Senseca

LPUVB01 UVB Radiometric Probe

Radiometric probe for indoor UVB irradiance measurement.

Measures irradiance from 0…200 mW/cm² in the UVB range (280…315 nm)
Blind to visible and infrared light
Passive mV output, no external power supply, individually calibrated

Quantity

Overview

The Senseca LPUVB01 is a radiometric probe that measures irradiance, defined as the radiant flux (W) passing through a surface divided by the surface area (m²), in the UVB spectral range (280 nm…315 nm). Thanks to the use of a new type of photodiode, the probe is blind to visible and infrared light. It is suitable for indoor applications that need constant radiometric monitoring.

The probe needs no external power supply. The photodiode current is converted into a potential difference through a resistor and read in mV with a voltmeter, and the irradiance value is calculated with the calibration factor marked on the probe housing. Each probe is individually calibrated, using the 313 nm line of a Xe-Hg lamp filtered through a special interferential filter, by comparison with the primary standards of the Senseca Metrological Laboratory. The output signal can also be converted to 4…20 mA or 0…10 Vdc using compatible HD978TR series converters.

Typical

Indoor UVB irradiance monitoring
Indoor applications that require constant radiometric monitoring

Key Features

UVB irradiance measurement in the 280 nm…315 nm range
Measuring range 0…200 mW/cm²
Blind to visible and infrared light
Typical sensitivity 0.19 µV/(µW/cm²)
Calibration accuracy <8%
Passive mV output, no external power supply needed
Individually calibrated, with the calibration factor marked on the housing
Output convertible to 4…20 mA or 0…10 Vdc with HD978TR series converters

Benefits

Dedicated UVB reading, because the probe is blind to visible and infrared light
Simple setup: passive mV output with no external power supply
Each probe has its own calibration factor marked on the housing, for direct calculation of the measured value
Compact Ø 30 mm x 38 mm housing with 5 m cable makes it easy to integrate into indoor measurement setups

Specifications

MEASUREMENT
Measured quantity	UVB irradiance (280 nm…315 nm)
Typical sensitivity	0.19 µV/(µW/cm²)
Measuring range	0…200 mW/cm²
Spectral range	Peak at ≈305 nm and FWHM 31 nm

ACCURACY
Calibration accuracy	<8%
Calibration method	313 nm line of a Xe-Hg lamp, filtered through a special interferential filter, by comparison with primary standards of the Senseca Metrological Laboratory

OUTPUT
Output signal	Passive mV signal from the photodiode with shunt resistor
Output impedance	2 kΩ
Signal conversion	Can be converted to 4…20 mA or 0…10 Vdc using HD978TR series converters
Reading instrument	Digital multimeter with input resistance >100 kΩ