logging sensor for long term accurate monitoring of the tree trunk circumference increment
no upper limit in stem diameter
non invasive fixing
low maintenance, easy installation and set-up
increment range 64 mm
resolution less than micrometer
large logging capacity and long battery lifetime
infrared wireless data access
Mini32 software support
Measuring intervals 5 min to 4 hrs
Memory capacity with measuring interval 1 hour ca 6 years
Battery life with measuring interval 1 hour ca 5 years
Circumference increment measuring range 64 mm
Resolution less than 1μm
Internal temperature accuracy ± 0.3 °C
Protection rating IP63
Weight 350 g
Operating environment temperature –40 to 60 °C
Operating environment humidity 0 to 100%
Non invasive fixing by tape
no effect on tree growth
integrated value for whole radial profile in measured height
almost identical thermal expansion of wood and stainless steel
battery replacement possible by keeping the sensor in position on the tree
Precise increment records
efficient tool for field measurement
comprises information of growth, water stress and freezing up of the trunk
low maintenance and energy requirements in comparison with sophisticated measuring systems like sap flow for instance
together with the measurement of soil water potential it gives realistic picture of drought stress and the tree response to it
Measure trees with different diameter by simple changing the base plate
Mini32 software
graphically oriented software intended for work with long time series
automatic lining up function for increment records
curve fitting and growing parameters calculations
fast brief statistics
for more informations look at EMSsoftware
