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Soil Tensiometers: Monitoring Soil Moisture Levels

Tensiometers are equipment that measures the tension of water held in soil, indicating soil moisture levels. Different types and comparisons with retention curves provide vital information for soil scientists.

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Soil Tensiometers: Monitoring Soil Moisture Levels

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  1. TensiometersYolles DavidSoil Scientist

  2. Tension • Tension –is negative relatively to the atmospheric pressure. • The units to express the tension are similar to those used for atmospheric pressure.

  3. Tensiometer • Tensiometer –Equipment that measures the tension that water is holed in soil. The tension readings are in the range from 0 to 0.80 atmospheres (80 cntibars). In tensions above, air penetrates into the pores of the ceramic cup. The result is, discontinuation between the water in the columns of the ceramic cup to the water in the soil columns. • The tension measured by tensiometer occurs dew to capillarytension(matrix potential) of the soil. • The measurements are not influenced by the osmotic pressure, therefore in saline soils pre calibration is necessary.

  4. The Touching Area Between The Ceramic Cup To The Soil Particles

  5. Mercury Tensiometer

  6. Mercury Tensiometer

  7. Soil Solution Suction Cups And Tensiometer

  8. Soil Solution Suction Cups

  9. Mercury Tensiometer

  10. Vacuum Gauge Tensiometers

  11. Vacuum Gauge

  12. Different Types Of Tensiometers

  13. Comparison Table

  14. Retention Curves In The Tension Level That Tensiometer Is Functional

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