Decagon EC-5 Operator's Manual
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EC-5 2 ABOUT EC-52 About EC-5The EC-5 determines volumetric Water Content (VWC) by measur-ing the dielectric constant of the media using capacitance and fre-quency domain technology. The 70 MHz frequency minimizes salinityand textural effects, making this sensor accurate in almost any soilor soilless media. It arrives with factory calibration for mineral soils,potting soils, rockwool, and perlite included in this Operator’s Man-ual.The two-prong design and higher measurement frequency allows theEC-5 to measure VWC from 0 to 100% (VWC of saturated soils isgenerally 40 to 60% depending on the soil type) and allows accuratemeasurement of all soils and soilless medias with a wide range ofsalinities.2.1 SpecificationsMeasurement Time: 10 ms (milliseconds)Accuracy: at least 0.03 m3/m3 typical soils, up to 8 dS/mWith soil-specific calibration: ±.02 m3/m3 (±2%)Resolution: 0.001 m3/m3 VWC in mineral soils, 0.25% in growingmediaPower Requirements: 2.5 VDC to 3.6 VDC @ 10 mAOutput: 10 to 40% of excitation voltage (250 to 1,000 mV at 2,500mV excitation)Operating Environment: -40 to 50 ◦C1Range of Measurement: 0 to 100%Sensor dimensions: 8.9 cm × 1.8 cm × 0.7 cmConnector Types: 3.5 mm (stereo) plug or stripped & tinned leadwires (Pigtail)1Sensors can be used at higher temperatures under certain conditions. Pleasecontact Decagon for assistance.3 |
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