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Fruit Dendrometer – Type DF5
Differential Voltage Mode ( 2 dendrometers)
Connection
st
1
nd
2
Program Syntax
ExciteV (Vx1,2500,0)
VoltDiff(DiffVolt(),2,mV2500,1,True,0,_50Hz,Mult(),Offs())
If Multiplier=4.4, Offset=0, the results are measured in microns.
An interval 0.5-hour for data collection can reveal the diurnal course of diameter changes very well.
6. Adjustment and maintenance
The sensor is protected against water droplets but is not waterproof.
Depending on the growth rate of the fruit, the sensor should be reset after some time. When
the output approaches 11 mm, the sensor needs to be reset.
To do so, relax the knurled-head screws and move the sensor body slowly along the slide rail,
until the sensor rod is pushed out completely. Then slowly move the dendrometer body along
the sliding rail in the opposite direction, until the sensor rod is pushed in again by about 2-3
mm and lock the dendrometer at the desired position by firmly tightening the two knurled-head
nuts.
When the sensor is correctly installed, it will function under outdoor conditions without the
need for further maintenance.
Cable Color
dendrometer
Yellow
Green
Brown
White
dendrometer
Yellow
Green
Brown
White
Input Port
1H
1L
Vx1
Ground
2H
2L
Vx1
Ground
4
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