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Hydreon Solid-State Rain Sensors

Rugged, maintenance-free Weather Station tipping bucket substitute
The rain detection solution

Rain Gauges

Rain Gauge The Hydreon Optical Rain Gauge family is a reliable and cost-effective choice for precipitation measurements. The sensor package is about the size of a tennis ball and completely sealed from the environment. A built-in mounting arm allows for convenient mounting to weather station masts, buildings, and other infrastructure.

The Rain Gauge senses water hitting its outside surface using beams of infrared light, modeling the principle used in automotive rain-sensing windshield wiper controls. The optical gauge bounces the infrared beams within the sensor lens, and as rain drops hit the surface, the infrared light escapes through. Changes in the intensity of the infrared beams during rainfall are directly correlated with the size of the rain drop. The system automatically compensates for condensation and very small drops; it can detect rain drops less than a half millimeter in size!

Optical sensing technology overcomes many of the shortcomings of conventional tipping bucket rain gauges. The sensor works in mobile environments, there is no collecting funnel to clog with leaves, and the round shape makes it essentially self-cleaning. With a range of accuracies available, applications now include a tipping bucket rain gauge replacement. The compact size makes them ideal for wet weather notification systems or remote rain gauges where periodic maintenance is not possible.

Rain Gauge cross section

The patented Rain Gauge optical design keeps the beams inside the sensor, away from the influences of falling leaves and spiderwebs.

Applications for the Rain Gauge

The Hydreon Optical Rain Gauge family is suitable for almost any application that requires a reliable and sensitive rain sensor, including:

Tipping Bucket

Replace your tipping bucket with a low maintenance alternative

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“It’s Raining”

Close a skylight at the first sign of rain, and open it when it stops

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Drop Detection

Provide drop detection for your own external data interpretation

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Wiper Control

Control a wiper system on boat, ship, locomotive, and more

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Irrigation Control

Measure both rain accumulation and rain intensity

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Condensation Sensing

Reliably detect condensation or frost

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Questions? Email us at info@hydreon.com