Hobo MX2001-0 Series, Manual

HOBO MX Water Level Logger (MX2001-0x) Manual

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•

On Save.

 Logging begins immediately after configuration 

settings are saved. 

•

On Next Interval. 

Logging begins at the next even 

interval as determined by the selected logging interval 
setting. 

•

On Date/Time.

 Logging begins at a date and time you 

specify. Specify the date and time. 

Note:

 The Reference Water Level you enter is associated 

with the first logged data point;  make sure the logger is 
deployed in location when it starts logging.  

7.

Tap Stop Logging and specify when logging ends. 

•

Never Stop (Overwrites Old Data). 

The logger does not 

stop at any predetermined time. The logger continues 
recording data indefinitely, with newest data overwriting 
the oldest. 

•

On Date/Time.

 The logger stops logging on a specific 

date and time that you specify. 

•

After.

 Select this if you want to control how long the 

logger should continue logging once it starts. Choose the 
amount of time you want the logger to log data. For 
example, select 30 days if you want the logger to log data 
for 30 days after logging begins. 

•

Stop When Memory Fills. 

The logger continues recording 

data until the memory is full. 

8.

Tap Logging Mode. Select either Fixed or Burst logging. 
Fixed logging records data for all enabled sensors and/or 
selected statistics at the logging interval selected (see 

Statistics Logging

 for details on choosing statistics options). 

Burst mode logs at a different interval when a specified 
condition is met. See 

Burst Logging

 for more information.  

9.

Upload Data Via. Determines how data is uploaded to 
HOBOlink. Choose Gateway or HOBOconnect. 

10.

Enable/Disable Sensors. You must enable differential 
pressure to calculate water level. Enable temperature to log 
absolute pressure. In addition, you must enable 
temperature if you select the water density option “Fresh 
Water adjusted for Temp” because the temperature values 
are used to calculate the water density. 

11.

Tap Start to save the settings and start logging. 

Logging begins based on the specified settings. Press the start 
button if you set it up to start logging with a button push. See 

Deploying and Mounting the Logger

 for details on mounting 

and see 

Downloading Data From the Logger 

for details on 

downloading. You can update the reference water level or 
water density during the deployment if necessary (see 

Updating the Reference Water Level and Water Density

). 

Setting the Reference Water Level and Water Density 

The reference water level is the current water level when the 
logger starts logging; make sure the sensor is in position when 
logging starts. Make this reading as accurate as possible, since 
this reading is used to calibrate the water level data, and adjust 
it to your reference . See section 5, starting on page 7 for 
information on how to measure and enter the reference water 
level. The logger must be logging for you to enter the reference 
water level and density. 

1.

Tap Devices. 

2.

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

3.

Tap Calibrate. 

4.

Enter the new Reference Water Level corresponding to the 
first value logged in the current deployment and select the 
Units. 

5.

Select the Water Density or enter a specific density in the 
Manual Input field. 

6.

Select Water Density Units. 

7.

Tap Save. Changes take effect immediately. This also 
creates Reference Water Level and Water Density events 
in the data file. 

Notes:

 You can also edit the water parameters after you have 

downloaded data from the logger by tapping 

 when 

viewing a data file. See Using the Data File Viewer for details. 

•

When the logger is stopped, the water level reading shown 
while connected to the logger does not reflect any reference 
water level and water density values you have entered (it 
reverts to a reference water level of zero and a water density 
of Fresh Water Adjusted for Temperature). Once logging 
begins, the readings shown in the app are based on the 
reference water level and water density you entered.

•

When the logger is connected to the app: 

Tap this: 

To do this: 

Specify logger settings and save them to the 
logger to start logging. See 

Configuring the 

Logger

. 

Tap to view live data. 

Mark the logger as a favorite. You can then filter 
the list of devices to show only loggers marked as 
favorites. 

Calibrate the logger. Allows you to set the 
Reference Water Level and Water Density. 

Start logging if the logger is configured to start 
On Button Push. See 

Configuring the Logger

. 

Stop logging data (this overrides any Stop 
Logging settings described in 

Configuring the 

Logger

). 

Download logger data. See 

Downloading Data 

From the Logger

. 

Set a password for the logger that is required 
when another mobile device attempts to connect 
to it. To reset a password, press the button on 
the logger for 10 seconds or tap Manage 
Password and tap Reset. 

Update the firmware on the logger. A logger 
download is completed automatically at the 
beginning of the firmware update process.  

Important:

 Before updating the firmware on the 

logger, check the remaining battery level and 
make sure it is no less than 30%. Make sure you 
have the time to complete the entire update 
process, which requires that the logger remains 
connected to the device during the upgrade.