Strain- and Bridge-Based Measurements
NI USB-9237
• Full-, half-, and quarter-bridge
(120/350
Ω)
completion
1
• Bus powered
• Built-in excitation up to 10 V
• Up to 50 kS/s/ch sample rate
• Simultaneous acquisition with
four ADCs
• Quick sensor connect with
RJ50 connectors
• TEDS (IEEE 1454.1) compatible
• External excitation input through analog
bridge (optional)
1
Quarter
Compatible Software
•
•
•
•
•
•
LabVIEW
LabWindows
™
/CVI
Measurement Studio
Visual Basic 6.0
C# and Visual Basic .NET
ANSI C/C++
Measurement Services
Software (included)
• NI-DAQmx driver software
• Measurement & Automation Explorer
configuration utility
• LabVIEW SignalExpress LE
data-logging software
bridge requires accessory.
Operating Systems
• Windows Vista/XP/2000
Overview
The National Instruments USB-9237 combines performance and
portability by making the NI 9237 C Series module compatible with the
bus-powered USB carrier for C Series modules. This module is ideal for
laptop applications because the USB port on the laptop powers all
acquisition and sensor excitation.
Connectivity
The USB-9237 uses four standard RJ50 connectors for rapid sensor
connection. You can add an RJ50 connector to any sensor using a
crimping tool, making sensor removal and insertion as easy as
connecting a PC to a network. For screw-terminal connectivity, the
NI 9949 accessory kit converts from RJ50 to 10 screw terminals. RJ50
cable kits are available in quantities of four 2 m cables and one 10 m
cable. For custom sensor wiring, cable kits are available with an RJ50
connector on one end and 10 signal wires on the other.
High-Speed Measurements
The NI USB-9237 module can take measurements at up to 50 kS/s on
four channels simultaneously and continuously stream the data back
over a Hi-Speed USB interface to serve applications from static load
or fatigue testing to high-speed fracture tests.
Software
The USB-9237 is shipped with the standard NI-DAQmx bundle that
includes Measurement & Automation Explorer (MAX) for configuration
and testing; LabVIEW SignalExpress LE for out-of-the-box measurements,
logging, and data display; and an API/driver for languages such as
LabVIEW, ANSI C, C#, Visual Basic .NET, Visual Basic 6.0, Measurement
Studio, and LabWindows/CVI.
Sensor Compatibility
With full-, half-, and quarter-bridge completion, the USB-9237 can
measure a variety of load, force, and torque cells as well as some
pressure transducers and most strain gages.
1
Safety Isolation
• 30 V of overvoltage protection
• 60 V of CAT I channel-to-earth ground isolation
• 1000 V of transient withstand isolation
1
Quarter
bridge requires accessory.
NI [ NATIONAL INSTRUMENTS CORPORATION ]
