2
8
This provides automatically processed sap flow results in Raw Heat Pulse Velocity,
Corrected Sap Velocity and Sap Flow. The Raw Heat Pulse Velocity can be used in
Sap Flow Tool Software to post process the data
,
H
owever, Corrected Sap Velocity
and Sap Flow cannot be reprocessed once logged in these units. In order to use the
Corrected Sap Velocity and Sap Flow data automatically logged by the Sap Flow
Meter, you must enter the relevant correction parameters
into
the Corrections tab to
enable the onboard processing of the measured raw data. This feature is suitable
where a great prior knowledge about the species being measured
is
known,
or
indicative
values
of
sap
flo
w
without
the
necessity
for
absolute
precision
and
accuracy
of
sap
flo
w d
ata
is
needed
quickly.
10.3
Measurement Mode
The Heat Ratio Method involves a pulse of heat input to the water conducting
xylem
or
sapwood
of
the
plant
to
measure
the
flo
w
of
water.
In
order
not
to
compound the effect of the heat pulse it is recommended to allow time for the heat
to move through the system.
Typically 10 minutes is adequate to achieve this and,
as such is the minimum recommended logging interval. Shorter logging intervals
are possible for academic research purposes. Other typical logging intervals such as
15 minutes, 20, 30 and 60 minute intervals are available
.
Note:
when changing the logging interval it is necessary to click the
“Update Measurement Options”
icon to make the change take effect.
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Enabling better global research outcomes in soil,
plant & environmental monitoring.
10.2 Sap Flow Mode
