QX/T 582-2020 in English

Take wind speed sensor as an example:

• Test point selection: Cover the upper and lower limits of the measuring range and ≥5 points, 0°, 45°, 90° multi-directional testing
• Special requirements: Rotary starting wind speed to be measured (3 times average), included in the distance constant to be measured in the observation network
• Standard device configuration: Ultrasonic anemometer above 40Hz or WMO certified equipment

Key control elements:

1. Installation requirements: Air pressure sensor requires a dedicated studio, and wind speed sensor is installed at the same height
2. Selection of standard instruments: Use ventilation psychrometer for temperature, pit rain gauge for precipitation, and secondary standard meter for radiation
3. Data quality: Soil moisture requires 4 ring knife samples to verify uniformity (difference ≤ 2%)

Standard innovations

• For the first time, the zero-point sealing test requirements for non-rotating anemometers are clarified
• Mandatory clauses for electromagnetic compatibility tests (GB/T17626 series) are added
• The difference analysis mechanism between dynamic comparison and static testing is introduced

Application suggestions

1. For newly purchased equipment, the manufacturer should be required to provide a full test report of QX/T582-2020
2. Business-use visibility meters need to be regularly compared with transmission meters in the laboratory
3. Multi-factor integrated systems need to test the performance of each sensor module separately