Present Weather

SWS-200LW Visibility & Present Weather Sensor

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The SWS-200LW is optimised for use in applications where accurate and reliable visibility and present weather measurements are required from a low power light weight sensor.

When only solar power is available or when reliance on batteries is essential the SWS-200LW is the perfect choice for a fully featured visibility and present weather sensor. With a power consumption of just 2.9W the sensor places a minimum burden on the supply system and can be intermittently powered for even lower power consumption.

The sensor measures: visibility (MOR), fog, haze, drizzle, rain, snow and general precipitation according to WMO 4680 table codes. The enhanced present weather information from the SWS-200 is due to the backscatter receiver, which allows accurate precipitation type and intensity information to be calculated.

The physical design has been optimised to reduce both the size and weight of the sensor whilst retaining the performance and robustness expected of a Biral visibility sensor. For use in aviation applications the sensor can optionally be fitted with an interface to the ALS-2 Ambient light Sensor.

Measurement Visibility, MOR
Present weather. 14 WMO Table 4680 Codes
Output RS232
Measurement Principle Forward scatter 45°
Measurement Error 5% at 1,500m
Sensor Power 9 – 36 V DC (2W)
Window heating and contamination monitoring Fitted (1.7W)
Operating Temperature -40°C to 60°C
Operating Humidity 0 – 100% RH
Protection rating IP66/IP67
Weight 2.7 kg
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