets the requirements of national coal mine safety regulations for wind speed monitoring but also assists in the construction of smart mines and the upgrading of safety production management through open protocol design. According to the actual needs of coal mines of different scales, NiuBoL can provide customized monitoring scheme design, equipment selection, and system integration services. If you need detailed technical solutions or on-site survey support, please contact the professional team to jointly promote the optimization and implementation of coal mine safety monitoring projects.
NBL-W-21GUWS-Ultrasonic-Wind-speed-and-direction-Sensor.pdf
NBL-W-61MUWS-Ultrasonic-Weather-Station-Instruction-Manual.pdf
NBL-W-71MUWS-Micrometeorological-Sensor-Operating-Instructions.pdf
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