INTEGRATED ROAD SENSOR LB-781

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road parameters control iciness humidity temperature

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DESCRIPTION

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.

TECHNICAL DATA

TEMPERATURE MEASUREMENT
Scope of measurement	-40...+70 °C
Accuracy	+/- 0,2 °C

RESISTANCE MEASUREMENT
Scope of measurement	0...65000 ohm
Accuracy	10 % (measured value) +/- 20 ohm

WORK CONDITIONS
Temperature	-40...+70 °C
Humidity	0...100 %

POWER SUPPLY
Scope of voltage	8..24 V DC
Energy consumption	4 mA	average
	25 mA	maximum

OVERALL DIMENSIONS

• Width x length: 70 x 110 mm
• Height: 85 mm