Adjustment And Maintenance - Ecomatik DR2 User Manual

DR2 Radius Dendrometer
Campbell Data Logger (CR1000)
The dendrometer can be measured both in single-ended voltage as well as differential
voltage mode. Differential voltage mode provides better accuracy. But single-ended mode
requires half as many channels as differential mode. One CR1000 can include 16 den-
drometers in single-ended mode, but only 8 dendrometers in differential mode.
Single-ended Voltage Mode ( 2 dendrometers)
Differential Voltage Mode ( 2 dendrometers)
An interval 0.5-hour for data collection can reveal the diurnal course of diameter changes
very well.

6. Adjustment and maintenance

Ensure that no falling branches, fruits or snow land on the sensor. The sensor is protected
against water droplets but is not waterproof.
Connection
Cable Color
st
1 dendrometer
nd
2 dendrometer
Program Syntax
ExciteV (Vx1,2500,0)
VoltSe(SEVolt(),2,mV2500,1,True,0,_50Hz,Mult(),Offs())
If Multiplier=10.16, Offset=0, the results are measured in microns.
Connection
Cable Color
st
1 dendrometer
nd
2 dendrometer
Program Syntax
ExciteV (Vx1,2500,0)
VoltDiff(DiffVolt(),2,mV2500,1,True,0,_50Hz,Mult(),Offs())
If Multiplier=10.16, Offset=0, the results are measured in microns.
Yellow
Green
Brown
White
Yellow
Green
Brown
White
Yellow
Green
Brown
White
Yellow
Green
Brown
White
3
Input Port
1H
Ground
Vx1
Ground
1L
Ground
Vx1
Ground
Input Port
1H
1L
Vx1
Ground
2H
2L
Vx1
Ground