Lufft MARWIS Mobile Weather Sensor, 1 m Installation Height

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Lufft MARWIS Mobile Weather Sensor, 1 m Installation Height

Product Number: 8900.U03

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 1 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

Operating voltage	10 - 28 VDC on the sensor
Cable Length	50 ft (15 m)
Interface	RS485 2 wire, half duplex, bluetooth, CAN
Temperature range	-40 - +70 °C
Cable Connection	Open wires
Operating temp range 1	-40 - +140 °F
Height above Absolute Altitude	9843 ft (3000 m)
Temperature Accuracy	±0.5 °C from 40 km/h (25 mph) on
Standard storage temperature	-40 - +158 °F
Operating humidity	95 % RH (non-condensing) 0 - 100 % RH
Accuracy	Road surface temperature: ±1 .5 °F @ 32 °F Dew point temperature: 3 °F @ temperature of 32 - +95 °F Waterfilm film height: 10 %
Dimensions (free text)	4.3 x 7.9 x 3.9 in (110 x 200 x 100 mm)
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
Measurement technology	Optical spectroscopic principle, LED transmitter, pyrometer
Detectable road conditions	Dry, damp, wet, snow-/ice-covered, chemically wet, slush
Communication	Bluetooth, RS485-UMB, CAN-Bus
Product highlights	Mobile, plug and play 100 measurements per second with max. output rate of 10Hz Multifunctional Real time thermal mapping Wireless data transfer
Measurement Range EU	Road surface temperature: -40 - +158 °F Ambient temperature: -58 - +158 °F 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	3.3 ft (1 m)
Casing IP Rating	IP68
Material enclosures	Aluminium housing with plastic cover
Light source	LED
Weight EU	3.7 lb (1.7 kg)
Power Consumption	Approx. 3 VA without heating, 50 VA with heating
Layer Thickness	Water, Snow, Ice
Temperature resolution	32.02 °F (0.01 °C)

Resources