TOPICS Products Guide TERRA-TECH, INC. 1-1-A1208,Sanda-Machi Hachioji-City, Tokyo 193-0832 Japan TEL: +81-42-662-4122 FAX: +81-42-662-4120 info@ttij.com	Radius Dendrometer (Type DR) For measuring changes in radius. Suitable for diameters>8 cm. The stem is injured by two screws. 　 Diameter Dendrometer (Type DD) For measuring changes in diameter. Suitable for diameter<20 cm (>20 cm on request). No injury to plant. The frame can be reduced to meet any size of plant. Circumference Denrometer (Type DC) For measuring changes in circumference of stem and fruit. Suitable for diameter>2 cm, no injury to plant. Very light, a complete sensor without cable is only 16 g. Fruit and Vegetable Dendrometer (Type DF) For measuring changes in diameter of fruits, vegetables and cereals. Suitable for diameter<11 cm (>11 cm on request), The anti-move system ensures the centered position of the object, no injury, the frame can be reduced to meet any small size of plants. 　 Vertical Dendrometer (Type DV) For measuring vertical variation of one section of plant stem. The data reflect important parameters of plant physiology: 1) The variation of water content in the plant body and xylem water potential, respectively; 2) The variation of plant orientation during growth. If using three DV, the effects of water potential and of plant orientation can be separately detected. Type DD Diameter Dendrometer DF Fruit Dendrometer DR Radius Dendrometer DC Circumference Dendrometer DV Vertical Dendrometer Frame Use area For measuring stem diameter and leaf thickness For measuring fruit diameter For measuring stem raidus For measuring stem and fruit circumference For measuring vertical variations of tree trunk,this is an indirect measure of xylem water potential in the tree body. Suitable for plant size Diameter from 0 to 20cm (>20cm on request) Diameter from 0 to 11cm (>11cm on request) Diameter >8cm Diameter from 2 to 32cm (>32cm on request) Diameter >8cm Plant injury No No Injured by two screws diameter=6mm No Injured by two screws diameter=6mm Temperture Coefficent Very low Very low Very low Temperature coefficient of th especial wire cable <1.4X10-6 /K Material Stainless steel Stainless steel Stainless steel Stainless steel Stainless steel Size/weight Frame 27X24X1.5cm, case 65g Frame 18X15X1.5cm, < 52g Frame 14X15Ｘ1.5cm, <60g Special wire cable < 3g Special wire cable < 3g Sensor Measurement Range 11 mm without reset, continuously extendable by restting the frame / wire cable Accuracy < 5μm ( meauring with 2 channels), with ulogger<5μm, if use ulogger, 7μm Resolution Depending data logger used, i.e. if use 12 bits logger < 5μm, if use ulogger , 7 μm Linearity ±　0.5% Output signal 0-50,000 Ohm Power supply No power supply required Temperture Coefficient 2 single-ended measurement <0.1μm/ °C 2 single-ended measurement <0.04%/ °C Environment Outdoor condition: -30℃ to 40 ℃　air temperature. 0 to 100% relative air humididty Weight of sensor 13 g without frame and cable Cable length 2 m standard, extendable up to 100 m Collection of data Contimuously with data logger,discontinuosly with a voltmeter for more info.>> Dendrometer Catalog (PDF 0.4MB)