Description
The PR2 Profile Probe provides easy and accurate soil moisture profiles
• Soil moisture content – not just trends
• Low salinity and temperature sensitivity
• Portable meter option for multi-site measurement
• GP2 and DL6 Logger options for continuous monitoring
Dual purpose:
The unique PR2 Profile Probe can be installed for continuous data logging and can also be used for multi-site, portable measurements with an HH2 hand-held readout unit.
The PR2 uses patented sensing technology, making it possible to measure soil moisture content in a range of soil types and across a wide range of nutrient levels, including saline soil conditions.
Installation and connection:
Users can choose between the PR2/4, measuring at 4 depths down to 40 cm, or the PR2/6, measuring at 6 depths down to 100 cm. Th e nominal sensing depths are 10, 20, 30, 40, 60 and 100 cm.
Profile probes are used in access tubes inserted into augered holes in the soil. Access tubes require an installation
hole only 27 mm in diameter, allowing easy installation and minimal soil disturbance. They are manufactured to
strict tolerances and are exceptionally strong and durable in the soil. Correct installation is essential and we recommend the use of our specially designed augering equipment.
Robust:
The PR2 is constructed from the highest grade components and materials to ensure robustness in harsh environments. Reliable, environmentally sealed IP68 connectors provide a wide range of cable length and connectivity options. This flexibility makes sensor connection and disconnection quick and easy.
Data logging:
The GP2 and DL6 data loggers are well suited to Profile Probe recording.
| Brief Specification | |
| Range | 0 to 0.4 m3.m-3 |
| Accuracy | ± 0.04 m3.m-3 |
| Output | PR2/6: 6 x 0 to 1.0 V [2]
PR2/4: 4 x 0 to 1.0 V |
| Power | 5.5 to 15 V [3]
PR2/6: ~120 mA for 1 s PR2/4: ~80 mA for 1 s |
| Sensing depths (nominal) | PR2/6: 10, 20, 30, 40, 60,
100 cm PR2/4: 10, 20, 30, 40 cm |
| Sampling volume | Vertically: ~95% sensitivity
within ± 50 mm of upper rings Horizontally: ~95% sensitivity |
| Size (length x dia) | PR2/6: 1350 x 25.4 mm
PR2/4: 750 x 25.4 mm |
| Environmental | IP67 (when installed in
access tube) |
| Access tubes | |
| Size (length x dia) | ATL1: 1154 mm x 28 mm
ATS1: 554 mm x 28 mm |
