Measurement Computing USB-2404-UI - Manual (Page 5)

5
Preface
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 …
Text presented in a box signifies additional information and helpful hints related to the subject matter you are
reading.
Caution! Shaded caution statements present information to help you avoid injuring yourself and others,
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: [email protected]
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
pk
or 60 VDC to earth ground. Take the following precautions if you connect
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
pk
/60 VDC), ensure that devices and
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.