HOBO® MX CO
2
Logger (MX1102A) Manual
22504-F
The HOBO MX CO
2
data logger records carbon dioxide, temperature, and relative humidity (RH)
data in indoor environments using non-dispersive infrared (NDIR) self-calibrating CO
2
sensor
technology and integrated temperature and RH sensors. This Bluetooth® Low Energy-enabled
logger is designed for wireless communication and also supports a USB connection. Using the
HOBOconnect® app on your phone, tablet, or computer, or HOBOware® software on your
computer, you can easily configure the logger, read it out, and view plotted data. The logger can
calculate minimum, maximum, average, and standard deviation statistics and can be configured to
trip audible or visual alarms at thresholds you specify. In addition, it supports burst logging in
which data is logged at a different interval when sensor readings are above or below certain
limits. This logger also has a built-in LCD screen to display the current CO
2
level, temperature, RH,
logging status, battery use, memory consumption, and more.
Specifications
Temperature Sensor
Range
0° to 50°C (32° to 122°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
Drift
<0.1°C (0.18°F) per year
RH Sensor*
Range
1% to 90% RH (non-condensing)
Accuracy
±2% from 20% to 80% typical to a maximum of ±4.5% including
hysteresis at 25°C (77°F); below 20% and above 80% ±6% typical
Resolution
0.01%
Drift
<1% per year typical
CO
2
Sensor
Range
0 to 5,000 ppm
Accuracy
±50 ppm ±5% of reading at 25°C (77°F), less than 90% RH (non-
condensing) and 1,013 mbar
Warm-up Time
15 seconds
Calibration
Auto or manual to 400 ppm
Non-linearity
<1% of FS
Pressure Dependence
0.13% of reading per mm Hg (corrected via user input for
elevation/altitude)
Operating Pressure Range
950 to 1,050 mbar (use Altitude Compensation for outside of this
range)
Compensated Pressure
Range
-305 to 5,486 m (-1,000 to 18,000 ft)
Sensing Method
Non-dispersive infrared (NDIR) absorption
Response Time
Temperature
12
minutes to 90% in airflow of 1 m/s (2.2 mph)
RH
1 minute to 90% in airflow of 1 m/s (2.2 mph)
CO
2
1 minute to 90% in airflow of 1 m/s (2.2 mph)
Logger
Radio Power
1 mW (0 dBm)
Transmission Range
Approximately 30.5 m (100 ft) line-of-sight
Wireless Data Standard
Bluetooth Low Energy (Bluetooth Smart)
Logger Operating Range
0° to 50°C (32° to 122°F); 0 to 95% RH (non-condensing)
*Per RH sensor manufacturer data sheet
Note: The HOBO U-Shuttle (U-DT-1) is not compatible with this logger.
HOBO MX CO
2
Logger
MX1102A
Included Items:
•
Four AA 1.5 V alkaline
batteries
Required Items:
•
Mobile device with
HOBOconnect app,
Bluetooth, OS, iPadOS®, or
Android™, or a Windows
computer with a native BLE
adapter or supported BLE
dongle
OR
•
HOBOware 3.7.3 or later
and USB cable
Accessories:
•
Mounting kit with
mounting brackets, screws,
tie wraps, and Command™
strip
www.
.com
1.800.561.8187
