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Perimeter Dendrometer DRL26D
◆ The DRL26D data logging sensor is designed to measure perimeter stem growth on large stems 8 cm or larger in diameter (optionally 4 to 8 cm with a base plate). The sensor output is calibrated directly in millimeters of stem circumference growth.
► The sensor is designed for quick and easy installation. It is secured to the object to be measured using a stainless steel strap wrapped around the stem.
► The adhesion pressure is established as a balance between the influence on plant tissues and position stability.
► Installation Notes:
● The sensor should be placed on a relatively straight and evenly shaped part of the stem, in a relatively smooth location with no irregularities in the circumference. The sensor base should sit firmly on all four points. For more information, see the installation manual.
● Increment sensors type rotary position
● Range 64 mm of circumference
● Linearity 1 % of full scale
● Resolution 1 μm
● Internal tmperature accuracy ± 0.3 °C
● Tape strength 15 to 20 N in the whole range, stem diameter independent
● Tape temperature coefficient 16 μm/m,K
● Operating environment temperature -40 to 60 °C
● Operating environment humidity 0 to 100 %
● Memory size (capacity) 256 kB (100,000 readings)
● Battery lifetime with measuring every 10 min ca 4 years
● Measuring interval 5 min to 4 hrs
● Storing interval 5 min to 4 hrs
● Clock accuracy (-10 to 40 °C) better than ±15 sec/month
● Battery SAFT LS14250CNA
● Size 100 x 70 x 100 mm
● Weight (incl. battery) ca 350 g
● Protection IP 63
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