Round Bottom Ceramic Cups
Round Bottom Cup with Neck Top
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Soilmoisture Equipment manufacture a range of Round Bottom Ceramic Cups with necks suitable for connecting to tensiometers and other similar equipment for the measurement of soil water potential.
The Round Bottom Cup with Tapered Neck Top is available in one size, but in four different pressure and flow castings:
- 1/2 Bar Standard Flow
- 1 Bar Standard Flow
- 1 Bar High Flow
- 2 Bar High Flow
- 48.26 mm (1.471″) Outside Diameter
- 1 Bar Standard Flow
- 1 Bar High Flow
- 2 Bar Standard Flow
- 3 Bar Standard Flow
- 5 Bar Standard Flow
- 9.525 mm (1.900″) Outside Diameter
- 1/2 Bar Standard Flow
- 1 Bar Standard Flow
- 1 Bar High Flow
- 54.102 mm (2.375″) Outside Diameter
- 1 Bar High Flow
Each size is available with a selection of pressures and flow rates:
| Air Entry Value | Flow Rate | Bubbling Pressure (psi) | Approximate Porosity (% Vol.) | Saturated Hydraulic Conductivity (cm/sec) | Maximum Pore Size (µm) | Flow Through ¼ Inch Plate (ml/hr/cm2/14.7 Psi) |
| 0.5 Bar | Standard | 7 to 9 | 50% | 3.11 x 10-5 | 6.0 | 180 |
| 1 Bar | High | 19 to 28 | 45% | 8.6 x 10-6 | 2.5 | 50 |
| 1 Bar | Standard | 20 to 30 | 34% | 7.56 x 10-7 | 1.7 | 5.0 |
| 2 Bar | Standard | 38 to 45 | 32% | 6.30 x 10-7 | 1.1 | 4.2 |
| 2 Bar | High | 32 to 42 | 38% | 6.93 x 10-7 | 1.3 | 4.6 |
| 3 Bar | Standard | 46 to 70 | 34% | 2.5 x 10-7 | 0.7 | 1.6 |
| 5 Bar | Standard | 80 | 31% | 1.21 x 10-7 | 0.5 | 0.7 |
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