RMD WITH UV SENSOR FOR SURFACE DISINFECTION MEASUREMENTS

The radiometer RMD is currently available in a special version to prove the effectiveness of UVC surface disinfection based on the Sars-CoV-2 virus disinfection, known as Coronavirus or Covid-19, and other microorganisms.

Coronaviruses require about 6 J/m² at low humidity to disinfect the surface (D90, source: “Ultraviolet Germicidal Irradiation Handbook”). The highest dose reported for viruses for a 6-log-step reduction is 235 mJ/cm² for 253,7 nm [1]. However, the doses for uv disinfection of corona viruses rely on the used lamp and wavelegth.
In addition to classical UV low pressure lamps more and more UV LEDs and 222 nm FAR UV excimer lamps are used. This far UVC wavelengths are said to not penetrate through the outer layer on the surface of human skin but still efficiently inactivate the viruses and microorganisms [2], [3].
We are happy to support all academic, industrial and medical customers with our measuring instruments. Therefore we offer the RMD with UV UVGI sensors at a special price. In addition, we offer an accredited ISO 17025 / DAKKS calibration.

RMD features a wide dynamic range and extremely low noise. For this purpose, the sensor already contains a multi-stage amplification, an extremely precise analog-to-digital converter and a temperature sensor. The memory contained in the sensor contains all sensor identifications and the calibration history.
Two UVGI sensors can be read out simultaneously. The measured data are clearly shown on the graphical display. For measurements of mercury low pressure lamps we recommend an UVC UVGI sensor. For measurements of the novel UVC LEDs we recommend an UVBB UVGI sensor to overcome the overlap of filter edge at 280 nm and emission at 275 nm. For measurements of far UVC KrCl* excimer lamps emitting at 222 nm we recommend a special UV sensitive sensor.

Compared to the RM-12, the RMD features a significantly higher resolution of 24 bit, an extended measuring range of up to 7 orders of magnitude and dose measurement.  The device can be powered by a rechargeable battery or mains adapter and measures for up to 100 days at a time. The RMD is upgradeable to the RMD Pro.