- road parameters control
- iciness
- humidity
- temperature
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REMARKS: Sensor LB-781 is curently
unavailable.
Integrated road sensor LB-781 is is designed for surface and road interior temperature measurement as well as road surface conductance (reverse of resistance). It is a stationary device, of small size powered from an outside power supply. It is characterized by a modern construction based on efficient and energy saving microprocessor controller.
For measurement the device uses data from two temperature sensors Pt-1000 and a comb-shaped conduction sensor. Basing on the knowledge of nonlinear sensor characteristics and digital calibration data stored during the calibration process in a device's memory - the microprocessor (built-in the device) counts the actual measurement results. Those results are sent (in a digital form) from the device to a supervisory system of data collection (i.e a panel LB-741, a LAB-EL meteorological station LB-770, a converter LB-486 or a PC computer).
The device is equipped with a digital interface S300 LAB-EL.| TEMPERATURE MEASUREMENT |
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|---|---|
| Scope of measurement |
-40...+70 °C |
| Accuracy | +/- 0,2 °C |
| RESISTANCE MEASUREMENT |
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|---|---|
| Scope of measurement |
0...65000 ohm |
| Accuracy | 10 % (measured value) +/- 20 ohm |
| WORK CONDITIONS |
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|---|---|
| Temperature | -40...+70 °C |
| Humidity | 0...100 % |
| POWER SUPPLY | ||
|---|---|---|
| Scope of voltage |
8..24 V DC | |
| Energy consumption | 4 mA | average |
| 25 mA | maximum |
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Produced by: LAB-EL Laboratory Electronics 68b, Bodycha Str., 02-495 Warsaw tel: (022) 667 71 18, 0601 209656, fax: (022) 867 53 32 e mail: info@label.com.pl home page: http://www.label.com.pl internet meteorological station: http://www.meteo.waw.pl meteorological station on a mobile phone: wap.meteo.waw.pl Last updated: 12.09.2007 |
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