GT3-15 4-20mA Tensiometer Transducer
The vacuum inside the tensiometer is measured by a pressure transducer, which gives a continuous analogue output signal. This version of the GT3-15 has a 4-20mA current output. A resolution of 0.1 kPa (1 cm H2O) can be attained for the GT3 Tensiometer Transducer.
GT3-15 Tensiometer Transducer 0 kPa to -100 kPa Features
- Pressure and suction measurements (0 kPa to -100 kPa)
- Rapid response
- Temperature compensated in the range 0–50°C — typical shift 0.5% full scale.
Measuring Principle
The soil water tension is transmitted via the ceramic cup into the tensiometer. The vacuum inside the tensiometer is measured by a pressure transducer, which gives a continuous analogue output signal.
Resolution and Accuracy
A resolution of 0.1 kPa (1 cm H2O) can be attained for the GT3 Tensiometer Transducer.
The accuracy actually obtained is related to the calibration and resolution of the AD converter. In field applications the values obtained should consider the shaft/cup length of the tensiometer: 1 cm = 0.1 kPa.
| Range: | +100kPa to -100kPa |
| Temperature shift: | Temperature compensated in the range 0–50°C—typical shift 0.5% full scale. |
| Resolution: | 0.1 kPa |
| Accuracy: | ±1.0% span |