Experts in temerature thermal meterorological measurement   measurement and control solutions


Temperature calibration





advanced Road/Runway Surface condition (Water Film Height/ Freeze Point temperature) Detection & road Meteorology Sensors.


High performance intelligent invasive/non- invasive & mobile real time sensors for road/runway surface ice detection, freeze point temperature measurement, water film height & surface grip measurement.

Lufft's UMB (Universal Measurement Bus) technology with open protocol, offers lean modular strategy that will communicate with any 3rd party hardware such as Variable Message Signs (VMS), Traffic Control Centers and OEM system integrators and data loggers.

Measures freeze point temperatures, water film height up to 4mm, & now "friction" (Grip) in addition to other critical surface condition status such as wetness, ice, snow, hoar frost & residual salt. Active sensor measures freeze point temperature independent of de icing material, making it ideal for bridge deck applications where alternatives to sodium chloride are sometimes used to prevent corrosion.


Benefits of non invasive road weather sensors:

-Automatic calibration according to surface construction (concrete or asphalt).
-Automatic re calibration during dry periods (surface conditions)
-No need to adjust the unit according to the distance between installation point & surface.

-Can be re positioned easily.

All sensors are configured & firmware updated using the free software tool.

See further down this page for actual measurement comparison between embedded road sensor (puck) with non-invasive technology.

New remote data hosting & cloud storage platform " ViewMondo" available to put all your winter weather data in one place (fixed & mobile stations).

IRS31Pro-UMB Passive Intelligent Road/Runway Surface Condition Sensor.

Fourth Generation IRS Passive Sensor with improved accuracy


- Road surface temperature

- Water film height up to 4 mm

- Calculates Freezing temperature for different de-icing      materials   (NaCl, MgCl, CaCl).

- Reports Road Surface Condition (dry/damp/wet/ice or snow/residual salt/freezing point)

-Friction (Grip)

-Ice percentage.

Optional 1 or 2 deep temperature sensors.


Lufft IRS31Pro-UMB Passive road weather sensor

ARS31 Pro-UMB Road/Runway Active Ice Forecast Sensor.

Lufft ARS31Pro-UMB active road/runway sensor measures the freezing temperature of a liquid on the road/runway surface.

Product concentration (potassium acetate, potassium, Cryotech E36, Safeway KF Hot)

Freezing temperature measurement is independent of mixture ( electrical conductivity of the solution must be > 1 mS/cm).

In addition, ARS31Pro-UMB can determine the threat of icing using an external surface temperature sensor connected directly to the ARS31Pro.

Lufft ARS31Pro Freeze Point Temperature  Sensor

NIRS31-UMB Non Invasive road surface condition sensor

Spectroscopic measurement of:

-Surface Condition-Dry, Damp, Wet, Snow, Ice

-Water Film Height/Layer Thickness

-Ice % in water

-Surface Temperature

-Determination Of Freeze Point Temperature

-Grip (Friction).


Lufft NIRS31-UMB Non Invasive Road Surface Condition Sensor Pole Mounted.

StaRWIS Non-Invasive Road Weather Information Sensor.

Designed for Gantry or Pole mounting, measuring road surface conditions for applications such as bridges & elevated road sections where an in-pavement sensor is not possible.

RS485/CAN-BUS/UMB outputs.

Contact us for more details.

Lufft StaRWIS Non-Invasive Road Wather Sensor.

MARWIS Mobile Runway Weather Sensor.

Integrate into SnowTam.

Measures winter runway surface grip & water film level at 100Hz.

NEW: Now measures ambient humidity in addition to surface humidity at the runway surface.


Reduce winter maintenance costs by intelligent knowledge of the current runway surface condition in real time by applying the deicing chemical only where it is needed, rather than re- treating the full length of the runway.

The new MARWIS low cost intelligent mobile Runway surface weather sensor from lufft reports surface weather data in real time on Runways &Taxiways.

Display data inside vehicles on Tablet devices using the free Lufft MARWIS App &/or transmit data directly to a remote server.

More details can be found at:


Watch the MARWIS movie here:

MARWIS - the Mobile Runway Sensor from Lufft


MARWIS Mobile road weather sensor

Lufft Marwis fitted to runway Patrol Vehicle





Runway Patrol Vehicle showing Maoris mounted vertically on the rear, measuring runway surface conditions during the winter season.



R2S-UMB Radar Precipitation Sensor (Present Weather) for remote monitoring of road surface, rail track, storm drain systems, advanced flood warning systems & other hydrology applications.


The sensor is addressable & can therefore be networked.

No moving parts to service

Inbuilt heater for low temperature operation


Lufft R2S radar precipitation sensor

VS2K/20K-UMB  Road/Runway  Visibility sensor.

Using the "Forward Scatter" measurement technique, the VS2K-UMB sensor measures from 10-2,000M/20,000M designed for applications in road/airport Meteorological Optical Range.

The construction incorporates "active spider defense" to help keep the optics performing correctly.

Analogue & digital outputs available.

Road visibility sensor VS2K



New Lufft SHM31 Snow Depth Sensor

A compact laser based sensor for determining snow depth up to 15M with mm accuracy.

Output includes signal strength for advance warning.

Small measuring spot size reduces averaging

errors. Long MTBF.


Lufft SHM31 Laser Snow depth sensor

Lufft UMB ( Universal Measurement Bus) Technology

Main Advantage: Open Protocol, not a closed box solution.

Technology for recording environmental data.

The modular system approach supports easy commissioning, free firmware updates & data transfer over RS232, RS485 or GPRS modem.

UMB offers flexibility, modularity.

Analogue sensors can be connects to the UMB BUS simply by using the ANACON modules.

The DACON8  D/A converter module provides 8 channel analogue outputs.

Lufft ISOCON/ANACON UMB interface Module

Road Weather Camera

"Virtual eye on site" in conjunction with measurement data:

- Creates trust & visually illustrates measurement data
- Recommended combination especially in conjunction with ice warning systems
  to limit patrols to the greatest possible extent
- Images of road condition day & night in real time with infrared spotlight (option)  & GPRS transmission

road weasther camera

Infrared Spotlight

For use in combination with the Road Camera above to give 24 hour scene vision in real time.

Infrared Spotlight

SOFTWARE Collector/SmartView3


Web based visualization & data collection software for Lufft data loggers/transmitters.

MDSS Software

Lufft SmartView3






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