(UA-004-64) Manual
Contents
1. that they distort the clear housing Ra a A Goninon endicap with anes A WARNING Do not cut open incinerate heat above 85 C desiccant ticked inside PRBS Lase 185 F or recharge the lithium battery The battery may explode if the logger is exposed to extreme heat or conditions 5 Carefully push the battery out of the holder with a small that could damage or destroy the battery case Do not dispose nonmetallic blunt instrument of the logger or battery in fire Do not expose the contents of the battery to water Dispose of the battery according to local 6 Insert a new battery positive side facing up regulations for lithium batteries 7 Return the circuit board and label to the case carefully aligning the circuit board with the grooves in the case so that the battery faces the ridged side of the case 8 Remove the O ring from the end cap Use the thumb and finger of one hand to hold the cap from the top and bottom and use the thumb and fingers on your other hand to slide the O ring to form a loop as shown Use this loop to roll the O ring off the cap 9 Inspect the O ring for cracks or cuts and replace it if any are detected the O ring is included in the Pendant replacement parts kit UA PARTSKIT 10 Using your fingers not cloth or paper spread a small dot of silicone based grease on the O ring just enough to moisten it all the way around and making sure that the entire O ring surface is completely coated wit2. Approximately every six months 104 F Over 40 C 104 F Approximately every three months Factory Calibration The logger is factory calibrated and does not require any additional calibration To verify proper calibration check the logger s status when it is not logging in the HOBOware software to check the logger s response to gravity When any of the axes are held horizontally you should see a reading close to zero When held vertically with the arrow facing downwards the response should be close to 1 g Battery The logger requires one 3 Volt CR 2032 lithium battery Battery life varies based on the temperature and the frequency at which the logger is recording data the logging interval A new battery typically lasts one year with logging intervals greater than one minute Deployments in extremely cold or hot temperatures or logging intervals faster than one minute may significantly reduce battery life Continuous logging at the fastest logging rate of 0 01 seconds 100 Hz will deplete the battery in as little as one week Replacing the Battery Before you begin You will need a small Philips head screwdriver and silicone based O ring grease such as Parker Super O Lube to complete these steps no petroleum based lubricants The logger should be wiped clean and dried completely before opening it To replace the battery 1 Avoid electrostatic discharge while handling the logger and internal circuit board ground
3. the water depth rating is exceeded The depth rating is approximately 30 m 100 ft at temperatures below 20 C 68 F but is less in warmer water Refer to Plot B for details Do not store the logger in the coupler Remove the logger from the coupler when you are not using it When the logger is in the coupler or near a magnet it consumes more power and will drain the battery prematurely 1 800 LOGGERS HOBO Pendant G Acceleration Data Logger UA 004 Manual Keep the logger away from magnets Being near a magnet can cause false coupler events to be logged It can also launch the logger prematurely if it is waiting for a trigger start Note Static electricity may cause the logger to stop logging To avoid electrostatic discharge transport the logger in an anti static bag and ground yourself by touching an unpainted metal surface before handling the logger For more information search for static discharge in the FAQ section on onsetcomp com Periodically inspect the desiccant and dry it if it is not bright blue The desiccant pack is located in the cap of the logger To dry the desiccant remove the desiccant pack from the cap and leave the pack in a warm dry location until the bright blue color is restored Refer to the Battery section for instructions on removing and replacing the logger cap Temperature Range Desiccant Maintenance Schedule Less than 30 C 86 F Approximately once per year 30 to 40 C 86 to
4. yourself by touching an unpainted metal surface Hold the circuit board by its edges and avoid touching electronics www onsetcomp com HOBO Pendant G Acceleration Data Logger UA 004 Manual 2 Working on a clean dry surface remove the two screws is trapped on the O ring This is necessary to maintain a that secure the end cap to the case and remove the cap waterproof seal 3 Examine the desiccant pack that is tucked into the cap If 12 Very slightly grease the inside rim of the case especially the desiccant is not bright blue put the desiccant pack in a around the screw holes with the silicone grease just warm dry place until the blue color is restored Or for enough to moisten the inside edges without touching any faster drying the desiccant can be dried for two hours ina circuitry Make sure that there is no excess lubricant that 70 C 160 F oven could get onto the logger electronics or label Make sure PPN there is no debris on this surface 4 Gently tap the case to loosen the circuit board and remove it from the case 13 Check that the desiccant pack is tucked into the cap fe a 14 Carefully push the end cap into the lubricated case until the x screw holes are aligned Visually check that the O ring forms J Q a uniform seal all around _ lt f N X PONSE 15 Re fasten the screws Tighten the screws until you feel ey N pr them hit the bottom of the screw holes but not so tight S J I
5. HOBO Pendant G Acceleration onset Data Logger UA 004 64 Manual HOBO Pendant Event Data Logger Model UA 004 64 Included Items e Mounting Bracket e Screw Required Items e HOBOware 2 x or later e USB cable included with software e Pendant Optic USB Base Station amp Coupler BASE U 1 e Optic USB Base Station BASE U 4 or HOBO Waterproof Shuttle U DTW 1 amp Coupler COUPLER2 A 10872 E MAN UA 004 Timebase Error ppm N O on O i ol 100 125 The HOBO Pendant G Acceleration Data Logger is a waterproof three channel logger with 8 bit resolution and can record up to approximately 21 800 combined x y and z axis acceleration readings or internal logger events The logger uses a coupler and optical base station with USB interface for launching and data readout by a computer The logger can be used for a wide variety of experiments demonstrations and field studies by measuring dynamic acceleration resulting from motion shock or vibration It can also detect static acceleration of gravity making it possible to measure tilt activity and inclination The logger uses an internal three axis accelerometer with a range of 3 g based on micro machined silicon sensors consisting of beams that deflect with acceleration These beams are arranged to act as a variable capacitor As the beams move the capacitance changes proportionately This capacitance change is converted to voltage fi
6. h grease As you work the grease into the O ring make sure there is no grit or debris on the O ring 11 Place the O ring back on the end cap making sure it is fully seated and level in the groove Make sure the O ring is not pinched or twisted and that no dirt lint hair or any debris onset 2009 2014 Onset Computer Corporation All rights reserved Onset HOBO Pendant and P oN 1 800 LOGGERS 564 4377 508 759 9500 HOBOware are trademarks or registered trademarks of Onset Computer Corporation All other HOBO Data Loggers www onsetcomp com loggerhelp onsetcomp com trademarks are the property of their respective companies Patent 6 826 664 10872 E MAN UA 004
7. ltered and measured by the logger and displayed in the software in units of g force Specifications Measurement Range 3 g 29 4 m s 96 5 ft s Accuracy 0 075 g 0 735 m s 2 41 ft s at 25 C 77 F 0 105 g 1 03 m s 3 38 ft s from 20 C to 70 C 4 F to 158 F Resolution 0 025 g 0 245 m s 0 8 ft s Logging Interval 1 second to 18 hours 12minutes 15 seconds in Normal mode 0 01 seconds 100 Hz to 0 99 seconds 1 01 Hz in Fast mode Time Accuracy 1 minute per month at 25 C 77 F see Plot A Operating Range In water ice 20 to 50 C 4 to 122 F In air 20 to 70 C 4 to 158 F Water Depth Rating 30 m from 20 to 20 C 100 ft from 4 to 68 F see Plot B Battery Life 1 year typical use in Normal mode 7 days logging at 0 01 seconds 100 Hz in Fast mode Memory 64K bytes approximately 21 8K combined x y and z axis readings or events Materials Polypropylene case stainless steel screws Buna N o ring Weight 18 g 0 6 oz Dimensions 58 x 33 x 23 mm 2 3 x 1 3 x 0 9 inches C The CE Marking identifies this product as complying with all relevant directives in the European Union EU B 40 30 E S 20 Waterproof range 10 T T T T 0 20 o 20 40 60 20 0 20 40 60 Temperature C Temperature C PlotA Plot B Connecting the Logger to a Computer The HOBO Pendant G logger requires HOBOware Pro or HOBOware Lite and either of the following to connect
8. me required to fill this memory depends on how many channels and events are being logged as well as the logging interval For example if you log x y and z axis acceleration at 100 Hz the logger s memory will fill up in less than four minutes An estimated duration based on the logging interval and channels you select is displayed in the Launch Logger window in HOBOware Operation A light LED on the front of the logger confirms logger operation The following table explains when the light blinks during logger operation When The light The logger is awaiting a start Blinks once every eight seconds until because it was configured to logging begins start logging At Interval On Date Time or Using Coupler Blinks once every second when the magnet is present then Normal mode only blinks rapidly three times when logging begins Logger is subjected toa magnetic field Logger is logging in Normal Blinks once every one to four seconds mode the shorter the logging interval the faster the light blinks blinks when logging a sample The logger is logging in Fast Blinks once every quarter second mode Mounting the Logger The provided mounting bracket offers two orientation options for securing the logger to a rigid surface Secure the bracket to the object of interest then use the mounting screw provided to attach the logger to the bracket Protecting the Logger The logger can be damaged if
9. p the alarms launch and read out the logger You can read out the logger or check its status while it continues to log in Normal logging mode only stop it manually with the software or let it record data until the 1 800 LOGGERS HOBO Pendant G Acceleration Data Logger UA 004 Manual memory is full Refer to the software user s guide for complete details on launching reading out and viewing data from the logger Important Do not cover the optical communication window in the logger shown in diagram above with a label or sticker as that may interfere with the communications with the base station or shuttle Triggered Start This logger can be configured to start at your command using the magnet in the coupler to trigger a start To log in Fast mode this is the only way to launch the logger 1 Use HOBOware to launch the logger with Using Coupler selected Remove the logger from the coupler 2 Bring the logger and an empty coupler or strong magnet to the deployment location Important Any magnet can trigger a start This can be helpful but it can also cause a premature start Keep the logger away from strong magnetic fields until you are ready to begin logging 3 When you are ready for the logger to start logging insert the logger into the empty coupler or place it next toa strong magnet and remove it after three seconds Important The logger will not launch if the base station is in the cou
10. pler 4 Verify that the logger s light is blinking at least every four seconds Sample and Event Logging While logging in Normal mode the logger can record two types of data samples and internal logger events Samples are the measurements recorded at each logging interval for example x axis acceleration every minute Events are independent occurrences triggered by a logger activity such as Bad Battery or Host Connected Events help you determine what was happening while the logger was logging Events are not logged in Fast mode Normal vs Fast Logging Modes When you launch the logger you can choose between Normal mode and Fast mode In Normal mode the logger s fastest logging interval is once per second Normal mode is ideal for applications involving tilt activity and inclination These applications do not require information about the dynamics of the acceleration events but rely more on the static acceleration of gravity Fast mode allows logging intervals between 0 01 and 0 99 seconds 100 to 1 01 Hz making it ideal for applications involving vibration and shock These applications are more concerned with the dynamics of the acceleration events over short periods and would not be captured in Normal mode Important Connecting the logger to the computer ora shuttle when logging in Fast mode will stop the logger www onsetcomp com The logger s memory can store roughly 60 000 measurements The ti
11. to the computer e Pendant Optic USB Base Station amp Coupler BASE U 1 OR e Optic USB Base Station BASE U 4 or HOBO Waterproof Shuttle U DTW 1 coupler COUPLER2A If possible avoid connecting at temperatures below 0 C 32 F or above 50 C 122 F 1 Plug the USB connector on the base station into an available USB port on your computer 2 Insert the logger and the base station into the coupler as shown in the following diagrams For BASE U 1 make sure that the logger is inserted in the end of the coupler that has the magnet and that the ridges on the base station and logger are aligned with the grooves in the coupler BASE U 1 amp COUPLER 2 SS j i j V j la e oe IEA Magnet S LOGGER For BASE U 4 or the HOBO Waterproof Shuttle firmly insert the optical end of the base station into the D shaped end of the coupler and make sure that the ridge on the logger is aligned with the groove in the coupler To BASE U 4 or HOBO Waterproof Shuttle Optical DEGER communication window al ee i ee a j j k 7 Ridge side down COUPLER2 A Coupler lever for use with HOBO Waterproof Shuttle 3 Ifyou are using the HOBO Waterproof Shuttle briefly press the coupler lever to put the shuttle into base station mode 4 Ifthe logger has never been connected to the computer before it may take a few seconds for the new hardware to be detected 5 Use the logger software to set u
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