SPA-2 Snow Pack Analyzer

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Determination of snowpack-properties can be very challenging as they vary significantly in space and time. The SPA-2 snow pack analyzer measures the volumetric contents of ice and water within a snowpack to calculate Snow Water Equivalent and density.

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Physical and enironmental
Power supply 9...28 DC; Reerse oltage protection oeroltage protection
Power consumption at 12 DC max. 65 mA actie 1mA in sleep mode
Outputs RS-485
  SDI-12
  Analog output 4…20 mA (14 bit, max. load 200 Ω)
  Digital output (low: 0, high: supply, max. 30 mA at supply-0.5 )
Operating temperature -35…60 °C (-31…140 °F)
Storage temperature -35…60 °C (-31…140 °F)
Rel. humidity 0...100 %
Protection rating Sensors IP 66
Controller IP 54 (IP 66 if contained in electrical cabinet)
Lightning protection Integrated protection against indirect lightning with a discharge capacity of 6 kA Ppp

Determination of snowpack-properties can be very challenging as they vary significantly in space and time. The SPA-2 snow pack analyzer measures the volumetric contents of ice and water within a snowpack, and together with the snow depth calculates the snow water equivalent (SWE) and snow density. 

By measuring the complex impedance along multiple, 4.8 m long, ribbon-shaped sensors, the SPA-2 acquires area-averaged data about the snowpack at different depth. Other than that, the snow height is precisely measured with the contact-free ultrasonic level sensor USH- 9. This sensor- combination provides an automatic measurement system to continuously monitor the snowpack development for hydrological, agricultural and other applications.