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.
Bridge completion
,
Voltage excitation
,
Anti-aliasing filter
Analog Input
Channels
4
,
0
Single-Ended Channels
0
Differential Channels
4
Resolution
24 bits
Sample Rate
50 kS/s
Max Voltage
25 mV/V
Maximum Voltage Range
-25 mV/V
-
25 mV/V
Maximum Voltage Range Accuracy
0.038 mV/V
Simultaneous Sampling
Yes
Excitation Voltage
5 V
,
3.3 V
,
2.5 V
,
10 V
Bridge Configurations
Half Bridge
,
Full Bridge
,
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
2.3 cm
I/O Connector
RJ50
Minimum Operating Temperature
-40 °C
Maximum Operating Temperature
70 °C
Minimum Storage Temperature
-40 °C
Maximum Storage Temperature
85 °C
NI 9237 Packages
To use the NI 9237 , 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
Create a complete system with the NI 9237 and its accessories. However, the NI 9237 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.
Laboratory - 30 g shock and 0.3 grms operational vibration
Field Work - 50 g shock (Class I, Div 2 for Hazardous Locations)
Since your RJ50 cable does not have direct connectivity, you need an adapter to act as an interface between your sensors/signals and your device.
You need a cable to transmit signals between your device and your signal connections on your adapter.
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).
You have selected United States as the country where you will use the product(s)
(change).
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
Extended warranty and calibration coverage for up to five years
Custom documentation plus a custom restore and startup utility
This service is only available for PXI, NI CompactRIO, and NI Compact FieldPoint systems.
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
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.
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.
