1. Tensiometers Yolles David Soil 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 capillary tension (matrix potential) of the soil. The measurements are not influenced by the osmotic pressure, therefore in saline soils pre calibration is necessary.

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

6. Mercury Tensiometer

8. Soil Solution Suction Cups And Tensiometer

9. Soil Solution Suction Cups

10. Mercury Tensiometer

11. Vacuum Gauge Tensiometers

12. Vacuum Gauge

13. Different Types Of Tensiometers

14. Comparison Table pF Height cm BarsAtmosphere 010.001= 1 milibar0.001 1100.01=1 centibar0.01 21000.1 =10 centibar0.1 310001 = 100 centibar1 41000010 4.171500015 4.503200032

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