Eijkelkamp 14.01 EC-Probe For Salinity Measurement
• To determine the salinity of a soil electrically.
• In combination with an earth resistivity meter, the resistivity of the soil is measured, and this reading is subsequently converted into electrical conductivity. This conductivity depends on the structure and texture of the soil, the moisture content and the salinity of the ground water.
• The method is less accurate than a soil sample analysis in a laboratory set-up, but for an estimate of the salinity this method is highly satisfactory.
• Eijkelkamp 14.01 EC-Probe For Salinity Measurements can be used to perform many comparative measurements in a certain area in a short period of time.
• Consist of a stainless steel bar, provided with a detachable handle. The bar is provided with a 10 cm graduation. Inside the actual probe, at the bottom of the bar, there are four electrodes, separated by a sealing ring and a insulation ring.
• Proper contact (= low contact resistance) with the surrounding soil is necessary to facilitate measurements with the EC-probe.
• To establish proper contact, first the gouge auger is used to make a pilot hole to the desired depth. The drilled out soil can be used as a reference sample to determine the calibration curve.
• In every EC-measurement, the temperature of the soil stratum that is to be read must also be measured. For this purpose, the tip of the probe is provided with a temperature sensor.
• Having measured the earth resistivity, the temperature correction factor is determined. The temperature coefficient can be read before the electrical conductivity is calculated.
Details• The standard set includes: the EC-probe, an earth resistivity meter, the single gouge auger, a spatula and a strong transport bag.