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NI 9235, NI 9236

8-Channel Quarter-Bridge Strain Gage Modules

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  • 24-bit, simultaneous ADCs
  • 10 kS/s/ch dynamic strain measurements
  • Built-in voltage excitation for quarter-bridge sensors
  • 120 Ω strain gage measurements with the NI 9235
  • 350 Ω strain gage measurements with the NI 9236
  • 2 V excitation (NI 9235), 3.3 V excitation (NI 9236)


NI 9235 and 9236 quarter-bridge strain gage modules are designed for higher-channel-count, dynamic strain measurement systems based on NI CompactDAQ, CompactRIO, or other compatible C Series hardware. With eight simultaneous channels per module, you can make more measurements with a smaller, more channel-dense system. Simultaneous sampling is important for higher-speed acquisitions where it is necessary to compare results from different locations at a particular instant in time, such as impact tests.

For a bridge-based module with a higher sampling speed or the ability to implement full- and half-bridge as well as quarter-bridge measurements, try the NI 9237 C Series simultaneous bridge module.

Specifications Documents

View Data Sheet

Specifications Summary

General
Product Name NI 9235
Product Family Industrial I/O
Form Factor CompactDAQ , CompactRIO
Part Number 779993-01
Operating System/Target Windows
Measurement Type Strain/Bridge-based sensor
Isolation Type Ch-Earth Ground Isolation
RoHS Compliant Yes
Signal Conditioning Bridge completion , Voltage excitation , Anti-aliasing filter
Analog Input
Channels 0 , 8
Single-Ended Channels 0
Differential Channels 8
Resolution 24 bits
Sample Rate 10 kS/s
Bandwidth 4.5 kHz
Max Voltage 29.4 mV/V
Maximum Voltage Range -29.4 mV/V - 29.4 mV/V
Maximum Voltage Range Accuracy 0.03 mV/V
Simultaneous Sampling Yes
Excitation Voltage 2 V
Bridge Configurations Quarter Bridge
Analog Output
Channels 0
Digital I/O
Bidirectional Channels 0
Input-Only Channels 0
Output-Only Channels 0
Counter/Timers
Counters 0
Physical Specifications
Length 9 cm
Width 9 cm
Height 2.3 cm
I/O Connector 36-position spring terminal
Minimum Operating Temperature -40 °C
Maximum Operating Temperature 70 °C
Minimum Storage Temperature -40 °C
Maximum Storage Temperature 85 °C

NI 9235 Packages

To use the NI 9235 , you need all items in the diagram below. Select Option 1 if you already own a C Series System, or Option 2 if you do not already own a chassis, controller, or software.

Roll over the icons below to learn why you need each item in the system

C Series System
1 Connectivity Accessory NI 9235 Chassis PC/Controller Software
NI 9235 and Accessories Only
Quarter-Bridge Strain Gage Modules
779993-01 Qty $ 1,600 each
779994-01 Qty $ 1,600 each

Recommended Accessories
Connectivity Accessory -
Qty $ 31 each
 
Optional Accessories Hide
Qty $ 31 each
Qty $ 290 each

Package Price: $ 1,631
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Select a Platform and Configure a System
Create a complete system with the NI 9235 and its accessories. However, the NI 9235 is compatible with multiple C Series Platforms, NI CompactDAQ and CompactRIO. Please review the comparison information below and select a platform to begin configuring your system.
Configure System Configure System
NI CompactDAQ CompactRIO
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Mixed-Measurements

Customizable with a variety of chassis and module types.
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Deterministic & Rugged

Time-Critical Control & Monitoring
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Features NI CompactDAQ CompactRIO
USB, Wi-Fi, Ethernet Ethernet
-20 to 50 C -40 to 70 C
LabVIEW, C, C++, VB.NET, C#.NET LabVIEW, LabVIEW RT, LabVIEW FPGA only
PC Based Headless Embedded Controller (Standalone or network)
Laboratory - 30 g shock and 0.3 grms operational vibration Field Work - 50 g shock (Class I, Div 2 for Hazardous Locations)
The chassis provides rugged, modular housing for your controller (if using CompactRIO) and C Series modules. A high-performance backplane in the chassis contains the system's data, timing, and triggering buses.
The controller runs your application and interfaces with your C Series modules. If you are using the NI CompactDAQ platform, then a Personal Computer (PC) will act as the controller of your system. However, if the CompactRIO platform is used then an embedded real-time controller will be used instead.
You need software to interface with your hardware and to collect, analyze, present, and store your measurements. This device is compatible with a different programming languages depending on the platform used. If you are using the NI CompactDAQ platform then this device is compatible with LabVIEW, C/C++, Visual Basic, and .NET. However, if the CompactRIO platform is used then this device requires the LabVIEW FPGA Module (sold separately), the LabVIEW Real-Time Module (sold separately) and NI-RIO driver software (included with the hardware).

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