NI 9237 (DSUB Connector) – English Description
NI 9237 (DSUB) (Part Number: 378964-01) is a 4-channel, 24-bit C Series simultaneous bridge/strain input module with a 37-pin DSUB connector, designed for high-accuracy measurements from strain gauges, load cells, torque sensors, and other bridge-based transducers. It integrates complete signal conditioning, isolation, and A/D conversion for direct sensor connectivity in CompactDAQ or CompactRIO systems.NI
Full Product Description
The NI 9237 DSUB features programmable bridge completion for half-bridge and full-bridge sensors, with a ±25 mV/V input range optimized for high-resolution strain measurements. It provides internal excitation voltage (2.5 V, 3.3 V, 5 V, 10 V) and supports remote sense (RS) to compensate for lead resistance errors. The module includes built-in shunt calibration (100 kΩ) and offset nulling for precise system calibration.
With 24-bit delta-sigma ADCs, the NI 9237 DSUB delivers simultaneous sampling at up to 50 kS/s per channel, eliminating interchannel phase delay for dynamic, multi-axis measurements. It offers 60 VDC bank-to-bank isolation and 1,000 Vrms transient isolation, ensuring high common-mode noise rejection and electrical safety in industrial environments.NI
The 37-pin DSUB connector provides robust, industrial-grade I/O for all four channels, including analog input (AI±), excitation (EX±), remote sense (RS±), shunt calibration (SC), and TEDS (Transducer Electronic Data Sheet) support for automatic sensor identification and configuration.NI
Key Specifications
- Manufacturer: National Instruments (NI)
- Model: NI 9237 (DSUB)
- Part Number: 378964-01
- Channels: 4 analog input (simultaneous sampling)NI
- Resolution: 24-bit delta-sigma ADCdocs-be.ni.com
- Input Range: ±25 mV/Vdownload.ni.com
- Max Sample Rate: 50 kS/s per channeldownload.ni.com
- Bridge Completion: Programmable half-bridge, full-bridge
- Excitation Voltage: Internal (2.5, 3.3, 5, 10 V); External (2–10 V)
- Isolation: 60 VDC bank isolation, 1,000 Vrms transient isolationNI
- Connector: 37-pin DSUBNI
- TEDS Support: Yes (auto sensor recognition)NI
- Shunt Calibration: 100 kΩ on-board resistor
- Remote Sense: Yes (per channel)NI
- Operating Temp: -40 °C to 70 °CNI
- Power Requirement: 1.8 W typical, 2.2 W max
- Compatibility: CompactDAQ, CompactRIO
Applications
- Strain Measurement: Structural test, material stress analysis, load monitoringNI
- Force & Load: Load cells, press force, tension/compression testingNI
- Torque & Pressure: Rotary torque sensors, pressure transducersNI
- Industrial Automation: Robotics, machine monitoring, fatigue testingNI
- Aerospace & Automotive: Structural durability, component validation
On Apr 27, 2026 at 20:41:30 PDT, seller added the following information: