User Manual

HOBO 4-Channel Thermocouple Data Logger (UX120-014M) Manual
1-800-LOGGERS (564-4377) • 508-759-9500
www.onsetcomp.com • [e-mail]
© 2013–2015 Onset Computer Corporation. All rights reserved. Onset, HOBO, and HOBOware are
trademarks or registered trademarks of Onset Computer Corporation. All other trademarks are the
property of their respective companies.
17031-D
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.
Chan <#> Alarm
Tripped
A temperature alarm has tripped on that
channel.
Chan <#> Alarm
Cleared
A temperature alarm has cleared on that
channel. 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 1.85 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. An optional protective case (CASE-4X-2) is
available for this logger. 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 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.
Battery Information
The logger requires two user-replaceable AAA 1.5V alkaline or
optional lithium batteries for operation at the extreme ends of
the logger operating range. Expected battery life varies based
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
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. 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 batteries.
3. Insert two new batteries observing polarity.
4. Reinsert the battery door and snap it back into place.
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.
Battery door
Mounting
magnet
Mounting
magnets