Chapter 3: Using the HOBO U30 Station
HOBO U30 Remote Monitoring System User’s Guide
33
Connecting sensors to the Analog Sensor Port
Refer to the sensor documentation for terminal connection details and use
the pinout diagram below to connect a two- or three-wire sensor or
transducer to the module’s terminals. To make the connection, loosen the
screw for each pin on the connector, insert the appropriate wire, and tighten
the screw. The following example illustrates typical connections for a
voltage sensor and a current sensor that requires excitation.
Pin #
Left
Function
Pin
#
Right
Function
1 Shield
1 Shield
2
Channel 1 Signal
2
Channel 2 Signal
3
Channel 1 Return
3
Channel 2 Return
4
Excitation Voltage
4
Excitation Return
Chapter 3: Using the HOBO U30 Station
34
HOBO U30 Remote Monitoring System User’s Guide
Configuring channels
The channels in the Analog Sensor Port can be individually configured to
measure either current or voltage. The collected data can be scaled to
produce meaningful values for the properties being measured. Use
HOBOware Pro to configure each channel prior to launching, or create and
save different configurations to be loaded into the ports whenever needed. A
channel configuration consists of a channel name, measured property name,
scaling parameters, and excitation information, if applicable.
1.
Access the Configure Channel dialog in HOBOware Pro.
From
the Device menu in HOBOware Pro, select Configure
Modules/Ports. Select the port name to expand it, then select a port
channel and click Configure.
2.
Load an existing configuration, if available.
HOBOware Pro may
already have a default configuration for your sensor. Click the Load
button to select an existing configuration for the sensor.
3.
Review the loaded configuration, or create a new one.
The
Configure Channel dialog allows you to create or change the
channel name, scaling parameters, and other items. (Refer to the
HOBOware Pro User’s Guide
for details.)
4.
Review or set excitation power.
Make sure the excitation power
settings are correct for the intended sensor. See the next section for
more details on excitation.
5.
Save the new or changed configuration.
Skip this step if you are
using a default configuration without any changes.
6.
Click Configure
to complete the configuration.
Repeat these
steps for the other channel.
Important: Keep in mind that you cannot turn off both analog channels.
You can turn off excitation, and you can disable the second
logging channel, but you cannot disable the first logging
channel.
