The laser-based snow depth sensor Lufft SHM31 stands for millimeter-accurate snow level detection over long distances in all weather conditions without any maintenance, due to opto-electronic/laser based rangefinder technology.
Millimeter-accurate snow levels in all weather conditions: The SHM 31 operates with a visible, easy-to-measure measuring beam. The snow depth is given up to 15 meters within seconds, millimeter-accurate and reliable. Various heating functions significantly extend the lifetime of the laser diode and allow high-quality measurement data in all weather conditions. Regular maintenance becomes redundant with the SHM 31. A very robust housing and an elaborate operation principle allows almost no maintenance work throughout the lifetime of the sensor.
- Snow depth
- opto-electronic measuring technique (rangefinder; laser distance sensor) with eye-safe laser
- Determination of snow depth over long distances, heating options allow high quality measurements in all weather conditions, simplified installation due to automatic inclination angle compensation
- RS485 & RS232 with Modbus RTU, UMB, UMB-ASCII 2.0 & SDI12 protocol
|Dimensions (LxWxH)||302 × 130 × 234 mm|
|Temperature range||-40 … +50 °C|
|Relative humidity||0 … 100%|
|Snow Depth||0 … 15 m|
|Mounting distance to surface||0.1 … 16 m|
|Accuracy (snow depth)2||± (5 mm + 0.06 %)|
|Intermediate precision/ reproducibility||5 mm|
|RS485||Modbus RTU , ASCII, UMB protocol|
|Data transfer mode||Polling (UMB, ASCII, SDI-12); Auto telegram output (ASCII)|
|typ. power consumption at 24VDC and 10 s measurement interval||without heater: approx. 0.7 W; with window heating: approx. 3.4 W|
|Power supply||12 or 24 VDC, tolerance +/- 15%|
|Maximum power consumption(connecting power with heater on)||18 W|
|Laser classification||Laser class 2 (IEC 60825-1:2014);
complies with 21 CFR 1040.10 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007
|EMC||EN 61326-1:2012 (industrial standard)|
|EC||2014/30/EU & RoHS 2011/65/EU|
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