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products pF-Meter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


The new measerment procedure of the pF- meter  is based on the registration of the volumetric heat capacity. A ceramic membran get in balance with the soil tensions. Inside the ceramic membran a special sensor measure continuously the water content, witch is adapted to the hydraulic potential. hereby the matrix potential can be measured  active and directly, like a conventionally water filled tensiometer.

 

  • large measuerement range (pF 0.0 to 7.0 = 1 to 10.000.000 hPa / mBar)

  • maintenance free

  • fast reaction (comparable to traditional water filled tensiometer)

  • simultan measurement of soil temperature (accuracy: ± 0.25°C)

  • directly and active measurement of matric potential (using ceramic membran)

  • measurements values not influenced by soil salinity

  • frost proof

  • output signal:(SDI-12) or analoge (0 to 7 volt = pF 0.0 to pF 7.0   / without temperature)
SDI12 sensor for matric potential (soil tensions) and soil temperature
pF-Meter
Measurement networks with up to 24 pF-meters are realisable in connection with the network-compatible GPRS logger from GeoPrecision (i-log).
The pF-meter delivers digital data either in pF-value or in mbar (hPa). The modern, digital SDI12-concept prevents measurement errors so that cable lengths up to 50 m are applicable.
backround data
figures to the measurements
and resolution