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road electronics

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weather sensors

The DM32 and DM41 road weather stations cooperate with meteorological sensors of the VAISALA company. TELWAY is an authorized distributor of VAISALA’s road meteorology products in Poland. Technical parameters of the offered sensors satisfy world standards in the field of road meteorology.

 
 REMOTE ROAD SURFACE SENSOR DSC111
Surface state detection (dry, damp, wet, frost, snow, ice, slush), independent measurement of the thickness of the layer of water, snow, and ice, simulation of the friction coefficient value as an index of surface slipperiness. Noninvasive sensor, it operates by analyzing a rebounded laser radiation beam, does not require installing in the road surface. The sensor is fitted with a serial port interface. It can operate independently or as a sensing part of the DM32 (DM41) meteorological station.
 
DSC111.pdf       (148 kB) 
 REMOTE ROAD SURFACE TEMPERATURE SENSOR DST111

It measures air temperature, road surface temperature and relative humidity. The temperature measurement through the platinum resistance sensing element PT-100; the humidity measurement through the HUMICAP element. The road temperature measurement is based on the infrared mapping method. The sensor is fitted with a serial port interface. It can be a stand-alone solution or work as a sensing part of the DM32 (DM41) meteorological station. Integrating the DST111 with the DSC111 is also possible.
 
DST111.pdf       (136 kB) 
 HMP155 AIR TEMPERATURE AND HUMIDITY SENSOR
The probe measures air temperature and relative humidity. Temperature measurements are carried out through the platinum resistance sensing element Pt-100, whereas humidity is measured by the HUMICAP® sensor.
HMP155.pdf       (389 kB) 
PTB110 AIR PRESSURE SENSOR
The PTB 110 analogue barometer is intended for air pressure measurement. It features the BAROCAP® silicon capacitive absolute pressure sensor developed by Vaisala.
   
 
PTB110.pdf
(212 kB)
 DRS511 ROAD SENSOR
The DRS511 takes the following measurements: surface temperature, ground temperature (-6 cm), optical detection of the surface coverage (water film thickness or ice/snow cover on the pavement surface), electrochemical polarizability of the pavement surface (determining the amount of de-icing chemical on it), electrical surface conductivity (detection of surface states: dry, moist, wet, moist and chemical, wet and chemical, frosty, snowy, icy) and surface capacitance (mono-crystalline ice or black ice detection).
   
DRS511.pdf (1,16 MB)
 DTS12G SOIL TEMPERATURE SENSOR
The probe DTS12G measures temperature at different levels beneath the surface. Measurement is performed by means of the platinum resistance sensing element Pt-100.
   
 DTS12G.pdf
(639 kB)
WMS302 INTEGRATED WIND SPEED AND DIRECTION SENSOR
Wind speed and wind direction measurement is performed in an integrated measuring set. The integration of measuring functions provides a trade-off between the price of the sensor and the quality of measurements.
   
 
WMS301.pdf
(82 kB)
WA15 SET OF WIND SPEED AND DIRECTION SENSORS
The WA15 consists of a Vaisala anemometer WAA151 for wind speed measurement and a Vaisala wind vane WAV151 for wind direction measurement. An integrating element is the analog transmitter WAT12 of wind speed and direction. The sensors are fitted with heating elements that keep bearings from freezing.
   
 
WA15.pdf
(84 kB)
 WMT700 ULTRASONIC WIND SPEED AND DIRECTION SENSOR
It measures wind speed and direction using ultrasound. The WAS425 has no moving parts and is resistant to contamination and corrosion, which ensures improved accuracy and the reliability of data in all wind conditions and climates. The sensor is equipped with a serial port interface. It can operate independently or as a sensing part of the meteorological station DM32 (DM41).
   
 
 
WMT700.pdf
(174 kB)
DRS11A RAIN DETECTOR
The DRD11A Rain Detector offers fast and accurate precipitation detection. The sensor also features an analog rain signal for estimating rain intensity.
   
 
DRD11.pdf 
(448 kB)


PWD10 VISIBILITY SENSOR


Visibility measurement. Its integrated alarm functions allow the constant monitoring of fog and the automatic control of variable message signs. The sensor is equipped with a serial port interface. It can operate alone or as a measuring element of the weather station DM32 (DM41).

 
 
PWD.pdf
(254 kB)

PWD12 PRESENT WEATHER DETECTOR
This present weather detector gives road authorities the mix they require of visibility measurement range (MOR), characterization of reduced visibility, precipitation type identification, precipitation accumulation/intensity measurement. Its integrated alarm functions allow the constant monitoring of fog and the automatic control of variable message signs. The sensor is equipped with a serial port interface. It can operate alone or as a measuring element of the weather station DM32 (DM41).
   
 
PWD.pdf
(254 kB)


WXT520 WEATHER TRANSMITTER


Precipitation detection, measurement of intensivity and precipitation amount, measurement of air temperature and humidity, measurement of ir pressure, measurement of wind speed and direction. The sensor is equipped with a serial port interface.

 
WXT520.pdf (294 kB)
 

See also: www.vaisala.com