UVA monitoring needs a focused sensor response, especially where visible and infrared light should not influence the reading. LPUVA01 measures irradiance in the UVA spectral range and is blind to visible and infrared light, giving users a dedicated probe for indoor radiometric monitoring tasks.
The probe works without an external power supply. Light striking the photodiode generates a current, which is converted into a potential difference and read by a suitable voltmeter. The measured value is then calculated using the calibration factor marked on the probe housing, so each probe is used with its own individual sensitivity value.
With a measuring range of 0…200 mW/cm², typical sensitivity of 2.6 μV/μW/cm⁻² and calibration accuracy below 6%, LPUVA01 gives technical users a compact, low-complexity way to measure UVA irradiance. The Ø 30 mm x 38 mm housing and 5 m cable support straightforward integration into indoor measurement setups.
The photodiode generates current when exposed to light, and the internal resistor converts this current into a potential difference for voltmeter reading.
The probe measures irradiance in the UVA region with a spectral response peak at ≈365 nm and FWHM 40 nm.
he output is read as a potential difference and converted into irradiance using the calibration factor marked on the probe.
Calibration is performed with monochromatic light at 365 nm, obtained by separating the emission line of a Xe-Hg lamp with an interferential filter.
The probe output must be read with a digital multimeter with internal resistance >100 kΩ.
The output signal can be converted to 4…20 mA or 0…10 Vdc using compatible HD978TR series converters.
