HOBO MX CO
2
Data Logger (MX1102A) Manual
LCD Symbol
Description
Press this button to view the latest statistics (if
enabled) or the sensor reading associated with a
tripped alarm.
Press this button for 5 seconds to manually
calibrate the CO
2
sensor (if enabled). “Calibrate”
and “CO
2
” will blink on the LCD during the 5-
minute manual calibration process.
These symbols show the maximum, minimum,
average, and standard deviation values most
recently calculated by the logger (if enabled).
Press the Next/Clear button for 1 second to cycle
through the available statistics and then back to
the current sensor reading (or to the alarm value if
applicable).
This is the farthest out-of-range sample displayed
during the logger deployment. Press the
Clear/Next button to view this reading. Press the
Clear/Next button again to cycle through any
statistics (defined above) and ultimately back to
the current sensor reading.
This is an example of a CO
2
reading in parts per
million.
If the logger is powered by battery:
A new
segment appears in the status bar every 15
seconds to indicate how long until the display will
be updated. In this example, there are 18
segments. This means it has been 4 minutes and
30 seconds since the CO
2
reading was updated on
the LCD. There are 30 seconds left (two segments)
before the reading will be updated on the LCD.
If
the logger is powered by USB cable:
The
segmented status bar is not displayed and the
current reading is updated every second.
This is an example of a temperature reading.
Temperature units are determined by the settings
in the software. To switch between Celsius and
Fahrenheit, change the units in the software and
then reconfigure the logger. Temperature readings
are updated on the LCD every 15 seconds if the
logger is battery-powered or every second if it is
USB-powered regardless of logging interval.
This is an example of an RH reading. RH readings
are updated on the LCD every 15 seconds if the
logger is battery-powered or every second if it is
USB-powered regardless of logging interval.
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 configure settings are being loaded onto the
logger from the software.
An error occurred while loading the configure
settings onto the logger from the software. Try
reconfiguring the logger.
The logger has been stopped with the software or
because the memory is full.
Notes:
•
You can disable the LCD screen in the software. When the
LCD is turned off for logging, you can still temporarily
view the LCD screen by pushing the Start/Stop or
Clear/Next button. The LCD will then remain on for 10
minutes.
•
When the logger is connected to the computer with the
USB cable, the LCD screen refreshes every second
regardless of logging interval.
•
When the logger has stopped logging, the LCD screen will
remain on with “STOP” displayed until the logger is
offloaded (unless the LCD screen was turned off in the
software). Once the logger has been offloaded, the LCD
will turn off automatically after 2 hours.
•
The LCD screen flashes “HELLO” when you page the
logger from the app (see
Getting Started with the App
).
•
The LCD screen flashes “CHIRP OFF” when an audible
alarm is cleared.
Setting up the Logger
Important:
The CO
2
sensor within this logger can experience
measurement drift during storage and shipment. It is strongly
recommended that a manual calibration be performed prior to
deploying the logger. Start the logger as described in this
section and perform a manual calibration. See
Calibrating the
Logger
for more details; follow the manual calibration steps in
that section. Improper manual calibration can cause incorrect
sensor readings.
Install the batteries in the logger. Use a Phillips-head
screwdriver to open the battery cover on the back of the logger
and insert four AA batteries observing polarity (see
Battery
Information
). Screw the cover back in place.
You can use both the app and HOBOware software with this
logger. The following sections provide an overview for using the
logger with both programs. You can switch back and forth
between the two programs (for example, configure the logger
in HOBOware, and read it out in the app). However, you can
only connect to one program at a time. You cannot use the app
with the logger while it is connected to HOBOware. If you
attempt to use the logger in HOBOware while it is connected to
the app, the device will not be found. If you want to connect to
the app after using the logger with HOBOware, you will need to
disconnect the USB cable once you are done with HOBOware.
Getting Started with the App
These steps provide an overview of setting up the logger with
the app.
1.
Download HOBOconnect to a phone or tablet from the App
Store® or Google Play™.
Download the app to a Windows computer
2.
Open the app and enable Bluetooth in your device settings
if prompted.
3.
Tap Devices and then tap the logger in the app to connect
to it.
If the logger does not appear or if it is having trouble
connecting, follow these tips:
•
Make sure the logger is within range of your mobile
device or computer. The range for successful wireless
communication is approximately 30.5 m (100 ft) with full
line-of-sight.
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