Technical Data MARWIS - Mobile Advanced Road Weather Information Sensor MARWIS is the first road and runway weather sensor detecting road conditions, temperatures, friction and other parameters mobile and in real time from driving vehicles... Parameters measured Road condition (dry, moist, wet, ice, snow, slush, chemically wet), road surface temperature, ambient temperature, water film height up to 6mm, dew point temperature, relative humidity, ice percentage, friction (calculated) Measurement technology Optical LED transmitters, photo receivers, pyrometer, infrared Product highlights Mobile, plug and play, 100 measurements per second with max. output rate of 10Hz, multifunctional, real time thermal mapping, wireless data transfer Interfaces Bluetooth, RS485, CAN-Bus Article number 8900.U03, 8900.U04 The mobile road weather sensor MARWIS turns vehicles into driving weather stations by detecting several critical road and runway weather parameters. It can be installed on vehicles with a distance of 1 - 2m above the surface and delivers information about temperatures, waterfilm heights, dew points, road conditions (dry, moist, wet, snow, ice), ice percentages, rel. humidity and friction with a frequency of up to 100 times per second and a max. output rate of 10 Hz. It serves as an important decision support with regard to preventive gritting. Due to the open interface protocols, MARWIS can be easily integrated Page 1 Technical modifications and errors excepted - Created 03/03/2021 G. Lufft Mess- und Regeltechnik GmbH Fellbach, Deutschland

Technical Data MARWIS - Mobile Advanced Road Weather Information Sensor into existing winter maintenance monitoring networks. Similarly, the mobile road sensor can communicate directly with the control system on gritting vehicles. The measurement data output supports the protocol UMB binary. General Dimensions Weight Admissible storage temperature Operating rel. humidity Operating voltage Power consumption Operating temperature Operating rel. humidity Protection type Surface conditions Admissible height above absolute altitude Interface Height approx. 110 mm, width approx. 200 mm, depth approx....

Technical Data MARWIS - Mobile Advanced Road Weather Information Sensor Dew point temperature Measuring range Unit Resolution Principle Accuracy Waterfilm film height Principle Measuring range -50 ... 60 °C °C 0.1 °C passive, calculated out of air temperature and humidity 1.5 °C @ temperature of 0...35 °C Unit Resolution Accuracy Optical 0 ... 6000 µm Max. WFH is only achieved with concrete underground. For asphalt, the maximum measurable water film height is smaller and depends on the distance to the ground. µm 1 µm 10% Ice Percentage Measuring range Unit Resolution Friction Measuring range...