Overview, 1. comparison of hydrosense ii and hydrosense(i) – Campbell Scientific HS2 and HS2P (HydroSense II) User Manual
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HS2 and HS2P
5. Turn on the HydroSense II by holding the
button for 3 seconds.
6. Establishing a GPS sync may take up to one minute or more. When the
GPS icon is displayed (
), synchronization has been successful.
Measurements with GPS data can now be taken. See
(p. A-6) for information on toggling the GPS.
The HydroSense II stores positional information (when available),
time, and date with measurements. To reliably take advantage of
the GPS, use the HydroSense II outdoors with a clear view of the
sky. Measurements can be made and data stored without a
(p. 19) signal; however, the HydroSense II Support Software
(HydroSoft) will be unable to later group and display data
geographically.
7. Insert the sensor rods fully into the soil. The HS2P uses a plastic
“bumper” that covers the rod mounting nuts. Insert the rods into the soil
up to the plastic “bumper”.
Only remove the plastic bumper when replacing soil rods and put
it back on when done.
8. To take a measurement, press
. When the hourglass icon ( ) in the
lower right of the screen is extinguished, the measured VWC and period
are shown on the screen.
9. Press
to store the measurement. Assuming the GPS is in sync, follow
the prompts to create a zone.
10. Data are now stored in memory. To retrieve data, first establish a
Bluetooth link with your PC, and then collect data using the HydroSense II
support software. See
Section 8.4, Connecting via Bluetooth
(p. 18) and
Section 8.5, Collecting Data
(p. 19).
4. Overview
The HydroSense II is a portable system for measuring volumetric water content
of soil. It is an improved successor to the HydroSense.
Comparison of HydroSense II and HydroSense(I
) compares features of the
HydroSense II and HydroSense (I).
TABLE 4-1. Comparison of HydroSense II and HydroSense(I)
Feature
HydroSense II
HydroSense (I)
Volumetric water
content and period
Yes, period as μs
Yes, period as ms
Relative water content
& water deficit with
wet and dry references
Yes (10 profiles)
Yes (5 sites)
NOTE
NOTE
3