HS2 and HS2P (HydroSense II)
Contents
1. Appendix A Configuration Menus A 8 Time Synchronization TIME S39HC OH DFF SAVE OK CAHCEL 9 The HydroSense II uses its GPS to provide a very accurate clock Whenever a valid GPS signal 1s detected the clock is adjusted using the received time in UTC and the configured time zone To use GPS synchronization select ON from the list or OFF to ignore the GPS time This menu item does not disable GPS READ position After highlighting a selection from the list press OK To quit the menu press STORE A 9 Display Settings A 10 Contrast DISPLAY SETTINGS LED COHTRAST EALELIGHT ERIGHTHESS EACKLIGHT ON TIME LIGHT SEHSIHG SELECT OK EACE 5 This submenu contains a list of settings related to the screen of the HydroSense II f READ Using the 4 buttons highlight one of the options shown and press OK Alternatively press STORE to exit the menu SET COHTRA T I SAVE OK CAHCEL 9 The contrast of the LCD can be affected by extremes of temperature or lighting This menu controls screen contrast Press the s button to lower the contrast make the image lighter or the gt button to increase contrast darker Please note that the highest and lowest contrast settings should only be required in the most 2 READ l extreme conditions Press OK to save the new setting and STORE to exit Appendix A Configuration Menus A 11 Brightness SET EPIGHTHESS a SAVE OK CANCEL 92. A 6 Date Format DATE FORMAT DO Mr HMH DO Ss VIV MAMA DO SAVE OK CAHCEL 9 This menu sets the format in which dates are displayed throughout the system READ Use the 44 W buttons to choose the desired format and press OK To quit the menu without saving press STORE Appendix A Configuration Menus A 7 Time Zone UTC 10 30 UTC 11 88 UTC 1 28 UTC 12 00 UTC 12 45 SAVE OK CAHCEL The HydroSense II is able to use its GPS to provide a very accurate clock Whenever a valid GPS signal is detected the clock is adjusted using the received time in UTC and the time zone selected in this menu Time zones from UTC 12 to UTC 14 are available Use the following diagram for information on global time zones Use to select a time zone and press EAD 0K To exit without making changes press STORE The HydroSense II supports only standard time it does not automatically adjust for daylight saving time However by incrementing or decrementing to an adjacent time zone daylight saving time can effectively be used if desired ue gt 04 03 Fe 03 02 ain 1009 10 yr 13 yr Summer 5 Winter 14 yr tu Ys so 04 03 03 02 ey 10 11 12 13 yr noDST 05 yr UTC Universal Time 93 fr 03 02 ia QM Source and copyright for this image Wikipedia http en wikipedia org wiki Time_zone 07 7 hours ahead of UTC 3 3 hrs 30 mins behind UTC
3. This menu allows the brightness of the LCD backlight to be adjusted Since the backlight uses a significant amount of power reducing the brightness will extend battery life In bright sunny conditions the backlight has very little effect and generally doesn t help readability so the HydroSense II detects the ambient light conditions and automatically turns off the backlight when exposed to bright daylight Using the lt gt buttons set the brightness to an acceptable level Press READ OK to Save or STORE to quit A 12 Backlight on Time BACKLIGHT OH TIME 1 amp SECOHDS SAVE OK CAHCEL The LCD backlight turns on whenever a button is pressed This menu configures how long it remains lit after each press The lt gt buttons change the period and READ Se i OK will save it Press STORE to exit without saving Setting the backlight on time to Always On will increase average power consumption significantly and drastically reduce battery life A 13 Light Sensing LIGHT SENS IHG DFF SAVE OK CAHCEL 9 In bright sunny conditions the LCD backlight has very little effect on readability so the HydroSense II detects the ambient light level and switches the backlight off in bright conditions This feature can be disabled using this menu Using the 4 READ 4 buttons select ON or OFF from the list and press OK to save the setting gt Press STORE to quit Appendix A Configuration Menus
4. E CAMPBELL SCIENTIFIC WHEN MEASUREMENTS MATTER HS2 and HS2P HydroSense Il IVANVIA GAS Issued 2 4 14 Copyright 2011 2014 Campbell Scientific Inc Printed under licence by Campbell Scientific Ltd CSL 937 Licence for Use The software 1s protected by both United States copyright law and international copyright treaty provisions You may copy it onto a computer to be used and you may make archival copies of the software for the sole purpose of backing up Campbell Scientific Ltd software and protecting your investment from loss All copyright notices and labelling must be left intact The software may be used by any number of people and may be freely moved from one computer location to another so long as there is no possibility of 1t being used at one location while 1t s being used at another Under the terms of this licence the software cannot be used by two different people in two different places at the same time CAMPBELL 57 SCIENTIFIC Campbell Scientific Ltd Campbell Park 80 Hathern Road Shepshed Loughborough LE12 9GX UK Tel 44 0 1509 601141 Fax 44 0 1509 601091 Email support campbellsci co uk http www campbelisci co uk Limited Guarantee The following warranties are in effect for ninety 90 days from the date of shipment of the original purchase These warranties are not extended by the installation of upgrades or patches offered free of charge Campbell Scien
5. 11 5 Operating System Updates Updates to the HydroSense II operating system firmware are made available at or www campbellsci com These updates may provide fixes for known problems add new features change default settings or make improvements to the user interface Normal practice is to keep the HydroSense II operating system up to date For details of the operating system update procedure please refer to the HydroSense II Support Software user guide Updating the operating system will erase all data zones and configuration settings Be sure data are collected and backed up on the computer before performing an update Begin an operating system upgrade with a fresh set of batteries If the batteries in the HydroSense II fail during the update process corruption of the operating system can result Normally the batteries can be replaced and the update restarted In rare cases however this corruption will require factory repair Appendix A Configuration Menus A 1 Main Menu i TO DEFICIT MODE ELUETOOTH 0H 0FF TIME DATE DISPLAY SETTINGS GPS SYSTEM SETTINGS SELECT OK BACK y y To enter the main menu press MENU from the main screen p 13 Using the 45 i EAD l W buttons select the desired menu item and press OK To exit the menu press STORE A 2 Deficit Mode DEFICIT MODE OH DFF SAVE OK CAHCEL This menu selects whether or not soil deficit is displayed Select ON to show deficit resul
6. A 14 GPS Settings LOORDIHATE FORMAT SELECT OK BACK 9 This submenu contains a list of settings related to the GPS Using the 44 W er READ buttons highlight one of the options shown and press 0K to select that item Alternatively press STORE to exit the menu A 15 GPS Power OH DEF SAVE OK CANCEL 9 This menu controls power to the GPS module Switching off GPS will save power while the unit is awake and increase battery life however the time and date used by the HydroSense II may be less accurate and any stored data will not be geotagged for future display and charting Using the 44 buttons select a READ power state to use and press OK To exit the menu without saving press STORE A 16 Coordinate Format Doo DOD Dob MH S gt gt SAVE OK CAHCEL Latitude and longitude information can be displayed on the main screen p 13 in one of three formats DDD DDDD decimal degrees DDD MM MMMM degrees with decimal minutes DDD MM SS degrees minutes and seconds READ l Using the 44M W buttons select a format and press OK To exit the menu without saving press STORE Appendix A Configuration Menus A 17 System Settings 4 gt TEH SETTIHGS A TIME RESTORE SETTING SERIAL HUMEER SELECT OK BACK This submenu contains a list of system wide settings Using the W buttons me READ i highlight one of the options shown and press 0K Alternati
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8. Quickstart Measurements The HydroSense II presents two distinct data sets One data set includes volumetric water content expressed as percent and period us The second data set includes an estimate of relative water content relative to pre measured wet and dry references and water deficit Water deficit provides an estimate of applied water required in mm to return the soil to the wet water content By HS2 and HS2P default only water content data are displayed Using the configuration menu p A 1 water deficit data can be enabled to display side by side with water content data 6 3 Water Content Data NOTE Volumetric water content VWC and period PER data are retrieved from the sensor The HydroSense II sensor uses a proprietary technique to determine water content over widely varying soils while correcting for a range of bulk electrical conductivities Volumetric water content labelled VWC on the display and period labelled PER on the display data are requested from the sensor via SDI 12 serial protocol Soil consists of three main constituents mineral particles sand loam or clay water and air Air and water occupy the spaces or pores formed between the mineral particles In agricultural soils these pore spaces typically make up approximately 50 of the soil by volume with water and air together making up the remaining 50 As a result water content normally ranges from 0 to 50 I
9. 1 Measurement Principle 6 4 4 2 Rod Insertion The HydroSense II uses soil dielectric permittivity to estimate volumetric water content Dielectric permittivity of water is much greater than that of other soil constituents making possible the correlation of water content to measured dielectric permittivity Additionally water and air are the only soil constituents that change appreciably over biological time scales The electronics contained in the water content sensor generate the high frequency electromagnetic energy necessary to polarize water molecules such that their permittivity can be determined The energy passes along a waveguide formed by the two rods and reflects from the end of the rods and back into the sensor head where the reflected signal is detected and time of travel is measured The time of travel along the waveguide is predominantly dependent on the dielectric permittivity Since the measured time is the net result of passing down the length of the rods and back again it reflects an average of the water content over the volume of the waveguide The sensor electronics also detect electrical conductivity EC between the rods and use this to correct the permittivity measurement This allows the sensor to operate in a wider range of soil EC The calibration coefficients to convert measured time of travel to dielectric constant and water content are contained within the sensor head and are the intellectual property of Campbell Scien
10. 8 1 Storing Data NOTE 5 To store data with the HydroSense II press the STORE button from the main screen p 13 If the current location is not within an existing zone a prompt to create a new zone will be presented If a zone already exists data are attributed to that zone The STORE function stores volumetric water content values Make a 5 measurement before pressing the sTORE button 8 2 Whatis stored The flash file system holds the water content data file the zone table and the table of configuration settings The most important among these is the water content data file When the user stores a measurement by pressing STORE the most recent measurement of volumetric water content VWC is stored with the measured period sensor type current date and time and latitude and longitude 1f GPS synchronization has been achieved If the GPS is switched off or does not have a valid synchronization system time and date are used without GPS confirmation of their accuracy When the GPS is disabled check and adjust the system clock before storing data The water content data file is configured as ring memory and is large enough to hold over 1000 values When the file becomes full the oldest data are overwritten and storage continues The zone data file is configured as fill and stop memory It holds a list of zones that have been created Zones are created whenever a datum is stored in a new location Each zone record contains
11. Appendix A Configuration Menus 2 2220 22000 2000an0nnnnnnnnen A 1 AL A adeneatboonagahanices A 1 A AAA A A 1 AS A A A 1 Ade Time Date Menu reinigen A 2 AD A ste nesagauesosegebcneredentoconatennass A 2 AO Date Format dada A 2 fi Bellosta A 3 AS TIMeSynehronizaOi ssaa aaa A 4 AS Display SCUO S pensaa a na A 4 ALO SONAS E el A 4 AckE BUSES ansaa a a a A 5 AZ Backlight OM TIe ee A 5 PANG AA A AAA A 5 Add AGP SS CUI llana A 6 Ac ATP SUE AI A A AAA A 6 A16 Coordinate Fomat ah Area a e A Ea aeti A 6 AG DEOS NSS ada E A 7 Ads SySE Mon LINE aa E A 7 AGIO Restore Selinss aia ds A 7 A20 Serial Number ass esse A 8 Figures sl HS2 Hydrosense M Systeman a a ee l Zo HS2P Hydrosense I Pole System ea id l 4 1 HS2 Parts in Hard Carrying Case ea an a 5 4 2 HS2P Carrying Ton 5 45 HS2PPaisennseeetesen een 6 Tables 4 1 Comparison of HydroSense II and HydroSense 3 g2 Hydrosense TP 4 G21 Detault Soil Profiles ic ii 9 el follonica 14 HS2 and HS2P 1 Introduction a cane u TS Ss 0 al El ya J 4 OI D O e Figure 1 1 HS2 HydroSense II System Figure 1 2 HS2P HydroSense II Pole System The HydroSense II is an easy to use portable device for measuring volumetric water content of soil The major components of the system are the display the sensor and the software A sensor with 12 cm rods model CS659 or CS65
12. page will be shown with the reference value changed Repeat this process for the remaining wet or dry set point READ If desired the soil profile can be cleared by selecting GBSNNOUR then OK The CLEAR SOIL operation cannot be undone The sensor length stored in a soil profile is automatically updated to match the sensor used whenever the wet and dry reference values are changed If the sensor length used to change one of the references is different to that previously used for the soil profile the following screen will be shown 6 4 3 Storage User Manual SELECT PROBE SOIL 1 PROBE C5655 HEW PR EE 3659 12cm SELECT OK EXIT 9 Selecting will overwrite the soil profile clearing the other reference value whereas selecting will discard the measurement and leave the soil profile unchanged This feature forces both reference values to use the same rod length This step cannot be reversed Using W select the desired l READ 5 i option and press OK to accept or STORE to discard the new measurement and return to the soil profile screen Once the soil profile changes are complete use 4 W to choose ININIXGIMISIN READ SOJIB and press OK This will return to the main screen p 13 and use the new soil profile The HydroSense II does not store relative water content or deficit measurements to flash Only water content measurements are stored 6 4 4 Proper Measurement Technique and Limitations 6 4 4
13. 01 in the following Figure the zone name will be displayed 1 Wee PEE 1 000us C4658 Jim EA EAS A o Al This change occurs automatically when the HydroSense II detects that it is within the boundaries of a zone For more information on zones please see Section 9 2 Geotagging and Zones p 18 The upper left of the main screen p 13 shows a group of status icons They are detailed in Table 7 1 Status Icons Table 7 1 Status Icons GPS This icon is shown when the GPS has acquired synchronization with the GPS satellite constellation This icon disappears when the GPS is turned off or the GPS sync is lost Bluetooth connection This icon is displayed when a Bluetooth connection has been successfully established When the Bluetooth connection is closed this icon disappears 14 User Manual Bluetooth active This icon is shown whenever the Bluetooth radio is turned on and discoverable If the Bluetooth is turned off this icon disappears Battery This icon indicates the state of charge of the battery pack The icon changes from le which indicates the battery is fully charged to El when it 1s empty 7 3 3 Measurement Display AA EAS A o EA Ll The centre left of the screen contains the measurement results e VWC This section shows volumetric water content in percent This value is automatically compensated for varying soil conditions If the measurement is out of range the display wil
14. 1t on GPS synchronization will normally be achieved in approximately 30 seconds but may take up to a minute or more The HydroSense Il indicates that synchronization has been achieved by displaying the GPS sync icon F 2 on the main screen p 13 When the GPS is synchronized the internal clock of the HydroSense II is adjusted to match GPS time to within one millisecond GPS can be disabled using the configuration menus p A 1 9 2 Geotagging and Zones 18 When the GPS module is enabled the HydroSense II is able to store water content data tagged with position information latitude and longitude Using this position information data can be grouped by geographical location These geographical areas are referred to as zones and are characterized by a centre coordinate and radius Volumetric water content values are grouped filtered and charted by the computer software based on the zone in which the data was collected The HydroSense Il keeps a table of up to 100 GPS zones in memory and searches through this table every few seconds to determine if it is within the boundary of a zone When it has determined that the user is within a zone it displays the zone name on the main screen p 13 156 11 4811 2 10 0 1 000u5 C5653 20cm EA EAS A o Al Zones can be created when data are stored When the Store p 13 button is pressed and the HydroSense II determines that the current location 1s not in an existi
15. 30 is calculated as an RWC of 70 6 6 4 1 Soil Types User Manual An RWC value greater than 100 indicates that the soil has a water content value greater than the wet reference a negative value indicates that the water content 1s below the dry reference Water required in mm of applied water to return the soil to the wet reference is also calculated and reported as water deficit A negative deficit indicates that that the water content is greater than the wet reference for that soil type Since the sensors average water content along the length of the rods the sample volume difference between the 20 cm and 12 cm sensors 1s significant This difference affects the water deficit value Therefore the current measurement and reference values must be made with the same rod length The HydroSense Il needs three parameters to calculate relative water content and deficit e wet water content set point e dry water content set point e sensor length These parameters are soil specific and grouped as soil profiles The HydroSense II holds up to 10 soil profiles labelled SOIL 1 through SOIL 10 Some soil profiles are pre set to default values These values may be used or overwritten as desired but take care to record what soil type 1s used for each profile The default soil profiles are described in Table 6 1 Default Soil Profiles Table 6 1 Default Soil Profiles Rod Length Soil D
16. 9P and a sensor with 20 cm rods model CS658 or CS658P are available HS2 and HS2P 2 3 NOTE Campbell Scientific offers the HS2 the standard HydroSense II system and the HS2P a HydroSense II system with a strong handle and pole FIGURE 1 1 HS2 HydroSense II System p 1 shows the HS2 and FIGURE 1 2 HS2P HydroSense IT Pole System p 1 shows the HS2P Throughout the manual HydroSense Il refers to both the HS2 and HS2P unless specified otherwise Cautionary Statements Quickstart NOTE CAUTION e The connectors that connect the HydroSense II display to the sensor are a push pull type with locators to align the connectors DO NOT TWIST The connectors can be damaged if the user twists them or attempts to screw or unscrew them e Remove the AA batteries before putting the HydroSense II display into storage e Anunobstructed view of the sky may be required to achieve the most accurate global position data possible from the HydroSense II GPS e Sensor rods must be completely inserted into the soil before making a measurement 1 Remove the HS2 display or HS2P from the carry case 2 Remove the blue protective strip from the display window Steps 3 and 4 are for the HS2 only because the HS2P comes fully assembled If using an HS2P go directly to step 5 3 Remove the HS2 sensor from the carry case 4 Connect the HS2 sensor to the display by mating the connector on the cable to the connector at the b
17. LCD Firmware updates User updateable Factory only Portable Yes Yes Battery life 1000 readings 2000 readings Unlike the HydroSense I the 12 cm and 20 cm rods of the HydroSense II are not interchangeable The HydroSense II can display relative water content RWC based on wet and dry references set by the user The unit also displays water deficit which indicates how much water is required in mm of applied water to return the soil to the previously saved wet reference Measurements are made by fully inserting the sensor rods into the soil and pressing nok The process takes 2 to 3 seconds The measurement can be stored and later downloaded to a computer for display and analysis Communications between the computer and HydroSense II are via Bluetooth p 17 The HydroSense II includes a GPS Global Positioning System p 17 receiver that enables data to be stored with position information geotagged p 18 The HydroSense II has these default power saving features e turns off when idle for a configurable period e adjustable backlight brightness and on time e backlight automatically disabled in bright conditions e GPS and Bluetooth can each be forced off The HydroSense II system consists of the items listed in Table 4 2 HydroSense II Parts These parts are shown in FIGURE 4 1 HS2 Parts in Hard Carrying Case FIGURE 4 2 HS2P Carrying Tote and FIGURE 4 3 HS2P Parts Table 4 2 HydroSense II Parts Qty HS2
18. Part HS2P Part a HydroSense II measurement and display unit HS2P Insertion Pole Assembly pn 29153 1 CS658 20 cm or CS659 CS658P 20 cm or CS659P 12 cm water content sensor 12 cm water content sensor AA batteries factory installed inside the display HS2 Display User Manual Spare battery holder pn 28404 spare batteries not included Wrench pn 26156 for installing replacing rods Loctite thread locking compound pn 13665 for rod replacement Phillips screwdriver pn 6290 Hard carrying case pn Carrying tote pn 29468 or 27789 hard carrying case pn 27789 HydroSense II Support Software HydroSoft on CD Screwdriver Loctite Spare Battery Holder Figure 4 1 HS2 Parts in Hard Carrying Case Figure 4 2 HS2P Carrying Tote HS2 and HS2P HS2P Pole y t Wrench a Figure 4 3 HS2P Parts Loctite HydroSoft CD CS659P Spare Battery Holder Below are spare and supporting parts available from Campbell Scientific e Spare 20 cm rods pn 26483 for the CS658 or CS658P sensor e Spare 12 cm rods pn 10184 for the CS659 or CS659P sensor e USB Bluetooth adapter for supporting PCs pn 28411 5 Specifications 9 1 Display Specifications GPS Accuracy Data storage Zone storage Display Backlight Compatibility Weight Dimensions Source Battery life 5 1 1 Current Drain Asleep Backlight off Backlight 60 Back
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20. coating may affect measurements The small tube of Loctite 222MS Threadlocker that is shipped with the HydroSense Il is enough to treat several sets of rods 5 Use the wrench pn 26156 to screw in the rods Full contact between the rod s nut and sensor body is required for proper operation Do not over tighten the rods This can damage the threaded inserts of the sensor head permanently damaging the sensor 6 If using the HS2P put on the plastic bumper 7 Wait 3 to 12 hours before using the HydroSense II to allow the thread locking compound to cure The required curing time depends on temperature Allowing the threading compound to cure prevents loosening of the rods 23 HS2 and HS2P 24 11 4 Replacing an HS2P Sensor CAUTION HS2P Pole Sensor ee ee E en et N Tab Nut Bumper Hex Bolt in Unplug the cable that attaches the sensor to the display 2 Remove the plastic bumper 3 Use the wrench to remove the hex bolts and nuts that secure the sensor to the pole 4 Use Phillips screwdriver to remove the screws and tabs that fasten the cable to the pole 5 Remove the old sensor 6 Place the new sensor in the slots at the bottom of the pole 7 Secure the sensor to the pole using the hex bolts and nuts Do not over tighten the hex bolts 8 Put on the plastic bumper 9 Secure the sensor cable to the pole using the Phillips screws and tabs 10 Connect the cable to the display
21. d be straightened or replaced as soon as possible since non parallel rods can introduce error and lead to more serious bending or breaking Small bends can often be straightened by hand but more serious bends may require rod replacement Spare rods can be purchased from Campbell Scientific e Spare 20 cm rods pn 26483 for the CS658or CS658P sensor e Spare 12 cm rods pn 10184 for the CS659 or CS659P sensor Unlike the original HydroSense the HydroSense II sensors do not support interchangeable rods The CS658 and CS658P will only measure accurately with 20 cm rods and the CS659 and CS659P will only measure accurately with 12 cm rods Threads have been mismatched intentionally to ensure that rods are not inadvertently mixed up Please do not attempt to change rod sizes The rods have a hexagonal nut collar When threaded into the sensor body this collar distributes lateral forces over a relatively large area to reduce rod deformation CAUTION CAUTION User Manual The procedure for replacing the rods is as follows 1 Ifusing the HS2P slip off the plastic bumper Bumper Sensor Head ur Rod e Wrench 2 Use the wrench pn 26156 to unscrew the rods 3 Ensure that the threads of the replacement rods and the sensor body are clean and free from damage 4 Apply thread locking compound pn 13665 on the threads of the replacement rods Use the thread locking compound sparingly A thick
22. escription 6 ie osu 2em CAT 6 4 2 Configuring Soil Profiles 18 11 2811 ZOHE SAAB PUC SOIL 1 10 0 PUC 37 57 PEF 0009 DEF 2mm 4653 20cm Lt13 5 6685 A AS When Deficit Mode is enabled Section 7 3 4 Deficit Display p 15 soil profiles are accessed from the main screen p 13 of the HydroSense II To select the current soil profile SOIL 1 in the preceding Figure press the gt button The READ soil profile number will be highlighted To open the soil profile list press OK HS2 and HS2P 10 NOTE SOIL TIPE SOIL SOIL SOIL 4 SOIL E SOIL E SELECT OE CAHCEL 9 The soil profile list should be displayed Use 44 W to move through the list to i READ the desired soil profile and press OK SOIL 1 SEES 20m DPI KWC Pee WET Vue 15 67 CLEAR SOIL SELECT THIS 0 IL SELECT OK EXIT 9 A soil profile page will be displayed This page shows the reference values stored for this soil profile and the rod length used To select this soil profile to apply to the current measurement press to READ highlight UAEM SINO and press OK New reference values can be set from the soil profile screen To do so correctly insert the sensor in the reference soil and select WET VWC or DRY VWC READ and press OK OPS LLE MEASURING The screen will show MEASURING while the measurement is taken After 3 to 4 seconds the soil profile
23. ing soil rods and put it back on when done READ l 8 To take a measurement press OK When the hourglass icon 3 in the lower right of the screen 1s extinguished the measured VWC and period are shown on the screen gt 9 Press STORE to store the measurement Assuming the GPS is in sync follow the prompts to create a zone 10 Data are now stored in memory To retrieve data first establish a Bluetooth link with your PC and then collect data using the HydroSense II support software See Section 8 4 Connecting via Bluetooth p 17 and Section 8 5 Collecting Data p 17 The HydroSense Il is a portable system for measuring volumetric water content of soil It is an improved successor to the HydroSense Table 4 1 Comparison of HydroSense II and HydroSense I compares features of the HydroSense II and HydroSense 1 Table 4 1 Comparison of HydroSense II and HydroSense I HydroSense II HydroSense I Volumetric water Yes period as us Yes period as ms content and period Relative water content Yes 10 profiles Yes 5 sites amp water deficit with wet and dry references Sensor rod length 20 cm and 12 cm 20 cm and 12 cm NOT interchangeable interchangeable Accuracy 20 cm rods 3 3 VWC EC lt 4 dS m EC lt 2 dS m 12 cm rods 3 EC lt 6 5 dS m HS2 and HS2P NOTE Date and time Yes with GPS accuracy No when available Display 128 x 64 pixel graphic 2 line x 16 char LCD alphanumeric
24. l show in this position e PER The average period measured expressed in microseconds Under the sensor readings are displayed model number and rod length of the sensor used in this case CS658 20cm This is updated with each measurement If the water content sensor is not properly connected or is malfunctioning the display will show SENSOR TIMEOUT HOT TH A ZUHE se la le PER 7 3 4 Deficit Display When deficit mode is enabled the water deficit section is displayed at centre right of the main screen p 13 The following image shows the main screen without deficit mode enabled 14 11 2011 Tey 20HE Baal o E de 2 10 0 1 000u5 C5653 20cm LTS 18 668 A EA 15 HS2 and HS2P 8 16 The following image shows the main screen with deficit mode enabled SB BS 2811 ZOHE Bee 2395 PER 1 dus C4658 Dcm Full 35 87 DEF 13 5mm The water deficit section of the display contains the following information e SOIL soil profile number Range 1 to 10 e RWC relative water content Range 0 to 100 where 0 represents dry wilting point and 100 is wet field capacity e DEF water deficit expressed in millimetres mm Data Storage and Retrieval The HydroSense Il includes non volatile flash memory for storage of data and configuration settings Flash memory is preserved when the batteries are exhausted or changed
25. light 100 GPS active Bluetooth active 5 m 16 4 ft typical 1 ms time with GPS sync gt 1000 records ring memory gt 100 records fill and stop 128 x 64 pixel graphic LCD blue white LED brightness adjustable Bluetooth to 10 m Google Earth via software 0 34 kg 0 75 1b 200 x 100 x 58 mm 7 9 x 3 9 x 2 3 1n 4 x AA alkaline batteries 6 to 12 months depends on usage and battery quality 20 uA 2mA 18 mA 30 mA 35 mA 30 mA 5 2 Sensors Specifications 5 2 1 Volumetric Water Content Measurement 9 2 2 9 3 9 3 1 9 3 2 Measurement principle Measurement range Precision Accuracy Physical Weight Sensor body dimensions LxWxH Rod length Rod diameter HS2P Pole Assembly Handle width Pole width Pole depth Height Handle to bottom of sensor Top of display to bottom of sensor Weight With display and sensor Without display Operation 6 1 6 2 Assembly and First Use User Manual time domain reflectometry 0 50 lt 0 05 3 VWC in mineral soils with solution EC lt 4 0 dS m 20 cm rods with solution EC lt 6 5 dS m 12 cm rods 0 45 kg 0 99 Ib 100 x 92 x 40 mm 3 9 x 3 6 x 1 6 in 20 cm and 12 cm rods not interchangeable 4 7 mm nominal 29 2 cm 11 5 in 2 5 cm 1 in 2 5 cm 1 in 82 3 cm 32 4 in 96 5 cm 38 in 1 4 kg 3 Ib 1 1 kg 2 4 lb This information is provided in Section 3
26. ment cccooccccnnnnnncncnnnnnnnnnnnnnos 7 9 22 PAYSEC a 7 5 3 WS2ZP Pole Assembly cial 7 A 7 IS WE ia 7 6 OPEN roda ios 7 6 1 Assembly and First Use 7 62 Measurement ornella 7 63 Water Content ata Nee aa 8 64 Water Delich Data rendidos 8 A A I 9 6 42 Conlisunne SollPronles as adi 9 A ies een 11 6 4 4 Proper Measurement Technique and Limitations 11 644 1 Measurement Principle id dai 11 A LA ce vvcaseats 11 6 4 4 3 Soil Factors Affecting Measurement 12 6 4 4 4 Measurements in Special Materials 12 Ts USOF INTO MAC pisada 12 7 1 BUON ee ato 13 22 MS PIAS Screens io 13 gt A A N a 13 TOM GPS Iniommalon erleiden 13 732 Stalusimiormationia sita 14 733 Measurement Display aaa 15 1 34 Debbie iaia 15 8 Data Storage and Retrieval 16 8 1 SONNE Data ee revere ei et ert nee Tee Te 16 2 WHat IS stored staatl 16 S See 17 84 Connecting via Bluetooth esane e 17 S5 Collecune Dalai 17 9 1 GPS S YMC HLONIZAUON ara 17 92 Good SM and Zone aaa 18 10 TrOUBleSNOO UNO asirio 19 Tia Maintenance ai 20 ELE Batterie sen lla 20 11 1 1 Replacing the Battery Pack ciro u 20 11 2 Removing Display from HS2P Pole een 21 13 Rod Replacement concisa 22 11 4 Replacing an HS2P Sensor iia 24 11 5 Operating System Updates iii i 24
27. n some conditions the sensor is unable to determine the soil water content In these cases an out of range symbol is displayed Even when the sensor cannot determine the VWC the signal period measurement will always be displayed In special media this value can often be used with a soil specific calibration to estimate water content 6 4 Water Deficit Data Water deficit data help irrigators with water management decisions By default the HydroSense II does not show water deficit data on the display screen To enable the water deficit data display turn on Deficit Mode in the configuration menus p A 1 In water deficit mode wet and dry references can be stored for up to ten soils The current measurement is compared to those reference values and relative water content RWC is calculated on a scale from 0 dry to 100 wet While any two volumetric water content measurements can be stored as wet and dry references the normal procedure is to store the wilting point as the dry value and field capacity as wet The relative water content is calculated as VWC VWC RWC _ _ x 100 VWC VWC dry where VWC the current measurement VWCary the dry reference VWCwe the wet reference For example a particular clay loam soil may reach wilting point at 18 and field capacity at 35 With these references a VWC measurement of 24 5 will display as a relative water content of 38 2 A VWC of
28. ng zone CREATE A NEW ZONE is displayed 20HE HOT FOUND CREATE A HEW 40HE YES OK Ho 5 READ o To create a new zone select YES and press OK To exit without storing press 5 STORE When a new zone is created the following screen is displayed User Manual nd nm 3 CREATE OF CANCEL 3 READ Use the W buttons to select the radius to use for this zone and press 0K to gt save the new zone details Press STORE to return to the main screen p 13 without creating a new zone and without storing data Once a zone is created the water content data will be stored By default the zone name will be in the form Zone xxxxx where xxxxx 1s a number that automatically increases each time a new zone is created Zones can be renamed and updated using HydroSense II Support Software gt If the STORE button 1s pressed when the GPS does not have a valid GPS sync a warning message 1s display HO GPS LOCK STORE ANTWAT 7 YES OK Ho This message warns that the current measurement may not be stored with an accurate date or time To continue and store data without GPS information press READ f OK To return to the main screen p 13 without storing press STORE 10 Troubleshooting Display shows SENSOR This message indicates that the HydroSense II TIMEOUT display has not received a response from the continuously sensor Check that the connectors are mated correctly the pin
29. nuals Part numbers prefixed with a symbol are special order parts for use with non EU variants or for special installations Please quote the full part number with the when ordering Recycling information At the end of this product s life it should not be put in commercial or domestic refuse but sent for recycling Any batteries contained within the product or used during the products life should be removed from the product and also be sent to an appropriate recycling facility Campbell Scientific Ltd can advise on the recycling of the equipment and in some cases Ei arrange collection and the correct disposal of it although charges may apply for some items or territories For further advice or support please contact Campbell Scientific Ltd or your local agent E CAMPBELL SJ SCIENTIFIC Campbell Scientific Ltd Campbell Park 80 Hathern Road Shepshed Loughborough LE12 9GX UK Tel 44 0 1509 601141 Fax 44 0 1509 601091 Email support campbellsci co uk www campbellsci co uk Contents PDF viewers These page numbers refer to the printed version of this document Use the PDF reader bookmarks tab for links to specific sections Ts IMPROGUCHION si 1 2 Cautionary Statement ccccssecsseseseeeeeeeeneeeees 2 di QUICK A o 2 d OV GR VIC WW ai 3 D SPCCIICAUONS iniciara 6 Sil Display Speciicauons zer 6 Solel Cuen Drain id 6 I2 SENSON PEC CO au 7 5 2 1 Volumetric Water Content Measure
30. ottom of the display DO NOT TWIST the connectors The connector is a push pull type with locators to align the connectors The connectors can be damaged if the user attempts to screw or unscrew them To mate the connectors simply bring them together and turn until they are aligned then applying firm pressure slide them together until they click To disconnect pull back on the connector collar with the thumb and forefinger and pull the two connectors apart U 5 Turn on the HydroSense II by holding the MENU button for 3 seconds 6 Establishing a GPS sync may take up to one minute or more When the GPS icon is displayed synchronization has been successful Measurements with GPS data can now be taken See Appendix A 14 GPS Settings p A 6 for information on toggling the GPS 4 NOTE NOTE Overview User Manual The HydroSense II stores positional information when available time and date with measurements To reliably take advantage of the GPS use the HydroSense II outdoors with a clear view of the sky Measurements can be made and data stored without a GPS p 17 signal however the HydroSense I Support Software HydroSoft will be unable to later group and display data geographically 7 Insert the sensor rods fully into the soil The HS2P uses a plastic bumper that covers the rod mounting nuts Insert the rods into the soil up to the plastic bumper Only remove the plastic bumper when replac
31. p Moves the cursor up IC Down Moves the cursor down a Left Moves the cursor to the left a Right Moves the cursor to the right 7 2 Splash Screen y To turn the HydroSense II on press and hold MENU for 3 seconds The following splash screen is displayed CAMPEELL SCIENTIFIC HydroSense II The operating system version number and device serial number are displayed The splash screen is shown for 2 5 seconds 7 3 MainScreen After the splash screen the main screen is shown The main screen contains a number of different elements which are explained in the following subsections 7 3 1 GPS Information 1811 2811 22 10 0 1 000u5 5652 20cm LTS 15 888 Lnl46745 BARE 13 HS2 and HS2P The top bar of the screen displays the current date and time information This time is synchronized with the GPS when available The bottom bar shows the current GPS coordinates Both values are updated automatically HOT IH A Z0HE su ln FUC 000 Pee Oleus If the GPS is turned off using the configuration menu p A 1 AMO da is displayed at the bottom 7 3 2 Status Information The zone name is shown in the upper left of the screen 147117201 2 10 0 E 1 000u5 C5653 20cm EA EAS Loidetdo eee When the current position is not within an existing zone NOT IN A ZONE is displayed When the HydroSense II is moved within the boundaries of an existing zone such as ZONE 000
32. pen the HydroSense II will not shut down Turn off the HydroSense or disable the Bluetooth once data have been collected or settings have been updated to avoid early depletion of the batteries 8 5 Collecting Data GPS Before collecting data establish a Bluetooth connection Section 8 4 Connecting via Bluetooth p 17 Data are downloaded to the computer by clicking the Synchronise button in HydroSense II Support Software The synchronization process downloads new water content data and updates the zone table and configuration settings For more information please refer to the HydroSense II Support Software user guide The HydroSense II incorporates a receiver for the Global Positioning System GPS To calculate position the GPS module must receive radio time signals from at least four satellites simultaneously If the receiver detects signals from more than four satellites it will use the additional data to determine a more accurate position 9 1 GPS Synchronization The GPS receiver needs a clear view of the sky to reliably calculate position When the receiver resolves the current position it has achieved synchronization The GPS antenna is located inside the display above the LCD The antenna faces toward the sky when the display is held upright in a comfortable reading position 17 HS2 and HS2P To synchronize the GPS take the HydroSense II outside away from tall buildings or large obstructions and turn
33. r rods and can be used as a relative value to measure changes in the material of interest Period generally increases proportionally with water content For actual water content values a soil specific calibration can be performed using an independent measure of water content such as gravimetric analysis A calibration equation can then be derived to relate period to water content 7 User Interface 12 The following section contains a detailed description of the HydroSense II user interface Screenshots included in this section were captured using factory default settings except where noted however they may not reflect the exact image seen on your screen because of configuration settings chosen or operating system updates Red highlights on the images mark areas of interest The highlights are added for illustrative purposes and are not present on the screen of an actual display User Manual 7 1 Buttons User Interface Buttons Power MENU To turn the HydroSense II on or off press and hold this button for 3 seconds When pressed for less than 3 seconds in the main screen p 13 the main menu p A 1 will be displayed READ OK Triggers a new measurement in the main screen p 13 Also used to select an item in a list or to answer OK to prompts Back STORE From the main screen p 13 used to store the current reading to flash memory In the menu system used to move Back to the previous menu A U
34. s are clean and the connector has not been damaged If this problem persists please contact Campbell Scientific Display shows NO GPS This warning indicates that the GPS has not LOCK STORE achieved synchronization with the GPS satellite ANYWAY when network This may occur because the GPS has attempting to store data been turned off does not have a clear view of the sky or simply has not been turned on long enough to achieve synchronization If selecting OK in response to this query data will be stored without positional information and the date and time information may be inaccurate 19 HS2 and HS2P The volumetric water indicates that the water content sensor was content is reported as unable to determine the volumetric water content for these soil conditions Try taking the measurement a few more times or try another location close by For extreme or special soils period can sometimes be used in conjunction with a soil specific calibration to yield usable results The main screen shows This indicates that the GPS is turned off Please GPS off in the bottom refer to Appendix A 14 GPS Settings p A 6 to bar find the GPS power control On the display of my The forth icon is the Bluetooth connection icon HydroSense Il the It appears only when the HydroSense II is paired battery icon the to a computer and there is an active data Bluetooth icon and the connection between them This happens
35. se with the Phillips screwdriver provided in the carry case 4 Carefully separate the back cover from the front cover taking care to keep the display face down if the unit is turned face up the battery holder inside may fall out and damage the battery wires 5 Unclip the battery connector from the battery holder User Manual CAUTION Although this connector looks similar to the terminals of a 9 V PP3 battery it is not compatible with the 9 V battery Do not connect a 9 Vdc battery to the terminals because it can permanently damage the HydroSense Il This damage is not covered under the warranty 6 Connect the spare battery holder to the battery connector 7 Carefully replace the back cover of the display and replace the four screws u 8 Turn over the display and hold the MENU button for 3 seconds to activate 9 If using the HS2P reinstall the display onto the pole 11 2 Removing Display from HS2P Pole 1 Disconnect the sensor cable at the bottom of the display 2 Squeeze the clip to release the display from its holder 21 HS2 and HS2P 22 3 Lift the display from its holder 11 3 Rod Replacement NOTE Threaded inserts in the epoxy body of the sensors allow user replacement of the stainless steel rods Initially these rods are fitted at the factory and with normal use should provide years of trouble free service Insertion into rocky soils can lead to bending of the rods Bent rods shoul
36. the centre position latitude and longitude radius in metres and the zone name The zone file is large enough to hold over 100 zones When the zone data file is full a new zone cannot be created until an old zone is removed 9 8 3 Software User Manual The configuration settings file is managed automatically These settings are synchronized to the computer where they can be viewed modified backed up and restored For more information please refer to the HydroSense II Support Software user guide The HydroSense II ships with the latest version of the HydroSense II Support Software on CD For the latest version please contact Campbell Scientific For a complete guide to the use of this software please refer to the HydroSense II Support Software user guide 8 4 Connecting via Bluetooth Steps to achieve a Bluetooth connection e Start HydroSense II Support Software y e Turn on the HydroSense II display by holding the MENU button for 3 seconds e In HydroSense II Support Software click the Discover button to find Bluetooth devices within range e When the HydroSense II unit is discovered click the Connect button The first time the HydroSense II unit is used with a new computer the computer and HydroSense II must be paired before a connection can be made The pairing code is 1234 For more information please refer to the HydroSense II Support Software user guide While a Bluetooth connection is o
37. tific For accurate repeatable measurements the rods of the sensor must be fully inserted into the soil Since the water content is averaged over the length of the rods the reading from a 20 cm sensor inserted vertically will be the average of the soil moisture over the top 20 cm however the same rods inserted at 45 will yield an average of the top 14 cm This is often used for shallow rooted crops such as turf to measure the average water content in the root zone of the plant Inserting the rods completely at an angle often requires more attention during the insertion action 11 HS2 and HS2P The measurement volume of a sensor varies somewhat with soil type As a guide volume extends along the full length of the rods and outward radially from each rod a distance of approximately 3 cm Soil is not homogeneous Cracks rocks pore size plant roots and texture layers are not usually distributed uniformly throughout a measured profile If the water content over a large area such as a cropped field 1s to be determined several measurements may be required to establish a representative measurement 6 4 4 3 Soil Factors Affecting Measurement The HydroSense II is predominantly sensitive to dielectric permittivity and therefore soil water content see Section 6 4 4 1 Measurement Principle p 11 Other physical properties of the soil can affect the measurement If the soil contains a large clay fraction or has high electrical conduc
38. tific warrants that the installation media on which the software is recorded and the documentation provided with it are free from physical defects in materials and workmanship under normal use The warranty does not cover any installation media that has been damaged lost or abused You are urged to make a backup copy as set forth above to protect your investment Damaged or lost media is the sole responsibility of the licensee and will not be replaced by Campbell Scientific Campbell Scientific warrants that the software itself will perform substantially in accordance with the specifications set forth in the instruction manual when properly installed and used in a manner consistent with the published recommendations including recommended system requirements Campbell Scientific does not warrant that the software will meet licensee s requirements for use or that the software or documentation are error free or that the operation of the software will be uninterrupted Campbell Scientific will either replace or correct any software that does not perform substantially according to the specifications set forth in the instruction manual with a corrected copy of the software or corrective code In the case of significant error in the installation media or documentation Campbell Scientific will correct errors without charge by providing new media addenda or substitute pages If Campbell Scientific is unable to replace defective media or documenta
39. tion or if it is unable to provide corrected software or corrected documentation within a reasonable time it will either replace the software with a functionally similar program or refund the purchase price paid for the software All warranties of merchantability and fitness for a particular purpose are disclaimed and excluded Campbell Scientific shall not in any case be liable for special incidental consequential indirect or other similar damages even if Campbell Scientific has been advised of the possibility of such damages Campbell Scientific is not responsible for any costs incurred as a result of lost profits or revenue loss of use of the software loss of data cost of re creating lost data the cost of any substitute program telecommunication access costs claims by any party other than licensee or for other similar costs This warranty does not cover any software that has been altered or changed in any way by anyone other than Campbell Scientific Campbell Scientific is not responsible for problems caused by computer hardware computer operating systems or the use of Campbell Scientific s software with non Campbell Scientific software Licensee s sole and exclusive remedy is set forth in this limited warranty Campbell Scientific s aggregate liability arising from or relating to this agreement or the software or documentation regardless of the form of action e g contract tort computer malpractice fraud and or other
40. tivity EC the applied signal can be attenuated sufficiently to affect detection of the reflected signal in the sensor electronics A very high organic matter fraction has a similar effect The HydroSense II will still respond to changes in water content in these atypical soils but its response will deviate from that of soils wherein the attenuation factors are present in small non interfering amounts The calibration coefficients fixed in the HydroSense II sensor were determined in laboratory studies on typical soils When measuring atypical soils user determined coefficients can often be applied to the measured period value Rocky soils can make rod insertion difficult and introduce variability in water content measurements taken in the same general area Rocks occupy space otherwise occupied by the fine soil fraction but they do not hold water in the same manner as soil If two proximal measurements are made in rocky soil the measured water content can differ significantly if large quantities of rock occupy part of the sensitive volume of one measurement but not the other 6 4 4 4 Measurements in Special Materials The HydroSense II was designed for use in agricultural soils but the measurement technique underlying the instrument supports other potential applications Other porous media can be monitored using the period value shown on the display The period is strongly related to dielectric permittivity of the material surrounding the senso
41. ts and OFF to hide them To quit this menu without saving the changes press STORE A 3 Bluetooth Power ELUETOOTH POWER DFF SAVE OK CAHCEL 9 This menu controls power to the Bluetooth module Switching off Bluetooth will save power while the unit is awake and increase battery life Bluetooth will need to be re enabled to collect data with a computer Using the 44 W buttons READ 1 select the power state to use and press 0K To exit the menu without saving press STORE Appendix A Configuration Menus A 4 Time Date Menu A 5 Time Set TIME DATE SET TIHEDATE DATE FORMAT TIME 2ZOHE TIME 3HL SELECT Ok BACK 9 This submenu contains a list of settings to configure the clock system of the HydroSense II Using the 44 buttons highlight one of the options and press READ 5 na OK Alternatively press STORE to quit this menu SET TIME DATE FORMAT DOW day fel Be az A 7 BS ZAII CHOOSE ADJUST SAVE OK CAHCEL 9 The HydroSense II clock is normally set automatically at GPS sync This menu is used to set the HydroSense II clock if GPS is not used The lt gt buttons can be used to move between the different parts of time and date while the N Wy buttons adjust each individual part of the time and date At the top of the screen the date format is displayed for reference To save the adjusted time to the clock READ oo press 0K To exit without saving press STORE
42. vely press STORE to exit the menu A 18 System on Time J TEM OW TIME e MINUTES SAVE OK CAHCEL 9 To save power the HydroSense II will automatically power off after a period of inactivity This menu allows configuration of this time period Press the READ a lt gt buttons to choose a timeout period and press OK Pressing STORE will exit without saving If the system on time is set to Always on the HydroSense II will only turn off W aor when the MENU button is used This will increase the average power consumption significantly If the device is left running by accident the batteries are likely to be exhausted in just a few days A 19 Restore Settings RESTORE SETTIHGS ARE TOU SURE TOU WISH TO RESTORE FACTORY DEFAULTS SELECT OK BACK READ This menu restores the HydroSense II to its factory defaults Press 0K to overwrite all configuration settings with default values or STORE to exit without changing settings This step cannot be undone If the unit is inadvertently set to factory defaults all settings will need to be restored manually through the previous menus Appendix A Configuration Menus A 20 Serial Number SERIAL _HUMEER SH 27381 EACE y This screen displays the serial number of the HydroSense II This should match gt uu the serial number labelled on the front panel of the unit Press STORE to exit this screen CAMPBELL SCIENTIFIC COMPANIES
43. when GPS icon are visible but collecting data or changing configuration a forth icon appears to be settings Generally when using the computer to missing collect data from the HydroSense II focus is on the computer screen and not the HydroSense II display so this icon may not be noticed 11 Maintenance 20 11 1 Batteries The HydroSense II is powered by four AA alkaline batteries Use a high quality battery for best operation Battery brands considered adequate for the power requirements of the HydroSense II include inclusively Energizer Duracell and Panasonic Under normal use the life of high quality batteries should be close to a year Replace the batteries when the voltage is less than 4 V The battery indicator icon on the main screen p 13 gives a warning of the battery status When the indicator shows the batteries are near empty El have replacement batteries available The HydroSense II carry case has a spare battery pack holder only batteries not included Configuration settings stored data and zones are stored in flash memory such that they will be preserved during battery replacement 11 1 1 Replacing the Battery Pack The process to replace the battery pack 1s 1 If using the HS2P follow the procedure provided in Section 11 2 Removing Display from HS2P Pole 2 Place the display face down on a clean dry surface 3 Remove the four 4 Phillips screws on the back of the displays ca
44. wise is limited to the purchase price paid by the licensee PLEASE READ FIRST About this manual Please note that this manual was originally produced by Campbell Scientific Inc primarily for the North American market Some spellings weights and measures may reflect this origin Some useful conversion factors Area 1 in square inch 645 mm Mass l oz ounce 28 35 g 1 lb pound weight 0 454 kg Length 1 in inch 25 4 mm 1 ft foot 304 8 mm Pressure 1 psi 1b in 68 95 mb 1 yard 0 914 m 1 mile 1 609 km Volume 1 UK pint 568 3 ml 1 UK gallon 4 546 litres 1 US gallon 3 785 litres In addition while most of the information in the manual is correct for all countries certain information is specific to the North American market and so may not be applicable to European users Differences include the U S standard external power supply details where some information for example the AC transformer input voltage will not be applicable for British European use Please note however that when a power supply adapter is ordered it will be suitable for use in your country Reference to some radio transmitters digital cell phones and aerials may also not be applicable according to your locality Some brackets shields and enclosure options including wiring are not sold as standard items in the European market in some cases alternatives are offered Details of the alternatives will be covered in separate ma
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