Tension controlled suction probe systems

• The control of suction probes in accordance with the tension in  the surrounding soil permits soil solution to be drawn from various soil moisture areas with adjusted pressure. The respective vacuum results from the prevailing tension amplified by a freely selectable amplification factor and / or a freely selectable offset. Up to four stages can be controlled separately from each other on a microcomputer basis. Every stage contains its own vacuum circuit with its own pump. Both the pressure control and the data storage is realised by the integrated logger. The standard device with a tensiometer per stage as set point generator can be extended by additional logger modules to up to 15 set point generators. For operation independent of the mains supply, the power supply can be provided via solar panels or replaceable storage batteries.

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  Advantages

  • Sampling pressure adjusted tothe existing soil moisture tension

• Technical data

  • Suction power:	0,4 l/min per level
  • End vacuum:	0,6 bar
  • Voltage supply::	12V DC replaceable storage battery,solar power or storage batterysupported mains supply
  • Degree of protection:	IP65