Campbell Scientific HydroSense® Soil Water Content System (CS620, CD620) - Manual (Page 7)

HydroSense Soil Water Measurement System (CD620, CS620)
Weight
390 g (14 oz)
Cable Spiral cable, 200 cm extended.
*saturation is typically around 50% volumetric water content
3. Unpacking and Setup
• Remove the protective strip from the display window.
• Screw the rods into the threaded inserts of the CS620. Use the open-
ended wrench to tighten the nut on the end of the rods, ensuring that the
rods are securely attached. Threads should be clean before rods are
screwed into the CS620 (see Section 8.2).
In December 2009, the rods were redesigned and now include a
nut. The 7/16th open-ended wrench is shipped with the CS620
HydroSense sensor for tightening and loosening this nut. Rods
shipped prior to December 2009 had a disc-shaped collar instead
of a nut. NOTE
• Connect the probe to the CD620 display unit by mating the coiled cable
connector to the connector on the display unit.
The connector is a push-pull type and can be damaged if
twisted while connecting or disconnecting. CAUTION
• The READ button is used
1) to power-up HydroSense,
2) to make a measurement,
3) and in combination with the MENU button to select options.
Press the READ button and check that HydroSense is in Water
Content Measurement Mode. The display should be similar
to the following graphic but may have different numerical
values.
READ
ENTER
VWC 0% P12cm
Period 0.77ms
• An NC after VWC indicates the probe is not properly connected.
• If it is necessary to change operating modes, the HydroSense must be in
sleep mode (no display). The unit automatically goes into sleep mode
after approximately two minutes of inactivity. To change modes, press
3