HOBO MX Temp/RH Data Logger (MX1101) Manual
1-508-759-9500 (U.S. and International) 8
www.onsetcomp.com
1-800-LOGGERS (U.S. only)
To plot events, tap HOBO Files and select a file to open.
Tap
(if applicable) and tap
. Select the events you want
to plot and tap OK.
Internal Event Name
Definition
Host Connected
The logger was connected to the mobile
device.
Started
The Start/Stop button was pressed to begin
or resume logging.
Stopped
The logger received a command to stop
recording data (from the app or by pushing
the Start/Stop button).
Button Up/Button
Down
The Start/Stop button was pressed for
1 second.
Chan <#> Alarm
Tripped
A sensor alarm has tripped; <#> is the sensor
number, where 1 is temperature and 2 is RH.
Chan <#> Alarm
Cleared
A sensor alarm has cleared; <#> is the sensor
number, where 1 is temperature and 2 is RH.
This event also contains the value that was
furthest out of range for the sensor before
the alarm cleared, which is only available in a
shared or exported file.
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 magnets on the back of the logger case to
mount it to a magnetic surface.
•
Attach Command strips to the back of the logger to
mount it a wall or other flat surface. Double up the two
Command strips so that they protrude past the magnets.
•
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.
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” on onsetcomp.com.
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
on the ambient temperature where the logger is deployed, the
logging or sampling interval, frequency of offloading and
connection to the mobile device, number of channels that are
active, audible alarms duration, use of burst mode or statistics
logging, 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.
Note:
Make sure the batteries installed have flat negative
terminals. There should be no indent in the bottom of the
batteries. Batteries with indents in the negative terminals may
become loose and prevent proper operation.
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:
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 battery 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.
Only use batteries
with flat negative
terminals
Do not use batteries with an
indent in the negative terminal
Battery door
Mounting
magnet
Mounting
magnets
