Eijkelkamp 14.26 Soil Moisture Meters: Thetaprobe
• The Thetaprobe soil moisture sensor measures the soil moisture volume percentage by applying the Frequency Domain technique.
• Eijkelkamp 14.26 Soil Moisture Meters: Thetaprobe measures the soil moisture volume percentage by measuring the changes in the dielectric constant. The changes are converted into a millivolt signal proportional to the soil moisture content.
• The sensor consists of a sturdy, watertight synthetic housing which contains the electronics.
• The housing is fitted with 4 stainless steel measuring probes at one end that can simply be pushed into the soil (or other material).
Details• To measure within a measuring range of 5 - 55 volumetric moisture content with an accuracy of 5% with standard calibration and only 2% with soil specific calibration.
• The sensor has an output signal of 0-1 Vdc.
• Sensor is supplied standard with a 5-metre cable and plug for connection to the soil moisture meter or with wire for connection to a datalogger.
• The measurement values are shown on the display of the soil moisture meter and can be stored in the memory (including time and sensor location). These data can be read on a PC.
• Meter comes with built-in conversion characteristics for mineral and organic soils.
• The software allows a further 5 soil specific calibrations to be introduced.
• If the moisture content is measured of other materials the meter will give an output signal in millivolts.
• Soil moisture sensors can be connected easily to a datalogger.
• Also available in the form of a profile probe for use in thin-walled tubes that are installed in the soil.
• The data logger with 6 analogue channels can be used with combinations of Thetaprobes. Up to 16000 readings can be stored in the memory.