GB/T 33866-2017 in English

1. Background and significance of standard formulation

GB/T 33866-2017 "Solar Ultraviolet Radiation Measurement Broadband Ultraviolet Radiometer Method" is an important standard in my country's meteorological field. It mainly regulates the technical requirements and methods for measuring solar ultraviolet radiation using broadband ultraviolet radiometers. The standard was proposed by the China Meteorological Administration and is managed by the National Technical Committee for Standardization of Meteorological Instruments and Observation Methods.

2. Interpretation of the main contents of the standard

2.1 Basic definition of ultraviolet radiation

Ultraviolet radiation (UV) refers to electromagnetic radiation with a wavelength between 1 nm ~ 400 nm. According to the wavelength range, it can be divided into:

• UV-A (315 nm ~ 400 nm)
• UV-B (280 nm ~ 315 nm)
• UV-C (100 nm ~ 280 nm)

2.2 Technical requirements for broadband ultraviolet radiation meters

Broadband ultraviolet radiation meters are professional instruments used to measure solar ultraviolet radiation. Their spectral range and type must meet the following requirements:

2.3 Data collection and processing methods

The data were collected using the local mean solar time, and the day boundary was the local mean solar time of 24 hours. The collection methods are divided into:

• Direct irradiance collection
• Voltage signal conversion (formula: $E = \frac{V}{K}$)

3. Comparative analysis of standard frameworks

The following is a comparison table of main technical requirements:

4. Implementation suggestions

To ensure the effective implementation of the standard, it is recommended that:

• Strictly select the measurement site according to the site requirements and avoid air pollution sources.
• Select broadband UV radiation meters and data collectors that meet the technical indicators.
• Regularly calibrate the instrument and perform routine maintenance to ensure the normal operation of the equipment.