User Manual

HOBO 4-Channel Thermocouple Data Logger (UX120-014M) Manual
1-800-LOGGERS 3 www.onsetcomp.com
Thermocouple Ports: Use these ports (not visible in the
diagram) to connect thermocouple sensors (see Connecting
Thermocouple Sensors).
USB Port: Use this port 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.
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.
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 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. Note that if an
alarm symbol appears next to the “CH5 amb”
symbol, it applies to the fourth thermocouple
channel and not the internal 10K thermistor
(temperature) channel, which does not support
alarm functionality.
This is the channel number associated with the
LCD Symbol Description
thermocouple reading (channel 1 for this
example). Up to four channels are visible at one
time. Press the Alarm/Stats button for 1 second to
cycle through any available statistics and then to
the fifth channel, which is the ambient
temperature (“CH5 amb”) being logged by the
internal 10K thermistor (if enabled in HOBOware).
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 logger is currently logging.
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.
These symbols show the maximum, minimum,
average, and standard deviation values most
recently calculated by 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 to
the channel 5 thermistor reading (If enabled), and
then ultimately back to the current thermocouple
readings (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, then to the channel 5
thermistor reading (if enabled), and ultimately
back to the current thermocouple readings.
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.
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 while logging
regardless of the logging interval selected in HOBOware.
If you choose a logging interval less than 15 seconds, the