NI PXI-4351 185450D-01 Measurement Module

NI PXI-4351 with part number 185450D-01 is a high-precision PXI bus measurement module from National Instruments. It adopts 24-bit Sigma-Delta ADC, supporting multi-type sensor measurement including RTD, thermistor, thermocouple and voltage signal for laboratory and industrial test systems.

This module integrates built-in precision current source for resistance measurement, with low leakage circuit and digital filtering to suppress noise. It is compatible with LabVIEW for fast program development, widely used as spare parts for data logging and automated test bench maintenance and renovation projects.

Main Specifications

1. Brand: NI (National Instruments); Model: PXI-4351; Part No:185450D-01; Type: PXI Precision Measurement Module
2. Resolution:24-bit Sigma-Delta ADC; Channels:16 differential / 8 single-ended input channels
3. Measurement: Voltage, RTD, thermistor, thermocouple and resistance up to 15kΩ
4. Built-in: 1mA precision current source; Digital filtering and auto-zero correction function
5. Bus: PXI bus interface; Software: Fully compatible with LabVIEW and NI DAQmx driver
6. Operating Temperature: -40℃ ~ +85℃; Standard 3U PXI card form factor
7. Supply Status: Industrial spare high-precision data acquisition module for test system overhaul and replacement

Core Functions

1. High precision multi-channel acquisition for temperature and analog voltage signals from various sensors.
2. Integrated precision current source to realize accurate resistance measurement for RTD and thermistor.
3. Low leakage design plus digital filtering to reduce noise and improve measurement stability.
4. Auto-zero calibration function to offset drift error and maintain long-term measurement accuracy.
5. PXI bus synchronous triggering, easy to integrate into multi-module automated test systems.
6. 3U PXI standard size, simple installation and quick replacement in PXI chassis maintenance work.

Application Scenarios

1. High-precision temperature and voltage measuring unit for NI PXI modular test and measurement systems.
2. Fault module replacement and routine maintenance of existing NI PXI data acquisition platforms.
3. Thermal cycling test, electronic product temperature monitoring, laboratory data logging and industrial bench test projects.
4. Emergency replacement for module failure to restore multi-channel high-precision sensor data acquisition.
5. Spare parts stocking for maintenance teams supporting NI PXI and LabVIEW test automation systems.
6. Aftermarket spare supply for test cabinet upgrade and high precision measurement system reconstruction.

FAQ

1. Q: What is NI PXI-4351 185450D-01 used for?
   A: It is a 24-bit high precision PXI module, used for multi-channel temperature, voltage and resistance measurement with RTD, thermocouple and thermistor sensors.
2. Q: What are typical module failure symptoms?
   A: Measurement reading drift, channel no response, unstable temperature value, communication error with PXI controller.
3. Q: How to complete commissioning and diagnosis?
   A: Insert module into PXI chassis, connect sensor signals, install NI DAQmx driver, configure channels and test readings via LabVIEW software.