HOBO UX120-006M Data Logger Manual PDF
Contents
1. 0 1 of 0 3 of 0 3 of 0 3 of reading reading reading reading reading Resolution 0 3 uA 40 uV 80 uV 160 uV 384 uV Logger Operating Range Logging Rate Logging Modes Memory Modes Start Modes Stop Modes Restart Mode Time Accuracy Power Source Battery Life Memory Download Type Full Memory Download Time LCD Size Weight Environmental Rating CE Logging 20 to 70 C 4 to 158 F O to 95 RH non condensing Launch Readout 0 to 50 C 32 to 122 F per USB specification 1 second to 18 hours 12 minutes 15 seconds Fixed interval normal burst or statistics Wrap when full or stop when full Immediate push button date amp time or next interval When memory full push button or date amp time Push button 1 minute per month at 25 C 77 F see Plot A Two AAA 1 5 V alkaline batteries user replaceable and USB cable 1 year typical with logging rate of 1 minute and sampling interval of 15 seconds or greater 4 MB 1 9 million measurements maximum USB 2 0 interface Approximately 1 5 minutes LCD is visible from 0 to 50 C 32 to 122 F the LCD may react slowly or go blank in temperatures outside this range 10 8 x 5 41 x 2 54 cm 4 25 x 2 13 x 1 in 107 5 g 3 79 oz IP50 The CE Marking identifies this product as complying with all relevant directives in the European Union EU Note The HOBO U Shuttle U DT 1 is not compatible with this logger HOBO 4 Channel A2. Some sensors such as temperature sensors can be connected directly to the external input jacks but others require additional cables as described in the following sections 4 20mA Input Cable The 4 20mA input cable CABLE 4 20mA measures current from 0 to 20 1 mA Do not expose to current above 20 mA or to www onsetcomp com negative current Do not cut off the end of the gray cable where it connects to the blue and yellow wires as it contains the precision resistor required for current measurement Voltage Input Cable The logger s external inputs can accept the voltage input cable CABLE 2 5 STEREO which allows a voltage to be recorded The input line must not be exposed to signals below O V or above 2 5 V The voltage input cable connections are as follows Wire Connection Red Switched 2 5 V output White Voltage input Black Ground Switched 2 5 V Output The external input channels have a switched 2 5 V output This signal can be used to power a sensor directly or to trigger an external circuit External sensors should draw no more than 4 mA total when powered The switched 2 5 V output turns on about 5 ms before the external channels are measured as shown in the following diagram The shaded area shows the 100 ms period for each enabled channel during which the logger samples the input signals Ch1 Ch2 Ch3 Ch4 100ms 100ms 100ms 100ms gt ims When using multiple voltage and or current inputs the from
3. mounting materials see Mounting the Logger After logging begins you can read out the logger at any time see Reading Out the Logger for details Connecting External Sensors The logger can accept up to four external sensors refer to onsetcomp com for a current list of supported sensors Plug each sensor into one of the four input jacks making sure each sensor is firmly seated in the appropriate numbered jack based on how you configured that corresponding channel in the Launch Logger window For example if you selected TMCx HD for sensor 1 in the Launch Logger window then you must plug the TMCx HD temperature sensor into the port labeled 1 on the logger otherwise the logger will not record the correct data Connect each sensor before logging begins Refer to the sensor or cable manual for more information on connecting the sensor and wiring if applicable If you disconnect a sensor or if it is not fully inserted into the jack while the logger is logging an erroneous sensor reading can appear on the LCD for that channel In addition erroneous readings will be logged and saved in the data file depending on the logging interval e g if a sensor is disconnected for 5 minutes and the logging interval is set to 1 minute then there will be 5 erroneous data points while the sensor was disconnected If you reconnect the sensor the correct values will display on the LCD again and will be logged and saved in the data file
4. the actual sensor values every 5 minutes In addition the logger will take a sample every 30 seconds and temporarily store it in memory The logger will then calculate the maximum minimum average and standard deviation using the samples gathered over the previous 5 minute period and log the resulting value s When reading out the logger this would result in 5 data series for each channel one sensor series with data logged every 5 minutes plus four maximum minimum average and standard deviation series with values calculated and logged every 5 minutes based on the 30 second sampling To set up statistics 1 Select Statistics for Logging Mode in the Launch Logger window If Statistics has already been configured for this logger click the Edit button in the Launch Logger window 2 Click the Maximum Minimum Average and Standard Deviation checkboxes for each of the statistics you want to calculate during logging Note that Average is automatically enabled when selecting Standard Deviation In addition the more statistics you record the shorter the logger duration and the more memory is required Statistics How does Statistics differ from Filters For each enabled sensor log the Madmum Minimum v Standard Deviation requires Average Sampling every 30 seconds v The sampling interval must be less than and a factor of the logging interval Logging Interval 1 minute Logging Duration 83 1 days Help Cancel O
5. the high or low alarm that you configured Press and release the Alarm Stats button until the alm symbol described later in this chart is displayed on the screen This symbol at left will clear depending on how alarms were configured in HOBOware If the alarm was configured to clear when the logger is relaunched this symbol will remain on the LCD Otherwise it will clear when the sensor reading is back within the alarm limits or by pressing the Alarm Stats button for 3 seconds This is the channel number associated with the sensor reading channel 1 for this example Up to four channels are visible at one time This is an example of the units entered for the sensor which appears to the right of the channel number The unit type is determined by what was entered in the LCD Units field for that sensor in HOBOware See Setting up the Logger for more details Note that units for temperature sensors are displayed as F or C only The logger has been configured to start logging on a particular date time The display will count down in days hours minutes and seconds until logging begins In this example 5 minutes and 38 seconds remain until logging will begin www onsetcomp com HOBO 4 Channel Analog Data Logger UX120 006M Manual LD Symbol Description Setting up the Logger LOGGING TOE DEBEL I CUN ENUY ORINE Use HOBOware to set up the logger including setting alarms TAS OBBE Nas VEAN CONMEU
6. HOBO 4 Channel Analog Data Logger UX120 006M Manual onsete HOBO 4 channe analog logger HOBO 4 Channel Analog Data Logger UX120 006M Included Items e Command strip e Double sided tape e Hook amp loop strap e Two AAA 1 5 V alkaline batteries Required Items e HOBOware 3 6 or later e USB cable included with software Sensors and cables available at www onsetcomp com 17384 D The HOBO 4 Channel Analog data logger has 16 bit resolution and can record up to 1 9 million measurements or events The four external channels accept a variety of sensors including temperature and split core AC current sensors as well as 4 20 mA and voltage input cables sold separately Using HOBOware you can easily configure an alarm to trip when the sensor reading rises above or falls below a measurement that you specify Or you can set up burst logging in which the logger records data at a different interval during certain conditions The logger can also calculate minimum maximum average and standard deviation statistics This easy to use data logger has a built in LCD screen to check current readings and to monitor logging status battery use and memory consumption in between readouts Specifications Logger with CABLE CABLE 2 5 CABLE CABLE CABLE Cable Type 4 20mA STEREO ADAP5 ADAP10 ADAP24 Measurement O to 20 1 mA Oto2 5V 0to5 0V Oto 10 V Oto 24V Range Accuracy 0 001 mA 0 1 mV 0 2 mV 0 4 mV 1 0 mV 0 2 of
7. K 3 Set the sampling interval which must be less than and a factor of the logging interval Choose either a preset sampling interval or select Custom and enter your own sampling interval Keep in mind that the more frequent the sampling rate the greater the impact on battery life 4 Click OK when done This will return you to the Launch Logger window Click the Edit button next to Logging Mode in the Launch Logger window to make additional changes Once logging begins click the Alarm Stats button on the logger to cycle through the current maximum minimum average and standard deviation data on the LCD screen You can plot the Statistics series once you read out the logger Reading Out the Logger To read out the logger connect it to the computer with a USB cable In HOBOware select Readout from the Device menu You can then save the data plot it and export it for further analysis Refer to the HOBOware Help for details Battery Information The logger requires two user replaceable AAA 1 5 V alkaline or optional lithium batteries for operation at the extreme ends of the logger operating range Expected battery life varies based 1 800 LOGGERS HOBO 4 Channel Analog Data Logger UX120 006M Manual Recording Internal Logger Events The logger records the following internal events to track logger operation and status You can plot these events in HOBOware after reading out the logger and opening the data file Internal Eve
8. TEO TOBLOPAOLRING selecting the options to start and stop logging and choosing a when memory fills The memory bar indicates the logging mode approximate space remaining in the logger to DAMB MEM record data When first launched all five segments 1 Install the batteries See Battery Information for details in the bar will be empty In this example the logger memory is almost full only one segment in 2 Connect the logger and open the Launch Logger window the memory bar is empty To connect the logger to a computer use the USB cable The logger has been configured to never stop provided Click the Launch icon on the HOBOware toolbar logging wrapping The logger will continue or select Launch from the Device menu recording data indefinitely with newest data _ overwriting the oldest data When first launched Important USB 2 0 specifications do not guarantee SSEEQMEM all five segments in the memory bar will be empty operation outside the range of 0 C 32 F to 50 C 122 F In this example the memory is full all five segments are filled in and new data is now overwriting the oldest data This will continue until the logger is stopped or the battery runs out 3 Configure a sensor Under Configure Sensors to Log click the checkbox for sensor 1 Select the type of sensor or cable These symbol thowthemadmum minitum that will be connected to channel 1 on the logger Type a max average and standard deviation values
9. d record data every 10 seconds Once the temperature rises back to 32 F the logger will then return to normal mode logging every 5 minutes To set up burst logging 1 Select Burst for Logging Mode in the Launch Logger window If Burst has already been configured for this logger click the Edit button in the Launch Logger window 2 Inthe Burst Logging window select a sensor from the list In the following example a temperature sensor was selected Burst Logging S While any of these condition s are met Sensor OC Voltage V 3 Temperature F 38 Temperature F f Max 212 000 F V High Limit 85 000 v Low Limit 32 000 Limt value s are set to closest value supported by logger Min 40 000 F If Log data at the burst logging interval 30 seconds v The burst logging interval must be less than the logging interval Logging Interval 5 minutes Logging Duration 177 6 days minimum 4 9 years maximum Cancel ox 3 Select the High Limit checkbox if you want to set up a condition in which burst logging will occur when the sensor reading rises above the high limit value Type in the value or drag the red upper slider 1 800 LOGGERS HOBO 4 Channel Analog Data Logger UX120 006M Manual 4 Select the Low Limit checkbox if you want to set up a condition in which burst logging will occur when the sensor reading falls below the low limit value Type in the value or drag the blue low
10. de For example let s assume the logger has a 10 minute logging interval and logged a data point at 9 05 Then the high limit was surpassed and burst logging began at 9 06 Burst logging then continued until 9 12 when the sensor reading fell back below the high limit Now back in normal mode the next logging interval will be 10 minutes from the last burst logging point or 9 22 in this case If burst logging had not occurred the next data point would have been at 9 15 e A New Interval event will appear on the plot if you select events for plotting in the Plot Setup window each time the logger enters or exits burst logging mode Statistics Statistics is a logging mode in which the logger calculates maximum minimum average and standard deviation statistics during logging recording the results at each logging interval based on samples taken at a rate you specify This will result in up to four additional series per sensor that record the following information at each logging interval e The maximum or highest sampled value e The minimum or lowest sampled value e An average of all sampled values and e The standard deviation from the average for all sampled values www onsetcomp com For example let s say the logging interval is set to 5 minutes and the sampling interval is set to 30 seconds with maximum minimum average and standard deviation all enabled Once logging begins the logger will measure and record
11. ed on the sensor type This means the value that triggers the alarm may differ slightly than the value entered e When you read out the logger high and low alarm levels will be displayed on the plot along with Chan lt gt Alarm Tripped and Chan lt gt Alarm Cleared events showing when the alarm tripped and cleared The Chan lt gt Alarm Cleared event contains the value that was furthest out of range for the sensor before the alarm cleared see the Points table for the actual value Burst Logging Burst logging is a logging mode that allows you to set up more frequent logging when a specified condition is met For example let s say the logger has a temperature sensor connected to channel 1 and is recording data at a 5 minute logging interval Burst logging is configured on channel 1 to log every 10 seconds when the temperature goes above 85 F the high limit or falls below 32 F the low limit This means the logger will record data every 5 minutes as long as the temperature remains between 85 F and 32 F Once the temperature reaches 90 F for example the logger will switch to the faster logging rate and record data every 10 seconds until the temperature falls back below the high limit or 85 F in this case At that time logging then resumes every 5 minutes at the normal logging interval Similarly if the temperature falls to 30 F for example then the logger would switch to burst logging mode again an
12. er slider Repeat steps 2 through 4 for any additional sensors Set the burst logging interval which must be less than the logging interval Select either a preset burst logging interval or select Custom and enter your own interval Keep in mind that the more frequent the burst logging rate the greater the impact on battery life and the shorter the logging duration 7 Click OK when done This will return you to the Launch Logger window Click the Edit button next to Logging Mode in the Launch Logger window to make additional changes Notes e Once the logger is launched the high and low burst logging limits are only checked when the logger s LCD screen refreshes once every 15 seconds Therefore if you set the logging interval to less than 15 seconds and the sensor reading falls outside the limits the burst logging will not begin until the next 15 second refresh cycle e If high and or low limits have been configured for more than one sensor then burst logging will begin when any high or low condition goes out of range Burst logging will not end until all conditions on all sensors are back within normal range e The actual values for burst logging limits are set to the closest values supported by the logger based on the sensor type e Once the high or low condition clears the logging interval time will be calculated using the last recorded data point in burst logging mode not the last data point recorded in normal mo
13. eries 3 Insert two new batteries observing polarity 4 Reinsert the battery door and snap it back into place Mounting magnet a Mounting Battery door magnets A WARNING If using optional lithium batteries do not cut open incinerate heat above 85 C 185 F or recharge the lithium batteries The batteries may explode if the logger is exposed to extreme heat or conditions that could damage or destroy the batteries case Do not dispose of the logger or batteries in fire Do not expose the contents of the batteries to water Dispose of the batteries according to local regulations for lithium batteries HOBOware provides the option of recording the current battery voltage at each logging interval which is disabled by default Recording battery life at each logging interval takes up memory and therefore reduces logging duration It is recommended you only record battery voltage for diagnostic purposes onset 2013 2015 Onset Computer Corporation All rights reserved Onset HOBO and HOBOware are 1 800 LOGGERS 564 4377 508 759 9500 trademarks or registered trademarks of Onset Computer Corporation All other trademarks are the HOBO Data Loggers www onsetcomp com loggerhelp onsetcomp com property of their respective companies 17384 D
14. igh Alarm checkbox or drag the red upper slider in the Configure Alarms window Select the Low Alarm checkbox if you want an alarm to trip when the sensor reading falls below the low alarm value Type the reading next to the Low Alarm checkbox or drag the blue lower slider Set the duration before an alarm is tripped Select either Cumulative or Consecutive If you select Cumulative then the alarm will trip when the time the sensor is out of range over the course of the deployment is equal to the selected duration If you select Consecutive then the alarm will trip when the time the sensor is continuously out of range is equal to the selected duration For example the high alarm for temperature is set to 85 F and the duration is set to 30 minutes If Cumulative is selected then an alarm will trip once a sensor reading has been at or above 85 F for a total of 30 minutes since the logger was configured specifically this could be 15 minutes above 85 F in the morning and then 15 minutes above 85 F again in the afternoon If Consecutive is selected then an alarm will trip only if all sensor readings are 85 F or above for a continuous 30 minute period Configure Alarms em Sensor Alarm Settings Sensor DC Voltage V Temperature F Temperature F Max 212 000 F ay Duration of out of range samples displayed before alarm is raised v High Alarm 95 000 gt 00 Hr 00 Min V Low Alarm 25 000 Alarm vale
15. is set to closest value supported by logger Min 40 000 F Sensor Alarm Mode Cumulative Raise alarm when sensor is out of range for a particular number of samples selected above Consecutive Raise alarm when sensor is out of range consecutively for a particular 2 number of samples selected above Additional Alarm Settings Maintain Visual Alarm Until Host has relaunched logger Sensor reading within limits Cleared with button press Help Cancel OK Repeat steps 2 through 6 for any additional sensors Choose how long the logger should maintain the sensor alarm once it has tripped Select Host has relaunched logger if you want the alarm to remain visible on the LCD until the next time you relaunch the logger Select Sensor reading within limits if you want the alarm to clear once the sensor reading returns to the normal range between the high and low alarm limits Select Cleared with button press if you want the alarm to remain on until you press the Alarm Stats button on the logger Click OK to save alarm settings Notes e Once the logger is launched alarms will trip as determined by these settings Logger alarms will display on the LCD screen Note that the alarm limits are only www onsetcomp com checked when the logger s LCD screen refreshes every 15 seconds e The actual values for the high and low alarm limits are set to the closest values supported by the logger bas
16. most label for the sensor if desired Be sure to connect the sensor min recently calculated by the logger if the logging before logging begins mode has been set to Statistics in HOBOware 4 Set up scaling optional You can configure some sensors avg Press the Alarm Stats button for 1 second to cycle to scale logged data into different values and units than the sdo mone Ede eet iE ANVANAPIE StALSUCS y Any aarm default If the sensor supports scaling click the Scaling readings and back to the current sensor reading l button and type in the appropriate values and units consult This is the sensor reading that tripped the alarm the sensor user manual for recommended scaling factors Press the Alarm Stats button to view this reading f alm Prese iken arms toie buton arain oele Click Save and return to the Launch Logger window through any statistics and return to the current 5 Set the LCD units optional Each sensor has its own readings default units that will appear on the logger LCD Type in up The launch settings are being loaded onto the to 3 characters if you want a different unit name to appear 1 afd logger from HOBOware Do not disconnect the on the LCD than the default Units for temperature sensors USB cable during this process are F or C and cannot be changed Note that if you have An error occurred while loading the launch configured Scaling for the sensor then the scaled units _ _ configurations onto the logger from HOBOwa
17. nal Click the Alarms button if you want to configure an alarm to trip when the sensor reading is above or below a value you specify See Setting up Alarms for details e When the logger has stopped logging the LCD screen will remain on until the logger is offloaded to a computer or unless launched with the Turn LCD off option Once the logger has been offloaded and disconnected from the computer the LCD will turn off automatically after 2 hours The LCD will turn back on the next time the logger is connected to the computer 7 Configure filters optional Click the Filters button to create additional filtered data series Any filtered series will be available automatically upon reading out the logger 1 800 LOGGERS 3 www onsetcomp com 8 Configure additional sensors Repeat steps 3 through 7 to configure up to three more sensors 9 Select the Logging Interval Select a logging interval from 1 second to a maximum of 18 hours 12 minutes and 15 seconds 10 Select the Logging Mode e Fixed Interval In Fixed Interval mode data will always be recorded at the regular logging interval set in the previous step This is the default setting e Burst In Burst mode logging will occur at a different interval when a specified condition is met See Burst Logging for more information e Statistics In Statistics mode maximum minimum average and standard deviation statistics are calculated for the temperature during loggi
18. nalog Data Logger UX120 006M Manual Specifications continued LCD Screen This logger is equipped with an LCD screen that displays details about the current status This example shows all 25 0 0 0 a a T 25 0 S i A m 50 0 amp CH1 a 75 0 h 100 0 CH3 20 25 25 47 5 70 amp Temperature C Plot A Time Accuracy LCD Symbol START Logger Components and Operation Start Stop Button STOP Alarm Stats Button USB Port CLEAR LCD Screen a maw External Inputs 3 Start Stop Button Press this button for 3 seconds to start or stop logging data or to resume logging on the next even logging interval This requires configuring the logger in HOBOware with a push button start or stop and with Resume logging on next button push selected see Setting up the Logger You can also press this button for 1 second to record an internal event see Recording Internal Logger Events or to turn the LCD screen on if the option to turn off the LCD has been enabled see Setting up the Logger Alarm Stats Button Use this button to clear a tripped alarm see Setting up Alarms or to switch between statistics alarm readings and the current sensor reading Mounting Loops Use the two mounting loops only one visible in the diagram to mount the logger with the hook and loop strap see Mounting the Logger a NA Me External Inputs Use these 2 5 mm jacks not visible in the diag
19. ng sampling at an interval you specify See Statistics for more information 11 Choose when to start logging e Now Logging begins immediately e At Interval Logging will begin at the next even interval as determined by the selected logging interval e On Date Time Logging will begin at a date and time you specify e Push Button Logging will begin once you press the Start Stop logging button for 3 seconds 12 Choose when to stop logging e When Memory Fills Logging will end once the logger memory is full e Never Wrap When Full The logger will continue recording data indefinitely with newest data overwriting the oldest e Push Button Logging will end once you press the Start Stop logging button for 3 seconds Note that if you also choose Push Button to start logging then you will not be able to stop logging until 30 seconds after logging begins If you select the Push Button setting then you also have the option to select Allow button restart This allows you to stop and then restart logging during the deployment by pushing the Start Stop button on the logger for 3 seconds Important When Allow button restart is selected and you use the Start Stop button to stop and restart logging logging will restart on the next even logging interval not at the time the button was pushed For example a logger started logging at 7 00 AM with a logging interval set to 1 hour If you press the Start Stop button t
20. nt Name Definition Host Connected The logger was connected to the computer Started The Start Stop button was pressed to begin logging Stopped The logger received a command to stop recording data from HOBOware or by pushing the Start Stop button Button Up Button The Start Stop button was pressed for Down 1 second Chan lt gt Alarm Tripped An alarm has tripped on that channel Chan lt gt Alarm An alarm has cleared on that channel This Cleared event also contains the value that was furthest out of range for the sensor before the alarm cleared The logger has entered or exited burst logging mode New Interval Safe Shutdown The battery level dropped below 1 85 V the logger performs a safe shutdown Mounting the Logger There are several ways to mount the logger using the materials included e Use the four built in magnets on the back of the logger to mount it to a magnetic surface e Attach the Command strip to the back of the logger to mount it a wall or other flat surface e Use the double sided tape to affix the logger to a surface e Insert the hook and loop strap through the mounting loops on both sides of the logger to mount it to a curved surface such as a pipe or tubing Protecting the Logger The logger is designed for indoor use and can be permanently damaged by corrosion if it gets wet Protect it from condensation If the message FAIL CLK appears on the LCD screen there was a fail
21. o stop the logger at 8 45 AM and then press the button again at 10 15 AM logging will not begin immediately at 10 15 Instead logging will begin again at 11 00 AM which is the next even interval time based on your 1 hour logging interval Therefore depending on the logging interval the gap between the time you press the button to resume logging and the time actual logging begins could be significant The faster the logging interval the less time will elapse before logging resumes 1 800 LOGGERS HOBO 4 Channel Analog Data Logger UX120 006M Manual e Specific Stop Time Logging will end at a date and time you specify Note that if you also configure the logger for a Push Button stop and to Allow button restart then the logger will stop logging at the date you select regardless of how many times you stop and restart the logger with the Start Stop button 13 Choose whether to keep the LCD on or off By default the LCD will always remain on while logging If you select the Turn LCD off checkbox the LCD will not show the current readings status or other information while the logger is logging You will however be able to temporarily turn the LCD screen on by pressing the Start Stop button for 1 second if you select this option 14 Click the Start button to launch the logger Note that the Start button text changes based on the Start Logging selection Disconnect the logger from the computer and deploy it using the
22. ram to connect up to 4 sensors see Connecting External Sensors USB Port Use this port to connect the logger to the computer via USB cable see Setting up the Logger and Reading Out the Logger i 1 800 LOGGERS 2 A DA A TA AE Jafa fafafa re Theberge bebe be LOGGING symbols illuminated on the LCD screen followed by definitions of each symbol in the table CLEAR WA AVA BVA WA AVA N A WANG DAN CH2 yi Wid DAN _ A ohms MMM ur yd WN WAN maxminavasdoalm NOOO ceo occ UICC UC Description The logger is waiting to be launched Press and hold the Start Stop button for 3 seconds to launch the logger The logger has been launched with push button stop enabled press and hold the Start Stop button for 3 seconds to stop the logger Note If you also launched the logger with a push button start this symbol will not appear on the display for 30 seconds An alarm is ready to be cleared This will only appear if Cleared with button press was selected in the HOBOware alarm settings Press the Alarm Stats button for 3 seconds to clear the alarm The battery indicator shows the approximate battery power remaining This is an example of a temperature reading from a temperature sensor Temperature units are determined by the settings in HOBOware To switch between Celsius and Fahrenheit change the Display Preferences in HOBOware before launching the logger A sensor reading is above or below
23. re name will appear in the Launch Logger window for the mr Make sure the USB cable is connected to both the sensor instead of its default unit You can still override this ORBEK ana Ine compuler ana ty aunching again by entering a new name in the LCD units field gt a The logger has been stopped with HOBOware or a Jeu because the memory is full reach _ Notes a e You can disable the LCD screen when logging Select E e a Turn LCD off when setting up the logger as described in Sensors the next section When this option is enabled you can feo oe a eA still temporarily view the LCD screen by pushing the 7 2 C CABLE ADAP24 0 24 Volts DC ed lt Enter label here gt LCD units V eSa Start Stop button for 1 second The LCD will then remain _ EE on for 10 minutes m e The LCD screen refreshes every 15 seconds while logging a regardless of the logging interval selected in HOBOware Lopgng beer Aminin If you choose a logging interval less than 15 seconds the PEPEE erre data will be recorded at the faster interval but the sensor Start Logging sa BoSS readings will only be updated on the screen every 15 d e a seconds afer e If asensor is disconnected during logging erroneous ees Skip launch window neat time Cancel Start values will display for that sensor on the LCD and return we to normal readings once reconnected See Connecting External Sensors for more details 6 Set up alarms optio
24. the current source s and the O V line from the voltage source s are tied together at the logger If these lines are at different voltage potentials this may cause inaccurate readings or even damage your logger Keep in mind that these lines may also be tied to earth ground through the USB cable when the logger is connected to the computer Special precautions may be necessary if any of the voltage or current source common lines are not tied to earth ground Input isolators may be needed in industrial environments to prevent errors caused by ground loops A WARNING Analog channel input cannot exceed 2 5 V DC For sensor outputs up to 24 V DC use the appropriate voltage adapter cable CABLE ADAPX Setting up Alarms You can set an alarm to trip when a sensor reading rises above or falls below a specified value on any of the four sensor channels To set an alarm 1 Click the Alarms button from the Launch Logger window If the Alarms button is disabled make sure the Logging Mode is not set to Burst Alarms can only be configured if the logger is in Normal or Statistics mode 2 Inthe Configure Alarms window select a sensor from the list In the example in this section a temperature sensor was selected 1 800 LOGGERS 9 HOBO 4 Channel Analog Data Logger UX120 006M Manual Select the High Alarm checkbox if you want an alarm to trip when the sensor reading rises above the high alarm value Type the reading next to the H
25. ure with the internal logger clock possibly due to condensation Remove the batteries immediately and dry the circuit board Note Static electricity may cause the logger to stop logging The logger has been tested to 8 KV but avoid electrostatic discharge by grounding yourself to protect the logger For more information search for static discharge in the FAQ section on onsetcomp com on the ambient temperature where the logger is deployed the logging or sampling interval frequency of offloading to the computer number of channels that are active if burst or statistics logging modes are active and battery performance New batteries typically last 1 year with logging intervals greater www onsetcomp com HOBO 4 Channel Analog Data Logger UX120 006M Manual than 1 minute Deployments in extremely cold or hot temperatures a logging interval faster than 1 minute ora sampling interval faster than 15 seconds can impact battery life Estimates are not guaranteed due to uncertainties in initial battery conditions and operating environment The logger can also be powered by the USB cable when the remaining battery voltage is too low for it to continue logging Connect the logger to the computer click the Readout button on the toolbar and save the data as prompted Replace the battery before launching the logger again To install or replace the batteries 1 Open the battery door on the back of the logger 2 Remove any old batt
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