Lufft MARWIS Mobile Weather Sensor, 2 m Installation Height

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Lufft MARWIS Mobile Weather Sensor, 2 m Installation Height

Product Number: 8900.U04

Measurement distance

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Overview

Overview Benefits Specifications Resources

Overview

The mobile advanced 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 2 m above the surface and calculates 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. A standard data output rate is 1 Hz via RS485. It serves as an important decision support with regard to preventive gritting. Due to the open interface protocols, MARWIS can be easily integrated 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.

Benefits

Mobile sensor

Flexible and representative measurements from many vehicles, no fixed installation required, and hot spots for high water film heights or icying can easily be identified.

Non-invasive measuring principle

The optical (spectroscopic) measuring principle delivers the important road surface condition parameter without the need of construction works on the road itself.

Easy and flexible installation

Simple car mounting options and flexible data communication via Bluetooth, RS485, and CAN-Bus.

Low maintenance

Long life LED technique, no moving parts and easy cleaning procedure.

Specifications

Technical Attributes

Temperature Accuracy	±0.5 °C from 40 km/h (25 mph) on
Dimensions (free text)	4.3 x 7.9 x 3.9 in (110 x 200 x 100 mm)
Measurement Range EU	Road surface temperature: -40 - +158 °F Ambient temperature: -58 - +158 °F (°C switchable) Relative air humidity: 0 - 100 % Relative humidity above road surface: 0 - 100 % Dew point temperature: -58 - +140 °F Waterfilm film height: 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.) Ice Percentage: 0 - 100 % Friction: 0 - 1
Measurement distance	7 ft (2 m)
Standard storage temperature	-40 - +158 °F
Detectable road conditions	Dry, damp, wet, snow-/ice-covered, chemically wet, slush
Resolution EU	Road surface temperature: 32.18 °F (0.1 °C) Ambient temperature: 32.18 °F (0.1 °C) Relative air humidity: 1% Relative humidity above road surface: 0.1% Dew point temperature: 32.18 °F (0.1 °C) Waterfilm film height: 1 µm Ice Percentage: 1% Friction: 0.01
Communication	Bluetooth, RS485-UMB, CAN-Bus
Material enclosures	Aluminium housing with plastic cover
Weight EU	3.7 lb (1.7 kg)
Product highlights	Mobile Plug and play 100 measurements per second with max. output rate of 10Hz Multifunctional Real time thermal mapping Wireless data transfer
Casing IP Rating	IP68
Light source	LED
Power Consumption	Approx. 3 VA without heating, 50 VA with heating
Cable Length	50 ft (15 m)
Operating voltage	10 - 28 VDC on the sensor
Cable Connection	Open wires
Temperature resolution	32.02 °F (0.01 °C)
Accuracy	Road surface temperature: ±1 .5 °F @ 32 °F Dew point temperature: 3 °F @ temperature of 32 - +95 °F Waterfilm film height: 10 %
Operating temp range 1	-40 - +140 °F
Temperature range	-40 - +70 °C
Interface	RS485 2 wire, half duplex, bluetooth, CAN
Operating humidity	95 % RH (non-condensing) 0 - 100 % RH
Temperature compensation EU	-40 - +70 °C
Height above Absolute Altitude	9843 ft (3000 m)
Measurement technology	Optical spectroscopic principle, LED transmitter, pyrometer

Resources