Lufft NIRS31-UMB Non-Invasive Road Condition Sensor, 15 m Distance
Product Number: 8710.UT01Overview
The NIRS31-UMB is a non-invasive road weather sensor with optical measuring principle. It is mounted at masts or bridges up to 50 ft distance to the measurement spot on the road and can even monitor bridges. It measures surface conditions such as surface temperature, wetness, ice, snow, or frost as well as water film heights and calculates additional parameters like ice percentage in water, freeze point temperature and generates the friction coefficient on the road.
Benefits
The optical (spectroscopic) measuring principle delivers the important road surface condition parameter without the need of construction works on the road itself.
Road condition is evaluated over a representive spot area of the road surface of
Sensor measures on multiple wavelengths in the infrared optical range and delivers important road information: surface temperature, water film height, ice layer thickness, ice percentage, freezing temperature, road condition index, friction and snow height.
Specifications
Technical Attributes
| Operating voltage | 12 - 24 VDC ±10 % |
| Cable Length | 50 ft (15 m) |
| Layer Thickness | Water, Snow, Ice |
| Cable Connection | Open wires |
| Operating temp range 1 | -40 - +176 °F |
| Lamp lifetime | 2 years |
| Operating humidity | 0 - 100 % RH |
| Accuracy | Road surface temperature: ±1.5 °F Water film height: ±0.04 in or ± 20 % of measurement value |
| Weight EU | 22 lb (10 kg) |
| Interface | RS485 2 wire Baud rates: 1200 - 57600 bit/s (Standard 19200) SDI-12: 1200 fixed |
| Measurement technology | Optical spectroscopic principle, lamp transmitter, pyrometer |
| Height above Absolute Altitude | 9843 ft (3000 m) |
| Standard storage temperature | -40 - +158 °F |
| Measurement Range EU | Layer thickness: 0-0.08 in (snow 0 - 0.4 in) Friction: 0-1 (critical - dry) Pyrometer: -40 - +158 °F (-40 - +70 °C) |
| Measurement distance | 50 ft (15 m) |
| Resolution EU | Layer thickness: 0.01 mm Pyrometer: 0.1 °C |
| Dimensions (free text) | 16.7 x 8.86 x 11.22 in (425 x 225 x 285 mm) |
| Product highlights | Non-invasive Easy to install Easy to add to existing measurement networks Friction measurement Real time data providing |
| Material enclosures | Aluminium housing with plastic cover |
| Detectable road conditions | Dry, Damp, Wet, Snow, Ice |
| Power supply | 12 - 24 VDC ±10 % |
| Communication | SDI-12, RS485-UMB |
| Casing IP Rating | IP65 |
| Power Consumption | 40 VA, 15 VA in energy saving mode |
Resources
Data Sheets (2)
Software/Firmware (2)
Application Notes (5)
Guides (1)
Case Studies (1)
Manuals (8)
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