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About this User's Guide
What you will learn from this user's guide
This user's guide describes the Measurement Computing USB-2404-UI data acquisition device and lists device
specifications.
Conventions in this user's guide
For more information about ...
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damaging your hardware, or losing your data.
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Where to find more information
Additional information about USB-2404-UI hardware is available on our website at www.mccdaq.com. You
can also contact Measurement Computing Corporation by phone, fax, or email with specific questions.
Phone: 508-946-5100 and follow the instructions for reaching Tech Support.
Fax: 508-946-9500 to the attention of Tech Support
Email: techsupport@mccdaq.com
Hazardous voltages
You can connect hazardous voltages to the USB-2404-UI device's spring terminals. A hazardous voltage is a
voltage greater than 42.4 V
hazardous voltages to the USB-2404-UI:
Caution! Ensure that hazardous voltage wiring is performed only by qualified personnel adhering to local
electrical standards.
Do not mix hazardous voltage circuits and human-accessible circuits on the same device.
Make sure that devices and circuits connected to the USB-2404-UI are properly insulated from
human contact.
When device terminals are hazardous voltage LIVE (>42.4V
circuits connected to the USB-2404-UI are properly insulated from human contact. A high voltage
screw terminal backshell (ACC-176) must be installed when using hazardous voltages to ensure
that the terminals are not accessible.
Hazardous locations
The USB-2404-UI is not certified for use in hazardous locations.
Distributed by MicroDAQ.com, Ltd.
or 60 VDC to earth ground. Take the following precautions if you connect
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www.MicroDAQ.com
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Preface
(603) 746-5524
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