A multitude of sensors, both with analog or digital interface are supported. 

• 4x thermistor and 2x electrode pairs with internal quad multiplexer (sensor rod)
• Linear potentiometer (crack meter)
• Various thermistors (temperature probes, squid, thermistor chain)
• Electrodes with internal multiplexing/conditioning circuitry (rock moisture)
• Earth Pressure Cell
• Digital DCX pressure sensor (ce and water pressure)
• Analog differential measurement on electrodes (self potential)
• Decagon soil moisture
  

Sensor rods and thermistor chains

The sensor rods and thermistor chains and consist of a mechanical and electronical assembly of eight individual sensing elements. In the case of the sensor rod these are four thermistors (measuring temperature) and four electrode pairs that measure the direct current resistance of the rock as indicator of its liquid water content. The sensor rods are placed in near-surface borings with a diameter of 14mm that are drilled perpendicular to the rock surface. Different measurement channels of the senor elements are switched by the internal electronics of the sensor rod. The position of the in-rod electronics at the tip of the sensor rod, minimizes measurement errors due to temperature fluctuations. Measuring temperatures at four depths allows the analysis of near-surface heat fluxes. This leads to a better understanding of the processes that govern the subsurface temperatures in steep bedrock. Similarly the information about changes in liquid water content may give insights to ice formation processes and rock fracturing in the active layer of high-alpine permafrost bedrock. The thermistor chains measure six to eight temperatures along a cable that is placed within a rock cleft or in a borehole within steep ice faces. They are electronically identical with the sensor rods.