The Equitensiometer (Equilibrium tensiometer) is a device for maintenance-free measurement of soil matric potential (suction, water availability for the plants). This device is based on a patented new principle and has many advantages over the normal water-filled tensiometer.
Advantages
- Wide measurement range from 0 to -1500 kPa (compared to water filled tensiometer 0 to -85 kPa)
- Independent measurement of soil properties
- High accuracy: + / -10 kPa or 10%
- Long-term stability due to a patented manufacturing technique
- Absolute maintenance-free even under frost conditions
- Ease of use
- Used worldwide for more than 10 years
Applications
- The Equitensiometer is suitable for stationary long-term monitoring of matric potential in soil
Data Sample
More than 5 years continuous measurement of matric water potential with EQ15. Plot Kranzbergerforst, Technical University Munich
Available Models
- EQ15/Basic for use in up to 40 cm depth
- EQ15/Adapter for use from 40 cm depth
Options / Ordering Information
- Cable extension (please specify in meters)
- Extension pipe for EQ15/Adapter (available lengths: 0.5 m, 1 m, 2 m)
- Installation auger for EQ15/Adapter
- Handheld
- Data logger
EQ15/Basic
EQ15/Adapter
Technische Daten
| Measuring parameter | Matric potential of soil |
| Range | 0 to –1500 kPa (0 to –15 bar) |
| Accuracy | Between 0 kPa and -100 kPa: ±10 kPaBetween -100 kPa and -1500 kPa: 10% |
| Hysteresis | Very low, can accurately follow any changes of matric potential in soils |
| Use area | Monitoring of soil hydrology, plant physiology, soil water status,Irrigation control etc. |
| Environment | Wide ranging soil types for long periods |
| Interface | Input requirements: 5-15 V DC, Current consumption: max. 23 mA, Outputsignal: 100 -800 mV DC. |
| Case material | Stainless steel |
| Dimensions and weight | Length x width x thickness = 17 cm x 4 cm x 2 cm, standard cablelength: 5 m, max. Length: 100 m, weight: 350 g without cable. |