NI NI-9237 C Series 24-bit 4-Channel Strain and Wheatstone Bridge Input Module

Technical Specifications

Model:NI-9237

Brand:NI

Part No:779521-01(RJ50),780264-01(D-SUB)

Product type:C Series Strain & Wheatstone Bridge Analog Input Module

Resolution:24-bit delta-sigma ADC

Analog Input:4 fully differential synchronous channels

Input range:±25 mV/V

Sampling rate:50kS/s per channel

Excitation voltage:programmable 2.5V,3.3V,5V,10V,max 150mW

Isolation:60VDC channel-to-earth isolation

Bridge config:built-in half/full bridge completion,support 120Ω /350Ω strain gauge,quarter bridge requires external resistor

Overvoltage protection:±30V terminal protection

Connector:RJ50 or 37pin D-SUB

Dimension:90mm50mm19mm

Weight:149g(D-SUB),152g(RJ50)

Operating temperature:-40℃ ~ +70℃

Storage temperature:-55℃ ~ +85℃

Relative humidity:10~90% non-condensing

Certification:CE,UL

System compatibility

NI-9237 belongs to NI C series DAQ platform.It is compatible with CompactRIO and CompactDAQ chassis,supported by NI-DAQmx and LabVIEW,widely used for strain,force,pressure and torque measurement of load cells and strain gauges.It is spare part for legacy test equipment overhaul.

Function

NI-9237 is rugged C-series high precision bridge measurement module.It synchronously collects Wheatstone bridge sensor signals,provides programmable excitation voltage and internal bridge completion circuit.Remote sense function eliminates lead resistance error,suitable for material test,structural strain monitoring and component force characterization.

Installation

Insert NI-9237 into CompactRIO or cDAQ chassis slot,tighten front panel screw.Connect strain gauge or load cell wiring to RJ50/D-SUB connector.Install NI-DAQmx driver.Take ESD protection before installation.

Interface

‑RJ50 / 37pin D-SUB bridge signal connector

‑C series backplane edge connector

‑Module status LED indicators

Feature

NI-9237 classic NI strain bridge measurement module.Typical faults:connector pin oxidation,excitation circuit failure,ADC reading drift.Inspect sensor wiring and channel reading before replacement.

Diagnostic

Fault phenomenon:abnormal strain reading,zero drift,no bridge signal.Check sensor cable,bridge wiring,chassis backplane connection and NI-DAQmx driver status.

Product Brief

NI-9237 is NI C series 24-bit 4-channel synchronous bridge input module with 50kS/s sampling and programmable excitation voltage,supporting quarter/half/full bridge for strain gauge,load cell and torque transducer measurement in CompactRIO and cDAQ test systems.Mainly used for maintenance and replacement of old test equipment.ESD protection must be followed during handling.