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Meteorological Visibility & Present Weather
Visibility & Present Weather Sensors
Ecotech is the exclusive distributor for the Biral range of visibility and present weather sensors which are used in airport, roads, wind farms and other applications where the measurement of ambient visibility is important.
Biral HSS VF-500 Visibility Sensor
Used for lighthouses and offshore platformsThe HSS VF-500 Visibility Sensor is a top of the range sensor for measuring visibility and fog density. It can be used in extreme conditions as it is able to withstand the rigours of many years in marine environments. With the optional fog warning relay the HSS VF-500 Visibility Sensor is used to automatically switch external devices such as warning lights, alarms and fog horns on lighthouses and offshore platforms when the visibility reaches a user defined limit. Features:
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Measurement Principle
The HSS VF-500 Visibility Sensor uses forward scatter meter technology to measure visibility in all weather conditions. The sensor measures the amount of light scattered by small suspended particulates (i.e. fog, haze and smoke aerosols) or larger particles (i.e. rain, snow, ice pellets, drizzle and mist) passing through the sample volume. The sensor calculates the atmosphere Extinction Coefficient (EXCO) from which the Meteorological Optical Range (MOR) is calculated. Using an infra-red light source and intelligent sensing technology the measurements are unaffected by other light-sources.
Biral HSS VPF-710 Visibility Sensor
Suitable for runway and marine applicationsThe HSS VPF-710 Visibility Sensor is suitable for use in any system where a digital output to a computer or logger is required. This sensor has sophisticated levels of self test for remote monitoring and is used particularly on airports, helipads, wind turbines and offshore weather stations. As with all HSS sensors it has excellent time proven performance and is suitable for use in extreme conditions. Features
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Measurement Principle
The HSS VPF-710 Visibility Sensor uses forward scatter meter technology to measure visibility in all weather conditions. The sensor measures the amount of light scattered by small suspended particulates (i.e. fog, haze and smoke aerosols) or larger particles (i.e. rain, snow, ice pellets, drizzle and mist) passing through the sample volume. The sensor calculates the atmosphere EXtinction COefficient (EXCO) from which the Meteorological Optical Range (MOR) is calculated. Using an infra-red light source and intelligent sensing technology the measurements are unaffected by other light-sources.
Biral HSS VPF-730 Visibility and Present Weather Sensor
Suitable for runway and scientific researchThe HSS VPF-730 Visibility and Present Weather Sensor is the best combined visibility and present weather sensor on the market today. It is one of a kind, being the only sensor using forward scatter meter technology to measure both visibility and precipitation data without an external sensor input. Using proven technology HSS VPF-730 Visibility and Present Weather Sensor is designed for a wide variety of applications such as Runway Visual Range, RADAR or other instrument adjustment or calibration, micro-meteorological research, motorway visibility and now casting ice or other dangerous conditions.
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Features
- measures visibility AND fog density
- proven accuracy, reliability and repeatability
- self-test and monitoring system
- very low power requirements
- long and trouble-free operational life
- minimal maintenance requirements and running costs
- highly resistant to sea-water corrosion
- built to last
- optional ambient light sensor for RVR applications
- optional sensor inputs to provide completely synchronised weather parameters
- measures over 20 types of present weather
- measures drop size distributions and precipitation accumulations
- measures visibility / state of the ground to WMO table 4680
Measurement Principle
The HSS VPF-730 Visibility and Present Weather Sensor uses forward scatter meter technology to measure visibility in all weather conditions. The sensor measures the amount of light scattered by small suspended particulates (i.e. fog, haze and smoke aerosols) or larger particles (i.e. rain, snow, ice pellets, drizzle and mist) passing through the sample volume. The sensor calculates the atmosphere EXtinction COefficient (EXCO) from which the Meteorological Optical Range (MOR) is calculated. Using an infra-red light source and intelligent sensing technology the measurements are unaffected by other light-sources.
Biral SWS-100 Visibility and Present Weather Sensor
Cost effective solution for use on roads.The SWS-100 Visibility and Present Weather Sensor with a measuring range up to 2 km (1.2 miles) is designed to detect snow, rain, drizzle, fog and haze on roads and in tunnels. With both digital and analogue outputs as well as relays for switching external equipment the sensor can be integrated into Intelligent Transport Systems and used for automatically switching warning signs in changing visibility conditions. |
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The SWS-100 Visibility and Present Weather Sensor is based on the proven HSS technology of our higher specification HSS range of visibility and present weather sensors which have been in demand world-wide for over 20 years
Features
- robust construction
- 3 switching relays
- low power
- measurement range < 10 m - 2 km
- instantaneous and averaged Meteorological Optical Range (MOR)
- digital and analogue outputs
- 3 relays to operate alarms and other external equipment
- 24 VDC (ie battery) or optional mains (AC) powered
Constructed of high-grade, powder-coated aluminium the SWS-100 Visibility and Present Weather Sensor is suitable for use in most environmental conditions.
NOTE for prolonged use in environments where sea-water corrosion or other corrosive pollutants are a factor we recommend our fully corrosion-resistant HSS range of visibility and present weather sensors.
Biral SWS-200 Present Weather Sensor
Cost effective sensor for wind farms and meteorological useThe SWS-200 Present Weather Sensor is a cost effective solution for measuring visibility and present weather designed for use on highways and for general meteorological and wind energy applications. The SWS-200 Present Weather Sensor has a measuring range up to 20 km (12 miles) and with an extra backscatter head provides enhanced present weather information. |
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Constructed of high-grade, powder-coated aluminium the SWS-200 Present Weather Sensor is suitable for use in most environmental conditions and has both digital and analogue outputs as well as relays for switching external equipment.
NOTE for prolonged use in environments where sea-water corrosion or other corrosive pollutants are a factor we recommend our fully corrosion-resistant HSS range of visibility and present weather sensors.
The SWS-200 Present Weather Sensor is based on the proven HSS technology of our higher specification HSS range of visibility and present weather sensors which have been in demand world-wide for over 20 years.
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Biral designs and manufactures a range of visibility and present weather sensors to suit all needs from basic monitoring to fundamental research. The Biral HSS Visibility and Present Weather sensors provide outstanding levels of accuracy and performance. The unmatched reliability and durability is reflected in their extensive use in critical applications such as marine navigational aids, roadside fog warning and airport RVR systems. The first sensors to use forward scatter in combination with an infra-red LED light source, the HSS range remains at the forefront of visibility and present weather measurement and are the sensor of choice in extreme environments. In 2009, Biral launched the SWS range of present weather sensors which are based on the same successful HSS technology but which have been designed for use in RWIS applications, by wind energy producers and for general meteorological data collection.
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