HYPROP 2, an instruments that delivers greater accuracy and is automated. Use together with the WP4C (which measures the dry range), you can create full, high resolution moisture release curve across the entire range of soil moisture.
HYPROP 2 automatically determine unsaturated hydraulic conductivity on undisturbed soil samples placed inside a standard 250mL or 100mL, 2'' diameter sampling ring. Used in tandem with the KSAT, it can generate a hydraulic conductivity curve for any soil type.
When it comes to accuracy and precision, the HYPROP 2 produces more data points (over 100 data points in the 0 to -100kPa range), higher resolution data, more detail, and better information in its moisture release curves.
The HYPROP 2 uses two mini tensiometers to measure water potential at different levels within a saturated soil sample while the sample rests on a laboraty balance. Overtime, the sample dries, and the instrument measures the changing water potential and changing sample weight concurrently. It calculates the moisture content from the weight measurements and plots changes in water potential correlated to changes in moisture content.
- Low time, cost and effort
- Easy to handle and flexible
- Simultaneous measurement of water retention function and hydraulic conductivity
- High validity of the water retention function, especially in the area close to saturation
- Hydraulic functions are consistently verified by a large number of measuring values
- Reliable determination of unsaturated conductivity in the medium water pontential range - independent of model assumptions
- Tensiometers measure beyond typical cavitation point down to -240kPa
- Tensiometers are positioned upside down in the soil sample (undisturbed evaopration and no impact on the tensiometer shafts)
- Reduced tensiometer water loss after reaching the cavitation phase
| Accuracy | 1.5hPa (0 hPa to 820 hPa) |
| Resolution | 0.01 hPa |
| Material/Dimensions (without Sample Ring) | POM, h = 63mm, ⌀ = 80mm |
| Measuring Range for Pressure Transducer | +3.0 hPa to -1000 hPa (-2400 hPa with boiling delay) |
