QX/T 520-2019 in English

This standard systematically specifies the technical requirements and quality control system of automatic weather stations, mainly including:

• Modular architecture: clearly defines the five-layer architecture composed of sensors, collectors, peripheral equipment, etc.
• Adaptability to harsh environments: defines 9 types of environmental indicators such as temperature (-50℃~60℃), humidity (4%~100%), and electromagnetic compatibility
• Data quality standards: specifies sampling frequency (wind speed 240 times/min), algorithm verification and quality control process

Typical application scenarios

In the construction of meteorological stations on the Qinghai-Tibet Plateau, special attention should be paid to the following:

1. Select a configuration of severe level 3 (-50℃ low temperature/450hPa low pressure)
2. Configure a weighing precipitation sensor to deal with solid precipitation
3. Strengthen lightning protection design (meet GB/T17626.5 surge immunity)

Maintenance optimization suggestions

• Clock calibration: The error must be <15 seconds every 30 days. It is recommended to configure Beidou/GPS dual-mode timing
• Power management: The battery must support -30℃ low temperature startup and have a capacity ≥7 days of battery life

Main improvements compared to the old version of the standard:

• New remote control requirements for intelligent sensors (Clause 5.7.2)
• Strengthen electromagnetic compatibility indicators (conducted disturbance limit increased by 3dB)
• Improve data quality control system (add 5.4.2 algorithm verification)

This standard is coordinated with the WMO No.8 Guidelines and is in line with international standards in terms of sampling frequency, exposure calculation, etc.