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Soil Moisture, Data Logging, Meteorology and Plant Science
PR2 - Profile Probe
Soil Science

Profile Probe
Profile Probe Profile Probe
Profile Probe Profile Probe


PR2 Soil Moisture Profile Probeundefined

  • Soil moisture content profiles down to 1m
  • Dual purpose - installed and portable
  • Uses access tubes for easy probe insertion and removal

No other soil moisture probe system enables you to monitor your soil water profiles with such ease and flexibility. Install an access tube into the soil, insert the PR2 Profile Probe and press the HH2 [Read] button to display an instantaneous reading, or connect the PR2 to a data logger (GP2, DL6 or DL2e) and leave the system to record soil moisture changes over time.

The PR2 soil moisture probe is built around patented sensing technology which provides unprecedented performance in all soil types, with minimal influence from either salinity or temperature. The PR2/4 model measures soil moisture at 4 depths down to 40 cm or the PR2/6 measures at 6 depths down to 100 cm.

  • Highly reliable field-proven instrument

  • Soil moisture content - not just trends

  • Out of the box solution - supplied with calibrations for common soil types

  • Portable meter option for multi-site measurement 

The PR2 Profile Probe is available in two sizes to measure to a depth of 40 cm or 100 cm.

The PR2/4 has sensing elements at 10/20/30/40 cm

PR2 Profile Probes - soil mositure probes available in 40cm and 100cm sizes

The PR2/6 has sensing elements at 10/20/30/40/60 and 100 cm

Data Logging

Profile Probes are available with analogue or SDI-12 outputs.
For the analogue version, order PR2/4 or PR2/6.
For the SDI-12 interface version, order PR2/4-SDI-12 or PR2/6-SDI-12.
Please note that analogue and SDI‐12 probes cannot be mixed  on the same cable system

Loggers for analogue Profile Probes  
Delta-T offers a choice of two data suitable data loggers. Both have dedicated PR2 Profile Probe input channels and connectors:
          The DL6 Data Logger can log one PR2/6 or one PR2/4 Profile Probe
          The GP2 Data Logger can log up to two PR2/6s or three PR2/4s

Loggers for SDI-12 Profile Probes
The PR2 SDI‐12 is ideally matched to the SDI‐12 enabled GP2 Data Logger. Many SDI-12 Profile Probes can be connected to a single GP2 (actual number depends on cable length, power, and other considerations).

Further details of the PR2 SDI-12 can be found here.

Complete augering kit for soil moisture probe

Augering and Extraction Kits - for optimal Access Tube installation

Profile Probes are used within access tubes inserted into augered holes in the soil - correct installation is vital for accurate measurement of soil moisture profiles. The goal of installation is to produce optimal contact between the soil and the wall of the access tube. The augered holes should be straight, smooth sided and the correct diameter.

Delta-T augering kits help you achieve the best possible access tube installation in virtually any soil.

Click here for information about our augering equipment

Related Products

HH2 Moisture Meter - Readout Unit
DL6 Soil Moisture Data Logger
GP2 Advanced Data Logger and Controller
AUGER PR2 Installation

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