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Biral ALS-2 Ambient Light Sensor

ClimateMeteorological Station & Sensors
The ALS-2 Ambient Light Sensor is designed to measure background luminance as part of a Runway Visual Range (RVR) system. Mounted alongside the runway the ambient light sensor is often deployed with a visibility meter to provide the data necessary for calculation of RVR.
Quantity
1

Overview

  • Designed to FAA and ICAO requirements
  • 2 to 40,000 Cdm-2 measurement range
  • Choice of serial digital or analogue outputs
  • Simple and quick in field calibration
  • Direct connection to Biral visibility and present weather sensors
  • Extensive self-test capabilities
  • -60°C to 70°C operating range

Specification

Measurement Background luminance 2-40,000 Cdm-2 (0.5-11,700 fL)
Serial Output RS232, RS422
Analogue Output Optional - 2 x Analogue outputs
Spectral Response

Wavelength sensitivity range 420-675 nm, peak 565 nm.

Analogous to CIE luminous spectral efficiency
Measurement Error <10%
Field of View 6°

Downloads

doc_2042_181004023732 Downloaddoc_2042_181004023732

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