This professional UV radiometer is designed for measurement of light sources and irradiation systems, transmission measurements, and UV radiation safety assessment. It applies to various ultraviolet irradiation measurement fields including photochemical processes, polymer materials aging testing, flaw detection, UV light source evaluation, plant cultivation, and large-scale integrated circuit manufacturing.

• UV-365 Probe: Wavelength range: 320-400nm; Peak wavelength: 365nm
• UV-420 Probe: Wavelength range: 375-475nm; Peak wavelength: 420nm

The instrument consists of two main components: the UV365 or UV420 probe and the reading unit. These components connect via cable using plug and socket connectors for flexible measurement positioning.

1. Press the "power" button to activate the instrument
2. Select the appropriate probe type by pressing "UV365" or "UV420" button (do not press both simultaneously)
3. Choose the measurement range using ×1, ×10, ×100, or ×1000 buttons
4. Connect the probe to the reading unit socket
5. Remove the probe cover and position the photosurface at the measurement location
6. Read the displayed value and multiply by the range factor to obtain irradiance (μW/cm²)
7. Use "hold" button to freeze readings (press after selecting range)

Store the instrument in a clean environment at 0-40°C temperature and <85% humidity to prevent damage. Includes one-year warranty covering repairs or replacements for issues not caused by improper use or maintenance.