Chapter 3: Using the HOBO U30 Station
HOBO U30 Remote Monitoring System User’s Guide
27
Launch Configuration
Feature
Description
Note:
The HOBO U30 Station will continue to
contact HOBOlink once the memory is full and
logging has stopped, but there will not be any new
data uploaded and current readings will no longer
be updated.
Force Relaunch on
Next Connection
Select this option when you want to start a
completely new launch the next time the HOBO
U30 Station connects to HOBOlink.com.
You must
select this option when new sensors are
installed, otherwise the new sensors will not be
recognized.
Full Readout Upon
Power Reset
Select this option if you want an immediate
complete readout of the HOBO U30 Station after
unplugging the battery or other power interruption.
This feature may be useful if you have a system
failure and you are unable to bring a computer into
the field to perform a direct USB download. This
option is very data intensive and may not be
available with all levels of service. Check the
details of your service plan.
Setting up the Readout configuration
The HOBO U30 Station connects to HOBOlink.com at a regular interval that
you select (for example, every 2 hours) and reads out all the data since the
last time the data was read out. The data is saved in a file and displayed as
graphs in HOBOlink.com. You can also download data files and view them
in HOBOware Pro for further data plotting and analysis. Click Readout
Configuration in HOBOlink.com to change the connection interval.
To preserve battery power and/or minimize connection charges, enable the
Night Mode feature. This allows you to set up two readout schedules with
more frequent connections during the day and less frequent connections
during the night. (Or, you could set the faster rate to be during the night for
applications such as frost monitoring.) From Readout Configuration in
HOBOlink.com, select Night Mode and enter the starting and ending time
when you want the system to use a different schedule, and the connection
rate for this time period.
Chapter 3: Using the HOBO U30 Station
28
HOBO U30 Remote Monitoring System User’s Guide
Configuring alarms
You can set two types of alarms for the HOBO U30 Station: system alarms
and sensor alarms. Click Go To Alarms in HOBOlink.com to access these
features.
System alarms
Sensor alarms
HOBOlink.com can send you an
email or text message when:
There is a sensor failure
The memory is running low
The battery is low (4.05 volts,
which is approximately 3/8th of
capacity remaining)
Set an alarm to trip when a reading is
above or below a level you select, or
outside a normal operating range
that you set for a specific number of
readings.
Using HOBOlink.com, you can
configure the HOBO U30 Station to
do the following when the alarm is
tripped:
Activate the relay (close it)
Deactivate the relay (open it)
Pulse the relay
In addition, you can set up
HOBOlink.com to send you an email
and/or a text message when the
alarm is tripped.
Sensor alarms and system alarms behave slightly differently. A sensor alarm
is tripped when a logged (not sampled) data point exceeds the alarm limits
configured in HOBOlink. Sensor alarms reset automatically once the alarm
condition goes away.
System alarms, however, do not automatically reset. When a system alarm
occurs, all previously configured system alarms are disabled, awaiting your
corrective action to fix the problem causing the alarm. Therefore, if a system
alarm is tripped, do the following:
1.
Take corrective action as described in the following chart.
2.
Relaunch the HOBO U30 Station (select Force Relaunch on
Next Connection under Launch Configuration in
HOBOlink.com).
3.
Reset the system alarms in HOBOlink as they were before the
alarm was tripped.
