Campbell Hydrosense, Instruction Manual

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HydroSense
3
Weight approx 400 gm
Cable Spiral cable, 200cm 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 probe threaded inserts to finger tight, use pliers to
apply a small force and give a snug fit. Threads should be clean before
rods are screwed into probe. (see Section 8.2).
•
Connect the probe to the 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.
•
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.
READ
ENTER
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.
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 and hold
the MENU button then press the READ button. Release both buttons.
Unless the mode is changed again, HydroSense will be in
Water Content
Measurement Mode when READ is next pressed to wake the unit.
•
While holding the probes so rods are in free air, press READ. The VWC
displayed should be between -3% and 3%.
CAUTION