Onset Computer Corporation HOBO UX100-001 User manual

HOBO® Temp Data Logger (UX100-001) Manual
16208-B
The HOBO Temp data logger records temperature in indoor environments with its integrated
sensor. Using HOBOware®, you can easily configure the logger alarm to trip for specific high or
low temperatures. 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 compact data logger has a built-in LCD screen to monitor
temperature, logging status, battery use, and memory consumption in between readouts.
Specifications
Temperature Sensor
Range -20° to 70°C (-4° to 158°F)
Accuracy ±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F), see Plot A
Resolution 0.024°C at 25°C (0.04°F at 77°F); see Plot A
Response Time 8 minutes in air moving 1 m/s (2.2 mph)
Drift <0.1°C (0.18°F) per year
Logger
Logger Operating Range Logging: -20° to 70°C (-4° to 158°F); 0 to 95% RH (non-condensing)
Launch/Readout: 0° to 50°C (32° to 122°F) per USB specification
Logging Rate 1 second to 18 hours, 12 minutes, 15 seconds
Logging Modes Normal, burst, or statistics
Memory Modes Wrap when full or stop when full
Start Modes Immediate, push button, date & time, or next interval
Stop Modes When memory full, push button, or date & time
Restart Mode Push button
Time Accuracy ±1 minute per month at 25°C (77°F), see Plot B
Battery Life 1 year, typical with logging rate of 1 minute and sampling interval of
15 seconds or greater
Battery Type One 3V CR2032 lithium battery
Memory 128 KB (84,650 measurements, maximum)
Download Type USB 2.0 interface
Full Memory Download Time 20 seconds
LCD 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
Size 3.66 x 5.94 x 1.52 cm (1.44 x 2.34 x 0.6 in.)
Weight 23 g (0.81 oz)
Environmental Rating IP50
The CE Marking identifies this product as complying with all relevant
directives in the European Union (EU).
Plot A: Temperature Accuracy and Resolution Plot B: Time Accuracy
HOBO Temp Data Logger
UX100-001
Included Items:
•Command™ strip
•Double-sided tape
•Hook & loop strap
Required Items:
•HOBOware 3.4 or later
•USB cable (included with
software)

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Logger Components and Operation
Start/Stop Button: Press this button for 3 seconds to start or
stop logging data, or to resume logging. 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).
Battery Door: Open the battery door on the top of the logger to
access the logger battery (see Battery Information).
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 temperature reading.
Temperature Sensor: This sensor is located on the top of the
logger case to the right of the Alarm/Stats button.
Mounting Loops: Use the two mounting loops to mount the
logger with the hook-and-loop strap (see Mounting the Logger).
USB Port: Use this port (not visible in the diagram) to connect
the logger to the computer or the HOBO U-Shuttle via USB
cable (see Setting up the Logger and Reading Out the Logger).
LCD Screen: This logger is equipped with an LCD screen that
displays details about the current status. This example shows all
symbols illuminated on the LCD screen followed by definitions
of each symbol in the table below.
LCD Symbol 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.
The battery indicator shows the approximate
battery power remaining.
LCD Symbol Description
The logger has been configured to stop logging
when memory fills. The memory bar indicates the
approximate space remaining in the logger to
record data. When first launched, all five segments
in the bar will be empty. In this example, the
logger memory is almost full (only one segment in
the memory bar is empty).
The logger has been configured to never stop
logging (wrapping). The logger will continue
recording data indefinitely, with newest data
overwriting the oldest data. When first launched,
all five segments in the memory bar will be empty.
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.
The logger is currently logging.
A sensor reading is above or below the high or low
alarm that you configured. Press and release the
Alarm/Stats button until the “alm” symbol
(described below) 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.
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.
These symbols show the maximum, minimum,
average, and standard deviation values most
recently calculated for the logger (if the logging
mode has been set to Statistics in HOBOware).
Press the Alarm/Stats button for 1 second to cycle
through each of the available statistics and then
back to the current temperature (or to the alarm
value if applicable).
This is the sensor reading that tripped the alarm.
Press the Alarm/Stats button to view this reading.
Press the Alarm/Stats button again to cycle
through any statistics (defined above) and
ultimately back to the current temperature.
This is an example of a temperature reading.
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.
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.
The launch settings are being loaded onto the
logger from HOBOware. Do not disconnect the
USB cable during this process.
An error occurred while loading the launch
configurations onto the logger from HOBOware.
Make sure the USB cable is connected to both the
logger and the computer and try launching again.
The logger has been stopped with HOBOware or
because the memory is full.
Alarm/Stats Button
Start/Stop Button
USB Port
Mounting
Loop
Battery Door
Mounting
Loop
LCD Screen
Tem
p
erature Sensor

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Notes:
•You can disable the LCD screen when logging. Select
“Turn LCD off” when setting up the logger as described in
the next section. When this option is enabled, you can
still temporarily view the LCD screen by pushing the
Start/Stop button for 1 second. The LCD will then remain
on for 10 minutes.
•The LCD screen refreshes every 15 seconds regardless of
the logging interval selected in HOBOware. If you choose
a logging interval less than 15 seconds, the data will be
recorded at the faster interval, but the temperature
readings will only be updated on the screen every 15
seconds.
•When the logger has stopped logging, the LCD screen will
remain on until the logger is offloaded to a computer or
HOBO U-Shuttle (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.
Setting up the Logger
Use HOBOware to set up the logger, including setting alarms,
selecting the options to start and stop logging, and choosing a
logging mode.
1. Connect the logger and open the Launch Logger window.
To connect the logger to a computer, use the USB cable
provided. Click the Launch icon on the HOBOware toolbar
or select Launch from the Device menu. The temperature
sensor is automatically selected for logging.
Important: USB 2.0 specifications do not guarantee
operation outside the range of 0°C (32°F) to 50°C (122°F).
2. Set up alarms (optional). Click the Alarms button if you
want to configure an alarm to trip when the temperature is
above or below a value you specify. See Setting up Alarms
for details.
3. 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.
4. Select the Logging Interval. Select a logging interval from 1
second to a maximum of 18 hours, 12 minutes, and 15
seconds.
5. Select the Logging Mode:
•Normal. In Normal mode, data will always be recorded at
the regular logging interval set in the previous step. This
is the default setting.
•Burst. In Burst mode, logging will occur at a different
interval when a specified condition is met. See Burst
Logging for more information.
•Statistics. In Statistics mode, maximum, minimum,
average, and standard deviation statistics are calculated
for the temperature during logging, sampling at an
interval you specify. See Statistics for more information.
6. Choose when to start logging:
•Now. Logging begins immediately.
•At Interval. Logging will begin at the next even interval as
determined by the selected logging interval.
•On Date/Time. Logging will begin at a date and time you
specify.
•Push Button. Logging will begin once you press the
Start/Stop logging button for 3 seconds.
7. Choose when to stop logging:
•When Memory Fills. Logging will end once the logger
memory is full.
•Never (Wrapping). The logger will continue recording
data indefinitely, with newest data overwriting the
oldest.
•Push Button. Logging will end once you press the
Start/Stop logging button for 3 seconds. If you select
Push Button, you also have the option to select “Resume
logging on next button push.” Select this if you want to
be able to start and stop logging at any time during the
deployment by pushing the Start/Stop button on the
logger. 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.
•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 “Resume logging on next
button push,” 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.
8. 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.
9. Click the Start button to launch the logger. Disconnect the
logger from the computer and deploy it using the mounting

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materials (see Mounting the Logger). After logging begins,
you can read out the logger at any time (see Reading Out
the Logger for details).
Setting up Alarms
You can set an alarm to trip on the logger when a sensor
reading rises above or falls below a specified value. 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. Select the High Alarm checkbox if you want an alarm to
trip when the temperature rises above the high alarm
value. Type the reading next to the High Alarm checkbox
or drag the red upper slider in the Configure Alarms
window.
3. Select the Low Alarm checkbox if you want an alarm to
trip when the temperature falls below the low alarm
value. Type the reading next to the Low Alarm checkbox
or drag the blue lower slider.
4. Set the “Number of out-of-range samples displayed
before alarm is raised,” which is the number of sensor
readings needed to trigger each alarm. The time next to
the “Number of out-of-range…” field indicates the
amount of time it will take for the alarm to trip based on
the number you entered in that field and the 15-second
LCD refresh rate.
5. Select either Cumulative or Consecutive for the Sensor
Alarm Mode. If you select cumulative, the alarm will trip
after a specific number of samples (as set in the previous
step) are outside the limits (the high or low samples do
not need to be consecutive). If you select Consecutive,
the alarm will trip after a specific number of samples (as
set in the previous step) outside the limits are displayed
in a row.
6. 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.
7. Click OK to save alarm settings.
Notes:
•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
checked when the logger’s LCD screen refreshes every 15
seconds.
•The actual values for the high and low alarm limits are set
to the closest value supported by the logger. For
example, the closest value to 85°F that the UX100 series
logger can record is 84.990°F and the closest value to
32°F is 32.043°F. In addition, alarms can trip or clear
when the sensor reading is within the logger
specifications of 0.02°C resolution. This means the value
that triggers the alarm may differ slightly than the value
entered. For example, if the High Alarm is set to
75.999°F, the alarm can trip when the sensor reading is
75.994°F (which is within the 0.02°C resolution).
•When you read out the logger, high and low alarm levels
will be displayed on the plot along with “Chan 1 Alarm
Tripped” and “Chan 1 Alarm Cleared” events showing
when the temperature alarm tripped and cleared. The
“Chan 1 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 is recording data at a 5-minute
logging interval and burst logging is configured to log every 10
seconds when the temperature goes above 85°F (the high level)
or falls below 32°F (the low level). 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 level (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 and 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. Note that you cannot set up alarms with burst
logging.
2. In the Burst Logging window, select the High Level
checkbox if you want to set up a condition in which burst
logging will occur when the sensor reading rises above

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the high level value. Type in the value or drag the red
upper slider.
3. Select the Low Level 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 lower slider.
4. 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.
5. 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:
•Once the logger is launched, the high and low burst
logging levels 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 levels, the burst
logging will not begin until the next 15-second refresh
cycle.
•The actual values for the burst logging levels are set to
the closest value supported by the logger. For example,
the closest value to 85°F that the logger can record is
84.990°F and the closest value to 32°F is 32.043°F.
•Burst logging mode can begin or end when the sensor
reading is within the logger specifications of 0.02°C
resolution. This means the value that triggers burst
logging may differ slightly than the value entered. For
example, if the High Level for a temperature alarm is set
to 75.999°F, burst logging can start when the sensor
reading is 75.994°F (which is within the 0.02°C
resolution).
•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 mode.” For example, let’s assume
the logger has a 10-minute logging interval and logged a
data point at 9:05. Then, the high level 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 level. 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.
•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:
•The maximum, or highest, sampled value,
•The minimum, or lowest, sampled value,
•An average of all sampled values, and
•The standard deviation from the average for all sampled
values.
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 the actual
temperature sensor values every 5 minutes. In addition, the
logger will take a temperature 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: one temperature 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.

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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
There are two options for reading out the logger: connect it to
the computer with a USB cable and read out it with HOBOware,
or connect it to a HOBO U-Shuttle (U-DT-1, firmware version
1.18m030 or higher) and then offload the data files from the
U-Shuttle to HOBOware. Refer to the HOBOware Help for more
details.
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 Event 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
Down
The Start/Stop button was pressed for
1 second.
Bad Battery The battery level dropped below 2.7 V
(recorded even when the battery channel
has been disabled).
Good Battery The battery level rose to 2.9 V or above after
a Bad Battery event was marked.
Chan 1 Alarm
Tripped
A temperature alarm has tripped.
Chan 1 Alarm
Cleared
A temperature alarm has cleared. This event
also contains the value that was furthest out
of range for the sensor before the alarm
cleared.
New Interval The logger has entered or exited burst
logging mode.
Safe Shutdown The battery level dropped below 2.5 V; the
logger performs a safe shutdown.
Mounting the Logger
There are several ways to mount the logger using the materials
included:
•Use the four built-in magnets on the back of the logger to
mount it to a magnetic surface.
•Attach the Command strip to the back of the logger to
mount it a wall or other flat surface.
•Use the double-sided tape to affix the logger to a surface.
•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 failure with the internal logger clock
possibly due to condensation. Remove the battery immediately
and dry the circuit board. It is possible to dry the logger with a
hair dryer, but do not let the board get too hot. You should be
able to comfortably hold the board in your hand while drying it.
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.
Battery Information
The logger contains a 3V CR2032 battery (HRB-TEMP). Expected
battery life varies based on the temperature where the logger
is deployed, the logging interval, and other factors such as
whether the logger is in burst logging or statistics mode. A new
battery typically lasts 1 year with logging intervals greater than
1 minute. Deployments in extremely cold or hot temperatures,
a logging interval faster than 1 minute, or a sampling interval
faster than 15 seconds can impact battery life.
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 replace the battery:
1. Open the battery door on the top of the logger.
2. Use the tab on the built-in battery removal tool inside the
compartment to remove the battery.
Tab on battery-removal tool
Battery door
CR2032 battery;
positive side
facing out
Mounting
magnets
Mounting magnets

HOBO Temp Data Logger (UX100-001) Manual
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property of their respective companies.
16208-B
3. Place the circular battery removal tool around the negative
side of the new battery with the tab up. Insert the new
battery with the positive side facing out. The LCD should
display “HOBO” briefly after correctly installing the battery.
WARNING: Do not cut open, incinerate, heat above 85°C
(185°F), or recharge the lithium battery. The battery may
explode if the logger is exposed to extreme heat or conditions
that could damage or destroy the battery case. Do not dispose
of the logger or battery in fire. Do not expose the contents of
the battery to water. Dispose of the battery 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. Even with
the channel disabled, a bad battery event will still be recorded.