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HydroSense II Soil Moisture Measurement System
6
1 General Description
1.1 Introduction
The HydroSense II is an easy to use, portable device for measuring soil moisture
in terms of volumetric water content (in percent). The three major components of
the system are the display, the sensor and the software. The sensor is available in
two different versions 12cm (CS659) and 20cm (CS658).
As the name suggests the HydroSense II is an updated and improved successor
to the established HydroSense product. Below is a comparison of the features of
the different versions.
Feature
HydroSense (CD620)
HydroSense II
Portable
Yes
Yes
Battery life
2000+ readings
1000+ readings
Probe length
12cm, 20cm (interchangeable)
12cm, 20cm (not interchangeable)
Accuracy
±3% VWC (EC <2dS/m)
±3% (EC≤4dS/m) CS658
±3% (EC≤6.5dS/m) CS659
Water Content mode
Yes
Yes
Period Display
Yes in msec
Yes in μsec
Water Deficit mode
Yes 5 soil profiles
Yes 10 soil profiles
User configurable
Wet & Dry references
Yes
Yes
LCD
2 line x 16 char alphanumeric
128x64 pixel graphic
LCD Backlight
No
Yes
Data Storage
No
Yes 1000+ readings
GPS & Geotagging
No
Yes
GPS Zones
No
Yes
Date & Time
No
Yes GPS accuracy where possible
Bluetooth
No
Yes
Firmware updates
Factory only
User updateable
Field carry case
No
Yes
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