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HOBO MX2300 Series Data Logger Manual 

1-508-759-9500 (U.S. and International) 6 

www.onsetcomp.com 

1-800-LOGGERS (U.S. only) 

details on plotting and viewing the event. In addition, if 
you stop the logger with a button push while in burst 
logging mode, a New Interval event is automatically 
logged and the burst condition is cleared, even if the 
actual high or low condition has not cleared. 

Statistics Logging 

During fixed logging, the logger records data for enabled 
sensors and/or selected statistics at the logging interval 
selected. Statistics are calculated at a sampling rate you specify 
with the results for the sampling period recorded at each 
logging interval. You can log the following statistics for each 
sensor: 

 

The maximum, or highest, sampled value 

 

The minimum, or lowest, sampled value 

 

An average of all sampled values 

 

The standard deviation from the average for all sampled 
values 

For example, a logger is configured with both the temperature 
and RH sensors enabled, and the logging interval set to 5 
minutes. The logging mode is set to fixed logging with all four 
statistics enabled and with a statistics sampling interval of 30 
seconds. Once logging begins, the logger measures and records 
the actual temperature and RH sensor values every 5 minutes. 
In addition, the logger takes a temperature and RH sample 
every 30 seconds and temporarily stores them in memory. The 
logger then calculates the maximum, minimum, average, and 
standard deviation using the samples gathered over the 
previous 5-minute period and logs the resulting values. When 
downloading data from the logger, this results in 10 data series 
(not including any derived series, such as dew point): two 
sensor series (with temperature and RH data logged every 5 
minutes) plus eight maximum, minimum, average, and standard 
deviation series (four for temperature and four for RH with 
values calculated and logged every 5 minutes based on the 30-
second sampling). 

To log statistics: 

1.

 

Tap Devices. Press the Start/Stop button 

on the logger

 to 

wake it up, if necessary. 

2.

 

Tap the logger tile in the app to connect to the logger and 
tap Configure & Start. 

3.

 

Tap Logging Mode and select Fixed Logging Mode. 

4.

 

Tap to turn on Statistics. 

Note:

 Fixed Logging Mode records sensor measurements 

taken at each logging interval. The selections you make in 
the Statistics section add measurements to the recorded 
data. 

5.

 

Select the statistics you want the logger to record at each 
logging interval: Maximum, Minimum, Average, and 
Standard Deviation (average is automatically enabled when 
selecting Standard Deviation). Statistics are logged for all 
enabled sensors. In addition, the more statistics you record, 
the shorter the logger duration and the more memory is 
required. 

6.

 

Enter a value in Statistics Sampling Interval to use for 
calculating statistics. The rate must be less than, and a 
factor of, the logging interval. For example, if the logging 

interval is 1 minute and you select 5 seconds for the 
sampling rate, the logger takes 12 sample readings between 
each logging interval (one sample every 5 seconds for a 
minute) and use the 12 samples to record the resulting 
statistics at each 1-minute logging interval. Note that the 
faster the sampling rate, the greater the impact on battery 
life. Because measurements are being taken at the statistics 
sampling interval throughout the deployment, the battery 
usage is similar to what it would be if you had selected this 
rate for the normal logging interval. 

Setting a Password 

You can create an encrypted password for the logger that is 
required if another device attempts to connect to it. This is 
recommended to ensure that a deployed logger is not 
mistakenly stopped or purposely altered by others. This 
password uses a proprietary encryption algorithm that changes 
with every connection. 

To set a password: 

1.

 

Tap Devices. Press the Start/Stop button 

on the logger

 to 

wake it up, if necessary. Tap the logger tile in the app to 
connect to it. 

2.

 

Tap Lock Logger. 

3.

 

Type a password and then tap Set. 

Only the device used to set the password can then connect to 
the logger without entering a password; all other devices are 
required to enter the password. For example, if you set the 
password for the logger with your tablet and then try to 
connect to the logger later with your phone, you must enter 
the password on the phone but not with your tablet. Similarly, 
if others attempt to connect to the logger with different 
devices, they are also required to enter the password. To reset 
a password, press the circle on the logger for 10 seconds or 
connect to the logger and tap Manage Password and tap Reset. 

Downloading Data From the Logger 

To download data from the logger: 

1.

 

Tap Devices. Press the circle 

on the logger

 to wake it up, if 

necessary. Tap the logger tile in the app to connect to the 
logger. 

2.

 

Tap Download Data. The logger downloads data to the 
phone, tablet, or computer.  

3.

 

Once the download is complete, tap Done to return to the 
previous page or tap Export and Share to save the file in the 
specified format. 

4.

 

When the export file has successfully been created, tap 
Done to return to the previous page or tap Share to use 
your device’s usual modes of sharing. 

You can also upload data automatically to HOBOlink, Onset’s 
web-based software, using the app or the MX gateway. For 
details, see the HOBOconnect User Guide and see the HOBOlink 
help for details on working with data in HOBOlink. 

Logger Events 

The logger records the following internal events to track logger 
operation and status. You can view events in exported files or 
plot events in the app. 

Содержание MX2300 Series

Страница 1: ...ow 20 C 4 F or above 95 RH may temporarily increase the maximum RH sensor error by an additional 1 Accuracy 2 5 from 10 to 90 typical to a maximum of 3 5 including hysteresis at 25 C 77 F below 10 RH...

Страница 2: ...rval of 1 minute and Bluetooth Always On disabled Faster logging intervals and statistics sampling intervals burst logging remaining connected with the app excessive downloads and paging may impact ba...

Страница 3: ...uter from www onsetcomp com products software hoboconnect 2 Open the app and enable Bluetooth in the device settings if prompted 3 Press the button on the logger to wake it up 4 Tap Devices and then t...

Страница 4: ...ays after logging begins Stop When Memory Fills The logger continues recording data until the memory is full 8 Tap Pause Options then select Pause On Button Push to specify that you can pause the logg...

Страница 5: ...low limit This means the logger records data every 5 minutes as long as the temperature remains between 85 F and 32 F Once the temperature rises above 85 F the logger switches to the faster logging r...

Страница 6: ...ion and the more memory is required 6 Enter a value in Statistics Sampling Interval to use for calculating statistics The rate must be less than and a factor of the logging interval For example if the...

Страница 7: ...r facing down If the sensor is being deployed in an RS3 B solar radiation shield mount it vertically as shown below When deploying a logger with external sensors MX2302A MX2303 and MX2304 mount the lo...

Страница 8: ...cations However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be dete...

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