Dendrometer Data Logger DL18
5
For Dendrometer types DR1, DR3, DD-L1, DD-S1, DD-S2, DRO, DRW, DDW, DC1, DV
Micrometer = raw data (V) x 4400
For Dendrometer types DF1, DC2
Micrometer = raw data (V) x 6000
For Dendrometer type DC3, DD-L2, DR2, DF2
Micrometer = raw data (V) x 10160
For Dendrometer type DC4, DD-L3, DF3
Micrometer = raw data (V) x 20320
For other sensor types, e.g. leaf temperature (LAT-B2), surface, tissue or soil temperature
(T-Surface/-Tissue/-Soil), air temperature/humidity (T/RH-Sens) or soil moisture, raw sen-
sor signal will also be recorded in volts. Due to the complex conversion functions of these
sensor types, raw sensor values have to be converted manually after data download to
your personal computer. For conversion, please use the conversion functions as given in
the user
’s manual of the respective sensor (Excel programs for data conversion are avail-
able on request).
Data conversion with the scaling function of the data logger
The scaling function of the DL 18 can be used to automatically convert raw volt signals
from dendrometer measurements into micrometers. For channels connected with other
sensor types (LAT-B2, T-Surface/-Tissue/-Soil, T/RH-Sens, soil moisture), please do not
use the scaling function. In those cases the raw sensor signals will be recorded in volts
and have to be converted manually after data download.
To enable the scaling function for dendrometers, click the scaling button (fig. 7, right side)
and enter the following data in the
table “
Linear Scaling Assistant
”.
Change the value in this field as follows. Other 3 data fields remain un-
changed.
11,000.00000 for DR1, DR3, DD-L1, DD-S1, DD-S2, DRO, DRW, DDW, DC1, DV
15,000.00000 for DF1, DC2
25,400.00000 for DC3, DD-L2, DR2, DF2
50,800.00000 for DC4, DD-L3, DF3
Fig. 8 Enter linearization data
