Rain detector

Rain detector from OTM Solutions Pte Ltd

By: OTM Solutions Pte Ltd  07/03/2014
Keywords: Rain Detector

The HD2013.2 is a rain detector based on the capacity principle. The capacity value of the sensitive element, on an alumina rest, changes according to the surface dampened by raindrops. An integrated heater keeps it dry, evaporates water and prevents false signals caused by fog or dew. The heater also activates at low temperatures, melting the snow and allowing to detect snow precipitations. The instrument external circular dome acts as a windshield for the sensor, preventing false indications. The instrument is equipped with three different outputs: a “Rain ON/OFF” output, which detects whether it is raining / snowing (ON) or not (OFF), also used to control a relay coil or similar devices; a 0 - 1 V voltage analogue output (calibrated) and a 1. 5 - 6 kHz frequency output (not calibrated), which provide an accurate indication of current precipitation intensity. The ON/OFF output comes with a delay circuit that indicates the “rain over” condition with a 2 minute delay, so that the “rain over” condition is distinguished from the “light rain” one. The heater can be disabled when power consumption is critical. To do it, set the Heater OFF input on 0 V. If requested when ordering, a bird spike, consisting of a 6-spike ring (spike height: 60mm, diameter: 3 mm), can be mounted.

Keywords: Rain Detector

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