Data Sheet PR2 Profile Probe Systems
Contents
1. PR2 Profile Probe Systems Easy and accurate soil moisture profiles Q Soil moisture content not just trends ine tallationiand conhecton A Q Low salinity and temperature sensitivity Users can choose between the PR2 4 i i measuring at 4 depths down to 40 cm or O Portable meter option for convenient the PR2 6 measuring at 6 depths down to 4 multi site measurement 100 cm The nominal sensing depths are 10 20 30 40 60 and 100 cm The PR2 access tube requires an installation hole 27mm in diameter allowing easy installation and minimal soil disturbance Access tubes are a Dedicated DL6 Logger option for continuous monitoring The PR2 Profile Probe uses newly patented manufactured to strict tolerances and are sensing technology making it possible to exceptionally strong and durable in the soil measure soil moisture content in a range of Correct e I ae a UE recommen e use Of our specially soil types and across a wide range of nutrient designed augering equipment see next levels including saline soil conditions page The PR2 is constructed from the highest grade components and materials to ensure robustness in harsh environments Reliable environmentally sealed IP68 connectors enable a wide range of cable length and connectivity options to be supported This flexibility makes sensor connection and disconnection quick and easy A PR2 combined with an HH2 readout unit enables a single probe to be used at differen2. manual PR ASK1 L Augering starter kit long For access tube installation long or short tubes Includes all items in PR ASK1 S Kit plus finishing auger and mallet PR AKC1 Augering kit complete For access tube installation long or short tubes Includes all items in PR ASK L Kit plus flexicanes carrying bag and cleaning rod PR AUG2 25mm spiral auger for dry sandy soils For details of individual augering items please enquire 128 Low Tel 44 1638 742922 Fax 44 1638 743155 Tel 06 36301456 www lombardemarozzini com Differences between the PR1 and PR2 The PR1 Profile Probe was an excellent choice for measuring water content profiles in sandy and silty soils but has now been discontinued The PR2 is designed for optimal performance in all soil types even in difficult soils such as heavy clay and R saline soils It features l O Completely new patented sensing electronics to meet the needs of scientific researchers and discerning growers Polycarbonate rod for optimal dielectric properties improved performance and superior dimensional stability QO Environmentally sealed IP68 connector for versatile connectivity The PR2 uses the same access tubes as the PR1 making it easy to upgrade existing installations However please see page 2 for information on the importance of correct installation Profile Probe Ordering information PR2 4 Profile Probe 40cm no cable PR2 6 Profile Pro
3. pore water conductivity Soil sampling Vertically 95 sensitivity within 50mm volume of upper ring of each pair Horizontally 95 sensitivity within a cylinder of radius 100mm Environment 0 to 40 C for full accuracy specification 20 to 70 C full operating range IP67 rated when installed in access tube Full accuracy achieved within 1 second 7 Minimum 5 5V DC with 2m cable 7 5V with 100m Maximum 15V DC PR2 4 consumption lt 80 mA Power requirement PR2 6 consumption lt 120 mA 4 PR2 4 or 6 PR2 6 analogue voltage outputs 0 to 1 0V DC corresponding to 0 to 0 6 m m mineral calibration Cable Standard and extension cables see Ordering Information Construction 25 4mm polycarbonate with pairs of stainless steel rings Size weight PR2 4 length 750mm Weight 0 6kg PR2 6 length 1350mm Weight 0 9kg i Accuracy when installed in the field will depend on soil type soil homogeneity and the care taken over installation The quoted accuracy figures were obtained under uniform and controlled conditions 2 Minimum 1 second power up recommended for full accuracy BI 100m is the maximum length for stated performance accuracy Longer cables can be used and compensated for Augering Kits Ordering Information PR ASK1 S Augering starter kit short For access tube installation short tubes only Includes 24mm pilot auger stabilisation plate access tube insertion rod and user
4. be 100cm no cable All Profile Probes come fitted with IP68 connector and are supplied with user manual protective tube spare centring springs and O rings NB CABLE MUST BE ORDERED SEPARATELY Standard cables for PR2 PRC d HH2 1 5m cable IP68 M12 connector to 25 way D socket IP54 Connects PR2 to HH2 Moisture Meter PRC M12 05 5m cable IP68 M12 connector to IP68 M12 connector Connects PR2 to DL6 Soil Moisture Logger PRC w 05 5m cable IP68 M12 connector to bare wire Cable connects PR2 to DL2e and other data loggers Extension cables for PR2 EXT M12 05 5m cable IP68 M12 connector to IP68 M12 connector Connects to PR2 or to any EXT M12 cable Cable is identical to item PRC M12 05 EXT M12 10 10m cable IP68 M12 connector to IP68 M12 connector Cable connects to PR2 or to any EXT M12 cable EXT M12 25 25m cable IP68 M12 connector to IP68 M12 connector Cable connects to PR2 or to any EXT M12 cable Access tubes and Profile Probe accessories ATS1 Access tube short 554mm x 28mm diameter Includes cap bung and collar For use with PR2 4 ATL1 Access tube long 1154mm x 28mm diameter Includes cap bung and collar For use with PR2 6 PR2 SP PR2 Profile Probe spares kit PR CB2 Protective carrying bag suitable for Profile Probe and HH2 Moisture Meter or Pocket PC Includes space for access tube cleaning rod Im Lombard amp Marozzini strumentazione e sistemi per l industria e la ricerca Via A Albr
5. ect diameter The goal is to produce optimal contact between the soil and the wall of the access tube However if substantial stoniness or compaction or the presence of voids foreign bodies or soil instability are features of a particular site it may not always be possible to install an access tube successfully Three types of kit are available but please note that for dry sandy soils a PR2 AUG2 25mm spiral auger should be ordered in addition to the selected kit PR ASK1 S Augering Starter Kit short Only recommended for installing short access tubes type ATS1 for PR2 4 in soft soil or if backfilling is acceptable For example in an irrigation monitoring application where accuracy is not a key concern an oversized hole could be partially dug out with a small spade and the soil replaced by hand Only the lower portion of the hole would be augered Comprises 24mm pilot auger stabilisation plate access tube insertion rod and user manual PR ASK1 L Augering Starter Kit long For installing both short and long access tubes types ATS1 and ATL1 for PR2 4 and PR2 6 in most soil types Based on the PR ASK1 S short kit plus a finishing auger and a dead blow mallet PR AKC1 Complete Augering Kit For installing both short and long access tubes in most soil types Based on the PR ASK1 L long kit with the addition of a carrying bag cleaning rod and flexicanes Complete Augering Kit PR AKC1 Shows a Stabilisati
6. icci 9 00135 Roma PR2 systems 1 Apr 05
7. inimise the need for opening the case data is collected via an external RS232 socket and the status of the logger can be checked using a vibration activated LED DL6 Loggers include a novel accelerated logging feature to allow the tracking of wetting fronts HH2 Moisture Meter Readout and data storage for Profile Probes and other Delta T soil moisture sensors O volume and water deficit readings The HH2 ts a versatile readout unit that provides an easy and convenient way to display and store readings from Profile Probes With the HH2 and PR2 combination a Probe can be moved from access tube to access tube enabling large amounts of soil moisture data to be collected at multiple sites The HH2 reads and stores the soil moisture content at either 4 or 6 depths simultaneously and can calculate the water deficit The HH2 auto detects the number of sensors present in each Profile Probe Customers who already have an HH2 Readout Unit will require an upgrade prior to using it with a PR2 Please contact Delta T or your local distributor for further details User defined soil types Standard generalised calibrations for mineral and organic soils are supplied with the HH2 The software also permits up to 5 extra user defined soil calibrations to be characterised and stored for later use Water Deficit Reading The HH2 automatically calculates the water deficit based on data from the individual sensors of a PR2 This indicate
8. on plate b Pilot auger c Finishing auger d Insertion rod e Short and long access tubes not part of PR AKC1 PR EXK1 Access Tube Extraction Kit Heavy duty system for removing installed tubes Upgrades Customers with older augering systems such as the PR AK1 may be able to reuse some of the components Please enquire for further details Augering Kit Features The key components are Stabilisation plate to keep the auger vertical A major contribution to readings errors arises from conical enlargement of the hole funnelling during the augering process especially in the top 30cm This results in poor contact between the outside surface of the access tube and the surrounding soil The stabilisation plate minimises this effect NB All new augering kits include a stabilisation plate Insertion rod to drive the access tube into an augered hole by applying force to the bottom of the tube normally by hammering This new technique reduces the flexing that can produce air gaps around the access tube and minimises soil displacement Finishing auger To expand augered pilot holes to the exact diameter required for an access tube a new type of auger has been designed This adjustable finishing auger produces straight smooth sided holes in most soil types see image left l PR ASK1 S PR ASK1 L PR AKC1 Normal sll up to 40am dept Normal soils up to 100cm depth a a a ae VII e For dry sandy soils the PR2 AUG2 25mm spiral a
9. s the amount of water needed in mm to restore the plot to field Capacity down to a user defined rooting depth Requires field Capacity value to be input Data sheet available on request DL2e Data Logger Q High capacity 15 differential analogue channels expandable to 60 channels a Can log large numbers of Profile Probes QO Versatile logs most types of sensor The DL2e is a weatherproof programmable data logger well suited to remote site applications The DL2e can be used with most sensor types and accepts DC AC resistance counter frequency and status inputs This makes it ideal for weather station and other multi sensor environmental monitoring applications Communication options include GSM modems for automatic data collection from remote sites Data sheet available on request PR2 Profile Probe Specifications Model types PR2 4 and PR2 6 Sensing depths PR2 6 10 20 30 40 60 100 cm PR2 4 10 20 30 40 cm nominal Measurement Volumetric soil moisture content 6 m m or vol Range Accuracy figures apply from 0 to 0 4 m m Full range is from 0 0 to 1 0 m m 1 nee mm a oD Mis i i i 0 to 40 C Typical after calibration to a specific soil type Typical using the generalised soil calibr ations in normal soils 3 3 l 4mm 0 06 m m 0 0 to 0 4 m m Doig C Salinity errors Included in above accuracy figures 50 to 400 mS m 0 5 to 4 dS m
10. t locations providing a low cost multi site solution The PR2 can be permanently installed and teamed with the dedicated DL6 Soil Moisture Logger for continuous soil moisture monitoring Alternatively for multi probe applications the DL2e Logger is ideal handling combinations of Profile Probes and other environmental sensors including weather stations a Out of the box solution supplied with soil calibrations for common aa Wass 7 sl soil types P Hey a IP68 protected connectors for installed for continuous data logging and also PAN versatile connectivity I be used for multi site portable mea tied O Uses access tubes for easy probe insertion and removal meee a gies 1 Patent pending 2 Good accuracy achieved with normal agricultural soils Typical mineral and organic calibrations supplied For less common soils custom soil calibrations can be used for highest accuracy Augering Kits and Access Tube Installation Augering and Extraction Kits a Augering kits for optimal access tube installation Delta T augering kits help you achieve the best possible access tube installation in virtually any soil Profile Probes are used in access tubes inserted into carefully pre augered holes in the soil Correct access tube installation is absolutely vital for accurate measurement of soil moisture profiles To get the best performance from Profile Probes the augered holes should be straight smooth sided and the corr
11. uger should be ordered in addition to the selected augering kit e Only the complete kit includes a carrying bag all augering items can be ordered individually Key V Meets basic need VV Well suited vvv Well suited amp includes items for extra convenience X Unsuitable Data Logging and Readout DL6 Data Logger OQ Ideal for Profile Probes amp ThetaProbes a Complete solution with IP67 weather proof case and battery power a Pocket PC interface for data collection and configuration a 16 000 readings The DL6 is a dedicated data logger optimised for use with Delta T soil moisture sensors It can be used with combinations of ThetaProbes and Profile Probes and also accepts raingauge and soil temperature probe inputs DeltaLINK Software for Pocket PC DL6 perfect partner for Profile Probes The DL6 Logger interfaces seamlessly with a Pocket PC to allow viewing and The DL6 logs a PR2 6 analysis of data in the field 100cm depth or a PR2 4 as shown above with 40 cm depth later transfer to a PC Full PC software capability is available when used with any iPAQ 2200 Series Pocket PC PDA The The PRC M12 05 cable makes connection easy and the DL6 PC software simplifies sensor configuration and DeltaLINK software and data collection connection cable are Data sheet available on available as a kit request The DL6 is well suited to both research applications and irrigation monitoring To m
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