SDMS40 Multipoint Schneesensor
Erkennt Schneefall und -schmelze
wetter  wasser  energie  gas flux and turbulence  bauwerke  boden


Der SDMS40 ist kostengünstiger laserbasierter 2D Multipoint-Schneefallsensor. Frühere Laser-Schneesensoren waren kompliziert und teuer, der SDMS40 bietet nun eine moderne Alternative. Performance und Zuverlässigkeit des Sensors wurden gründlich getestet (lesen Sie die Veröffentlichung dazu hier). Der SDMS40 liefert akkurate Daten mit robustem Design zu einem vernünftigen Preis.

Die SDMS wurden in Kanada über drei Winter getestet und hat sich durch Genauigkeit und Robustheit bewährt.

Funktionen und Vorteile

  • Detects the onset of snowfall or snowmelt quickly and reliably
  • Proven performance by field tests over three winter seasons from 2013 to 2015
  • Allows easy installation on poles, building walls, or any structure
  • Can be used as an additional gauge to existing weather stations
  • Compact and light gauge structure
  • Less sensitive to ground conditions
  • Filters out noise input caused by obstacles and abnormal situations
  • Can operate on natural ground and different types of snow plates
  • SDI-12 and RS-232 output


SDMS40 with SDMS40CBL replacement cable (sold separately)


Target Area Diameter 30 to 200 cm (11.8 to 78.7 in.) depending on installation height
Half Angle
Snow Depth Measurement Method Multipoint laser scanning
Number of Scanning Points 36
Measurement Range > 10 m (> 32.8 ft)
Mounting Height 1 to 5 m (3.3 to 16.4 ft) above maximum expected snowfall depth; maximum distance to targets is > 10 m (> 32.8 ft)
Gauge Pointing Angle 0 to 45°
Accuracy ±3 mm
Resolution 1 mm
Operating Temperature Range -40 to +50°C
Power Supply Requirements 12 to 15 Vdc, 2 A
Enclosure Classification IP67
Laser Classification 2
RoHS Compliant
Dimensions 12 x 28 x 10 cm (4.72 x 11.02 x 3.94 in.)
Weight ~1.8 kg (~3.97 lb)

Current Draw

Standby 50 mA
Active 250 mA
Heater 1300 mA


Communication Interfaces RS-232, RS-485, SDI-12
Maximum Baud Rate 57.6 (RS-232 and RS-485)
Default Baud Rate 9600

Kompatibel mit

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.


Product Compatible Note
CR1000 (retired)
CR1000 (retired)
CR1000 (retired)
CR1000 (retired)
CR1000 (retired)
CR1000 (retired)
CR1000 (retired)
CR1000 (retired)
CR9000X (retired)
CR9000XC (retired)


SDMS40 Example Programs v.1 (4 KB) 13-08-2020

Three example CR1000X programs. Two programs use SDI-12 and one program uses RS-232. All example programs read the sensor parameters and perform daily diagnostics. One SDI-12 program includes a constant table to allow the user to change the height and initial snow depth as needed for manual calibration. These programs require SDMS40 firmware v 7.4e or higher.

SDMS40 Firmware Update v.7.4e (864 KB) 26-06-2020

Latest firmware and utilities for the SDMS40.

Liste der Änderungen