INSTRUCTION MANUAL HS2 and HS2P (HydroSense II) Revision: 3/14 C o p y r i g h t © 2 0 1 1 - 2 0 1 4 C a m p b e l l S c i e n t i f i c , I n c .
Warranty “PRODUCTS MANUFACTURED BY CAMPBELL SCIENTIFIC, INC. are warranted by Campbell Scientific, Inc. (“Campbell”) to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless otherwise specified in the corresponding Campbell pricelist or product manual. Products not manufactured, but that are re-sold by Campbell, are warranted only to the limits extended by the original manufacturer.
Assistance Products may not be returned without prior authorization. The following contact information is for US and international customers residing in countries served by Campbell Scientific, Inc. directly. Affiliate companies handle repairs for customers within their territories. Please visit www.campbellsci.com to determine which Campbell Scientific company serves your country. To obtain a Returned Materials Authorization (RMA), contact CAMPBELL SCIENTIFIC, INC., phone (435) 227-9000.
Table of 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. 1. Introduction ................................................................. 1 2. Cautionary Statements ............................................... 2 3. Quickstart .................................................................... 2 4. Overview ...................................................................... 3 5. Specifications ..
Table of Contents 8.2 8.3 8.4 8.5 What is stored? .................................................................................. 18 Software ............................................................................................ 18 Connecting via Bluetooth .................................................................. 18 Collecting Data .................................................................................. 19 9. GPS .................................................................
Table of Contents Tables 4-1. 4-2. 6-1. 7-1. Comparison of HydroSense II and HydroSense(I) ............................... 3 HydroSense II Parts.............................................................................. 5 Default Soil Profiles ........................................................................... 10 Status Icons ........................................................................................
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HS2 and HS2P 1. Introduction FIGURE 1-1. HS2 HydroSense II System FIGURE 1-2.
HS2 and HS2P 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 CS659P) and a sensor with 20 cm rods (model CS658 or CS658P) are available. 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.
HS2 and HS2P NOTE 5. Turn on the HydroSense II by holding the 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. The HydroSense II stores positional information (when available), time, and date with measurements.
HS2 and HS2P Sensor rod length 20 cm and 12 cm (NOT interchangeable) 20 cm and 12 cm (interchangeable) Accuracy 20 cm rods: ±3% (EC ≤ 4 dS/m) ±3% VWC (EC < 2 dS/m) 12 cm rods: ±3% (EC≤ 6.
HS2 and HS2P 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.
HS2 and HS2P FIGURE 4-2. HS2P Carrying Tote HydroSoft CD HS2P Pole CS659P Display Wrench Spare Battery Holder Loctite FIGURE 4-3. HS2P Parts Below are spare and supporting parts available from Campbell Scientific: • • • 5. Specifications 5.1 6 Spare 20 cm rods (pn 26483) for the CS658 or CS658P sensor Spare 12 cm rods (pn 10184) for the CS659 or CS659P sensor USB Bluetooth adapter for supporting PCs (pn 28411). Display Specifications GPS Accuracy: ±5 m (16.
HS2 and HS2P Dimensions: 200 x 100 x 58 mm (7.9 x 3.9 x 2.3 in) Source: 4 x AA alkaline batteries Battery life: 6 to 12 months (depends on usage and battery quality) 5.1.1 Current Drain 5.2 Asleep: 20 μA Backlight off: 2 mA Backlight 60%: 18 mA Backlight 100%: 30 mA GPS active: 35 mA Bluetooth active: 30 mA Sensors Specifications 5.2.1 Volumetric Water Content Measurement Measurement principle: time domain reflectometry Measurement range: 0% – 50% Precision: <0.
HS2 and HS2P 5.3.1 Height Handle to bottom of sensor: 82.3 cm (32.4 in) Top of display to bottom of sensor: 96.5 cm (38 in) With display and sensor: 1.4 kg (3 lb) Without display: 1.1 kg (2.4 lb) 5.3.2 Weight 6. Operation 6.1 Assembly and First Use This information is provided in Section 3, Quickstart. 6.2 Measurements The HydroSense II presents two distinct data sets. One data set includes volumetric water content expressed as percent (%) and period (μs).
HS2 and HS2P 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.
HS2 and HS2P These parameters are soil specific and grouped as “soil profiles”. The HydroSense II holds up to 10 soil profiles labeled “SOIL 1” through “SOIL 10”. Some soil profiles are preset to default values. These values may be used or overwritten as desired, but take care to record what soil type is used for each profile. The default soil profiles are described in TABLE 6-1, Default Soil Profiles. TABLE 6-1.
HS2 and HS2P 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 highlight SELECT THIS SOIL and press to . 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” and press . The screen will show MEASURING… while the measurement is taken.
HS2 and HS2P Selecting NEW PROBE will overwrite the soil profile, clearing the other reference value, whereas selecting OLD PROBE 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 , select the desired option and press to accept or measurement and return to the soil profile screen.
HS2 and HS2P 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 is 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.
HS2 and HS2P 7.1 Buttons User Interface Buttons Button Function 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. 14), the main menu (p. A-1) will be displayed. READ/OK — Triggers a new measurement in the main screen (p. 14). Also used to select an item in a list or to answer “OK” to prompts. Back/STORE — From the main screen (p. 14), used to store the current reading to flash memory.
HS2 and HS2P 7.3.1 GPS Information 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. If the GPS is turned off using the configuration menu (p. A-1), GPS OFF is displayed at the bottom. 7.3.
HS2 and HS2P 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. 19). The upper left of the main screen (p. 14) 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.
HS2 and HS2P 7.3.4 Deficit Display When deficit mode is enabled, the water deficit section is displayed at center right of the main screen (p. 14). The following image shows the main screen without deficit mode enabled. The following image shows the main screen with deficit mode enabled. The water deficit section of the display contains the following information. 8. • SOIL # (soil profile number) — Range: 1 to 10. • RWC — relative water content.
HS2 and HS2P to create a new zone will be presented. If a zone already exists, data are attributed to that zone. NOTE The function stores volumetric water content values. Make a measurement before pressing the 8.2 button. What is 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.
HS2 and HS2P 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 open, 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.
HS2 and HS2P filtered and charted by the computer software based on the zone in which the data was collected. The HydroSense II 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. 14). Zones can be created when data are stored. When the Store (p.
HS2 and HS2P If the button is pressed when the GPS does not have a valid GPS sync, a warning message is display. 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 . To return to the main screen (p. 14) without storing, press . 10. Troubleshooting Problem Explanation / Recommendation Display shows “SENSOR TIMEOUT” continuously.
HS2 and HS2P On the display of my HydroSense II, the battery icon, the Bluetooth icon, and the GPS icon are visible, but a forth icon appears to be missing. The forth icon is the Bluetooth connection icon. It appears only when the HydroSense II is paired to a computer and there is an active data connection between them. This happens when collecting data or changing configuration settings.
HS2 and HS2P 7. Carefully replace the back cover of the display and replace the four screws. 8. Turn over the display and hold the 9. If using the HS2P, reinstall the display onto the pole. button for 3 seconds to activate. 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.
HS2 and HS2P 3. Lift the display from its holder. 11.3 Rod Replacement 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 should be straightened or replaced as soon as possible since non-parallel rods can introduce error and lead to more serious bending or breaking.
HS2 and HS2P The procedure for replacing the rods is as follows: 1. If using the HS2P, slip off the plastic bumper. Bumper Sensor Head Rod Wrench CAUTION 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 coating may affect measurements.
HS2 and HS2P 11.4 Replacing an HS2P Sensor HS2P Pole Sensor Tab Nut Hex Bolt CAUTION Bumper 1. 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.
HS2 and HS2P 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.
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Appendix A. Configuration Menus A.1 Main Menu To enter the main menu, press from the main screen (p. 14). Using the buttons, select the desired menu item and press menu, press . To exit the . A.2 Deficit Mode This menu selects whether or not soil deficit is displayed. Select ON to show deficit results and OFF to hide them. To quit this menu without saving the changes, press . A.3 Bluetooth Power This menu controls power to the Bluetooth module.
Appendix A. Configuration Menus A.4 Time/Date Menu This submenu contains a list of settings to configure the clock system of the HydroSense II. Using the buttons, highlight one of the options and press . Alternatively, press to quit this menu. A.5 Time Set 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.
Appendix A. Configuration Menus A.7 Time Zone 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 . To exit without making changes, press .
Appendix A. Configuration Menus A.8 Time Synchronization The HydroSense II uses 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 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 position. After highlighting a selection from the list, press the menu, press . To quit . A.
Appendix A. Configuration Menus A.11 Brightness 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.
Appendix A. Configuration Menus A.14 GPS Settings This submenu contains a list of settings related to the GPS. Using the buttons, highlight one of the options shown and press Alternatively, press to select that item. to exit the menu. A.15 GPS Power This menu controls power to the GPS module.
Appendix A. Configuration Menus A.17 System Settings This submenu contains a list of system-wide settings. Using the buttons, highlight one of the options shown and press press . Alternatively, to exit the menu. A.18 System on Time 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 buttons to choose a timeout period and press without saving. .
Appendix A. Configuration Menus A.20 Serial Number This screen displays the serial number of the HydroSense II. This should match the serial number labeled on the front panel of the unit. Press exit this screen.
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