USB Datalogging Radiometers


The UV-DATALOGGER USB is a small, self-contained, high quality UV monitoring instrument for long-term data recording.

  • Wireless data acquisition
  • Long-term data acquisition (up to 3 months)
  • High sampling rate (up to 1/s)
  • UV-intensity mW/cm2
  • Up to 5 different UV-bands available
  • USB connection
  • Graphic chart on PC
  • Evaluation software
  • Optical light guide for high temperature (optional)
  • High-pressure housing for water disinfection available
  • Simple installation

It is designed to measure and record UV energy in mW/cm2 e.g. of low pressure HG lamps for the water purification. Various customer specific configurations are available and in conjunction with a high pressure, water proof sensor housing it is particularly suitable to monitor UV-energy of water disinfection installations. It is available with different UV-sensors in up to five different UV-bands (UV-A, UV-B, UV-C, UV-V –Diazo- or full UV).In the basic version the UV-Datalogger USB consists of the measuring head, which is fixed to the lamp housing, and the removable USB recording stick. The UV-Datalogger USB is also available with an optional flexible optical light guide and SMA socket to enable measuring in high temperature areas (up to 350 °C/ 660°F). The detachable USB stick can record up to 32.000 measuring results.

The sampling rate decreases reciprocally in relation to the recording period. At the highest sampling rate of 1 sec the maximum recording period is approx. 9 hrs, while at a sampling rate of 5 min the recording period reaches 3 months.The UV-Datasampler USB comes with a special evaluation software for downloading the data to a computer to show, edit and store a history of the monitoring results of the entire measuring period as graphic charts (mW/cm2).


  • Spectral ranges: UV 230 – 410 nm (Standard) or other 
  • Max. Power Input 0 to 3,000 mW/cm2
  • Display: via PC
  • Software: Easylog USB
  • Sampling rate: 1 sec to 5 min (reciprocal to recording period)
  • Recording period: 9 hrs to 3 months (reciprocal to sampling rate)
  • Power source: long life 3.6 V Lithium Battery
  • Battery service life: 1 year
  • Dimensions: Ø 1.5” (40 mm) x 3” (75 mm)
  • Weight: approx. 6 ounce (200 g)
  • Operating temperature: 32 to 113° F / 0 to 45° C
  • Optical light guide: 2 meter (80”) length, up to 350 °C/ 660°F (optional)
  • Memory:: 32.000 measuring results
  • Base Accuracy: ± 5 %


In order to keep its full function and precision it is recommended to have re-calibration done once per year. Re-calibration will also be necessary after change of battery. PTB traceable calibration with certificate.


  • Please avoid shaking the UV-Datalogger USB.
  • Do not expose to excessive heat.
  • UV-light is hazardous to your health. Avoid direct UV-light to your eyes and to your body.


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