The National Instruments PCI-4351 is a versatile Multifunction Data Acquisition (DAQ) device designed for precise temperature measurements, catering to a wide range of applications including thermocouples, RTDs, thermistors, chromatography, and resistance monitoring. This device features 16 differential or 14 thermocouple analog input channels, supported by a 24-bit analog-to-digital converter that ensures superior measurement accuracy. It supports voltage ranges up to ±15 V and digital input and output through 8 TTL-compatible lines, making it ideal for comprehensive data collection tasks.

The PCI-4351 demonstrates high precision with ±0.42 °C for J-type thermocouples, ±0.12 °C RTD precision, and ±0.03 °C for thermistors. Additionally, it incorporates open thermocouple detection for each channel, enhancing reliability during operation. The device is equipped with noise rejection capabilities and a precise current source for thermistor and RTD excitation. A software-selectable ground feature allows users to measure both ground-referenced and floating signals conveniently.

The PCI-4351 has a compact form factor of 4.4 x 7.4 inches and connects via a 68-pin male I/O connector, ensuring secure and reliable connectivity. It requires a power supply of 480 mA at +5 V and has operational specifications that include a temperature range of 0 °C to 55 °C and a storage temperature range of -20 °C to 70 °C, with a non-condensing humidity tolerance up to 80% RH. For software compatibility, the NI 4351 instrument driver supports various platforms such as LabVIEW, LabWindows/CVI, Microsoft Visual Basic, and VI Logger. The device comes with a three-year warranty, and comprehensive user and maintenance manuals are available for download. For pricing information, please consult a sales representative.