Key Feature /Highlights

• • Ultra reliable outdoor precision tensiometer — built to withstand field conditions.
• • Direct measurement of soil water potential; no calibration needed.
• • Measures both negative and positive pore pressures (range –85 kPa to +50 kPa) for full soil‐water potential profiling.
• • Plug and play compatibility with METER ZL6 data logger & ZENTRA Cloud; also works with third‐party loggers via SDI 12 or DDI.
• • Integrated temperature sensor for simultaneous soil temperature monitoring.
• • Rugged shaft material (UV resistant), IP68 sealed connectors, durable ceramic tip with 10 year warranty.
• • Field‐ready: can be installed year‐round (if installed deeper than ~30 cm) and can be refilled/emptied without removing from soil.

Technical Specifications

Application / Usage Areas

• • Field irrigation management: Monitoring soil water potential to decide optimal irrigation timing and amount.
• • Agricultural research: Assess root zone water status, soil drying dynamics, and plant‐available water.
• • Environmental & hydrological studies: Long term soil moisture monitoring, water balance analysis, unsaturated zone flow.
• • Geotechnical & civil engineering: Monitoring matric suction in slopes, embankments or unsaturated soil profiles.
• • Precision agriculture & sensor networks: Integration into IoT/connected systems via SDI 12 and cloud data (ZENTRA).

Benifits /User Adavantages

• • Highly accurate and robust measurement of soil water potential – gives direct insight rather than relying on proxies.
• • Long‐term deployment capable; fewer site visits, less maintenance thanks to durable design and refillability.
• • Real time/near real time data availability via cloud and logger integration – enables timely decisions.
• • Covers both wet and moderately dry ranges (negative and positive pressures) – usable in broad field conditions.
• • Reduced installation hassle thanks to ready to‐install lengths, minimal soil disturbance, integrated temperature sensor.

Best Practices & Consideration

• • Ensure good soil contact around the ceramic tip and avoid air gaps, as these can impair accurate measurement.
• • Install the tensiometer at appropriate depth (preferably deeper than ~30 cm for year‐round operation) and ensure the shaft is secured.
• • Regularly inspect for cavitation (air bubbles) and ensure the unit is filled/refilled correctly via the external refill tube.
• • While no calibration is required, ensure your data logger and software are configured correctly for SDI 12/DDI output.
• • For long cable runs or remote sites, ensure signal integrity and stable power supply (3.6 28 VDC).
• • In extremely dry soil (< 85 kPa) or soil conditions beyond the rated range, note that the unit may reach its limit; consider complementary sensors for very dry ranges.
• • Document baseline measurements after installation and monitor for drift or unusual readings, especially after severe environmental events.