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NI 9237

4-Channel, ±25 mV/V, 24-Bit Simultaneous Bridge Module

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  • 24-bit resolution, ±25 mV/V analog inputs with RJ50 connectors
  • 4 simultaneously sampled analog inputs; 50 kS/s maximum sampling rate
  • Programmable half- and full-bridge completion; up to 10 V internal excitation
  • Smart-sensor (TEDS) compatible
  • 1,000 Vrms transient isolation
  • -40 to 70 °C operating range
Data Sheet  |   Configure System popup

The National Instruments 9237 simultaneous bridge module for use with NI CompactDAQ and CompactRIO contains all the signal conditioning required to power and measure up to four bridge-based sensors simultaneously. The four RJ50 jacks provide direct connectivity to most torque or load cells and offer custom cable solutions with minimal tools. The high sampling rate and bandwidth of the NI 9237 offer a high-quality, high-speed strain or load measurement system with zero interchannel phase delay. With 60 VDC isolation and 1,000 Vrms transient isolation, the NI 9237 has high common-mode noise rejection and increased safety for both the operator and test system.

The NI 9237 can perform offset/null as well as shunt calibration and remote sense, making the module the best choice for strain and bridge measurements.

The NI 9944 and NI 9945 are accessories for use with quarter-bridge sensors. These accessories have a female RJ50 connector on one end and screw terminals on the other end. Purchase these accessories with a kit of RJ50 cables (qty 4).

For screw terminals without the quarter-bridge completion, purchase the NI 9949 and a kit of RJ50 cables (qty 4). This setup exposes all 10 pins for each channel as screw terminals.

Data Sheet | View Pricing and Purchasing Information »

View Diagram

Select one of the following options for product configuration and pricing:

Select Module and Accessories Below » Configure and Price a Complete CompactDAQ/CompactRIO System »
 
Module Accessories   Chassis, Controllers, Modules Software & Services
Step 1: Verify Device and Quantity Selection
Part
Number		 Description Est Ship Days Glossary Definition US Dollars
(change) 		Qty
779521-01 NI 9237 1 - 2 $ 1,149.00

Each NI 9237 requires: 1 Cable

NI 9237 Cable
Step 2: Select Cable
Part
Number		 Description Est Ship Days Glossary Definition US Dollars
(change) 		Qty
Shielded
194612-02 RJ50 Cable for 9944, 9945, and 9949, 2m (qty 4)
NI Recommended		 1 - 2 $ 29.00
195950-10 RJ50 Cable - 10-pin modular plug to pigtail wires (10m) 1 - 2 $ 19.00
195950-02 RJ50 Cable - 10-pin modular plug to pigtail wires (2m, qty 4) 1 - 2 $ 29.00
194612-10 RJ50 Cable - 10 pin modular plug to 10 pin modular plug (10m) 1 - 2 $ 19.00
Step 3: Select Connectivity Accessory
Part
Number		 Description Est Ship Days Glossary Definition US Dollars
(change) 		Qty
Screw Terminals
196809-01 NI 9949 - RJ50 to screw terminal adaptor (qty 4) 1 - 2 $ 179.00
194611-01 NI 9942 - 4-position connector kit for excitation connector of NI 9237 (qty 2) 5 - 10 $ 9.00
194738-01 NI 9944 - Quarter-bridge completion accessory (120 Ohm, qty 4) 1 - 2 $ 179.00
194739-01 NI 9945 - Quarter-bridge completion accessory (350 Ohm, qty 4) 1 - 2 $ 179.00
Step 4: Add to Cart or Get a Quote

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You have selected United States as the country where you will use the product(s) (change).

Specifications Documents


Specifications Summary

General 
Form FactorCompactDAQ, CompactRIO
Operating System / TargetWindows, Real-Time
Measurement TypeBridge-based sensor
Isolation TypeCh-Earth Ground Isolation
Analog Input 
Number of Channels4 DI
Sample Rate50 kS/s/ch
Resolution24 bits
Simultaneous SamplingYes
Maximum Voltage Range-0.25..0.25 mV_V
      Range Accuracy0.1125 mV/V
Minimum Voltage Range-0.25..0.25 mV_V
      Range Accuracy0.1125 mV/V
Signal ConditioningAnti-aliasing filter, Bridge completion, Voltage excitation
Excitation Voltage10 V
Bridge ConfigurationsFull Bridge, Half Bridge, Quarter Bridge
Analog Output 
Number of Channels0
Digital I/O 
Number of Channels0
Counter/Timers 
Number of Counter/Timers0
Timing/Triggering/Synchronization 
Triggers cDAQ ChassisNo

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System Assurance Programs

Reduce your setup time and total cost of ownership, and get a system you can use out of the box with National Instruments system assurance programs. System assurance programs include:

  • Installation and integration test of all individual hardware
  • Courtesy installation of system driver sets and application development environments
  • Three-year warranty and calibration coverage
  • Custom documentation plus a custom restore and startup utility

This service is only available for PXI, NI CompactRIO, and NI Compact FieldPoint systems.

Extended Warranties

National Instruments designs and manufactures all products to minimize failures, however unexpected failures can still occur. Extended warranties provide a fixed economical price at the time of system purchase, covering any repair costs for up to three years. In addition, they offer the following benefits:

  • Significant cost savings compared to individual repair incidents
  • Fault location, diagnostics, and repair by NI any time the system product fails
  • All parts and labor costs covered as well as any adjustments needed to restore the hardware to manufacturing specifications

For more information about your warranty options:

Calibration

NI recognizes the need to maintain properly calibrated devices for high-accuracy measurements. NI provides manual calibration procedures, services to recalibrate your products, and automated calibration software to calibrate many NI measurement products.

Training

NI training is the fastest, most certain route to productivity with NI tools and successful application development.

Repair Services

Return your registered product under warranty at no additional labor and parts cost. NI offers fault location, diagnostics, and repair any time the system fails as well as any adjustments needed to restore the hardware to manufacturing specifications.

Technical Support

ni.com/support

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