HOBO U30 Station (NRC) User’s Guide
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The Analog Sensor Port (Optional)
The Analog Sensor Port is an easy-to-configure, flexible DC signal-
conditioning option that can be factory-installed in the HOBO U30 Station.
This two-channel port can accept, and provide excitation power to a wide
range of Onset and third-party sensors with 0–20 V or 0–20 mA output,
including devices with 4–20 mA current loop interface, and sensors with 0–
2.5, 0–5, and 0–10 V DC output.
The Analog Sensor Port features input protection and signal filtering, as well
as delta-sigma A/D conversion and factory calibration. This port features
extremely low power operation, resulting in long battery life for unattended
data logging applications. Precision electronics provide ±0.25% accuracy
from 50 mV to full scale (FS).
Sensors connected to this Analog Sensor Port can be configured in
HOBOware Pro software. Configuration options include channel names,
scaling parameters, and excitation power.
If your HOBO U30 Station does not have an Analog Sensor Port and you
wish to upgrade to one, contact Onset Computer Corporation for information
Functional block diagram
Analog Sensor Port Functional Block Diagram
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HOBO U30 Station (NRC) User’s Guide