{"id":1015212,"date":"2017-06-02T13:39:32","date_gmt":"2017-06-02T11:39:32","guid":{"rendered":"http:\/\/blog.lufft.com\/?p=15212\/"},"modified":"2017-06-20T09:02:00","modified_gmt":"2017-06-20T07:02:00","slug":"new-from-lufft-the-laser-based-snow-depth-sensor-shm31","status":"publish","type":"post","link":"https:\/\/blog.otthydromet.com\/en\/new-from-lufft-the-laser-based-snow-depth-sensor-shm31\/","title":{"rendered":"New from Lufft: The laser-based snow depth sensor SHM31"},"content":{"rendered":"

In future, one of our new products will support weather services, road operators, operators of winter sport areas and energy producers in the field of environmental monitoring: The SHM31 is able to deliver snow depths of up to 15 meters. It represents an advancement of the SHM30, which came onto the market in mid-2009.<\/span><\/p>\n

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In future, one of our new products will support weather services, road operators, operators of winter sport areas and energy producers in the field of environmental monitoring: The SHM31 is able to deliver snow depths of up to 15 meters. It represents an advancement of the SHM30, which came onto the market in mid-2009.<\/span><\/p>\n

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New snow height sensor SHM31 compared to its predecessor SHM30<\/span><\/h2>\n

In contrast to the SHM30<\/a>, which has one interface only, the new SHM31<\/a> snow depth sensor is equipped with the three communication interfaces RS232, RS485 and SDI-12. <\/span>Two of them can be used simultaneously. <\/span>In addition, the sensor is compatible with the Lufft standard UMB protocol. <\/span><\/span><\/p>\n

As the new sensor design doesn’t require an extra protection tube, it’s more compact and about 1 kg lighter than its predecessor. <\/span>However, the outer weather protection housing fits on both SHM versions. <\/span>An automatic angle meter simplifies the installation a lot. <\/span><\/p>\n

Furthermore, the avoidance of snow and ice accumulations in front of the lens became more effective. <\/span>A disc heating and an remotely controllable defrost mode ensures that the laser output is always ice-free.<\/span><\/p>\n

Overall, the SHM31 has a is more stable measurement principle than that of the older model, lower power requirements and even a lower price. <\/span>It doesn’t let users down, even under extreme conditions.<\/span><\/p>\n

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Technology of the SHM31<\/strong><\/h2>\n

The measuring principle is based on a spectroscopic laser distance sensor (rangefinder) with a visible and therefore easily adjustable beam. The technology allows the penetration of snow layers in depths of up to 15 meters on diffuse reflective surfaces and works with millimeter-precision. Through the evaluation of the signal intensity, the sensor is capable to differ other materials, e.g. grass from snow.<\/p>\n

Its laser-based measuring method is independent of temperature fluctuations and has a higher measurement accuracy than usual ultrasonic snow depth sensors. Other possible interference factors, e.g. strong precipitation, are compensated by the smart sensor with ease.<\/p>\n

A further decisive advantage is that the snow depth sensor’s robustness and drift-free measurement principle ensure that it runs maintenance-free over the entire operating time. Using the available reference plate set, operators can however verify the accuracy of the measured data directly in the field at any time.<\/p>\n

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The SHM31 features at a glance:<\/h2>\n