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Summary of Contents for ICT MP306
- Page 1 MP306 Moisture Probe Operation Manual ICT International Pty Ltd PO Box 503 Armidale NSW 2350 AUSTRALIA Phone: [61] 2-6772-6770 Fax: [61] 2-6772-7616 Email: sales@ictinternational.com.au Web: www.ictinternational.com DocRef: Ver1.3...
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Page 2: Table Of Contents
1. MP306 Measurement of Absolute Volumetric Soil Water Percent... . 5 2. MP306 in comparison to TDR Measurement ......6... -
Page 3: Introduction
The needles are made from high quality stainless steel. Then the MP306 can be buried permanently at a location as part of either an input to a data logging system or for an input to an irrigation controller or environmental monitoring system. -
Page 4: Cable Length
2.2.4 Power The MP306 is normally powered by a voltage in the range 7.0 to 18.0 volts using 18 mA of power. It can function satisfactorily within the voltage limits of 7.0 to 18.0 volts provided 18 mA is maintained. -
Page 5: Results
The results from measurement of absolute volumetric soil water percent (VSW%) from prepared soil samples using the MP306 are given in Figure 1. This result is typical of the results obtained from comparative testing of the MP306 in prepared soil samples, for a wide range of agricultural soils. -
Page 6: Definitions
TDR technology are given in Figure 2. This result is typical of the results obtained from comparative testing of the MP306 compared to TDR technology for a wide range of agricultural soils. A Comparison of the MP306 and TDR... -
Page 7: Calibration
Scientists or regulatory authorities may wish to calibrate the MP306 to verify the data measured. In these cases it is simply necessary to compare the MP306 output in mV (0–1 mV) to the VSW% from the soil samples, either prepared in the laboratory or obtained in the field. The resultant regression of these variables will provide the new calibration of the MP306. -
Page 8: Polynomial Lookup Table
0.45 1.05 2090 2090 1005 2.5 Wiring Wiring Red = 7-16V DC The MP306 is supplied with 4.5 m of four core shielded wire. Blue and shield = Analogue Ground (Signal Return) Yellow = signal + Black = DC Ground... -
Page 9: Technical Specifications
MP306 Moisture Probe Operation Manual 2.6 Technical Specifications 2.6.1 Mechanical Diagram 14 mm 14 mm 130 mm 60 mm Figure 3. Mechanical Dimensions 2.6.2 Electrical and Mechanical Specifications Measurement Range 0–100 VSW% Accuracy 2 VSW% after calibration to a specific soil type, or 5 VSW% using the supplied soil calibration Interface Input requirements: 7–18 V DC unregulated...
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