Description
The 781348-01 is a high-performance SC Express module, specifically the PXIe-4353, designed for precise temperature measurements using thermocouples. This module stands out with its capability to handle 32 differential analog input channels, making it suitable for extensive data acquisition tasks. The inclusion of 2 auto zero channels enhances measurement accuracy by compensating for any offset errors.
Moreover, the PXIe-4353 is equipped with 8 cold junction compensation channels, ensuring that temperature readings are not affected by the temperature difference at the junction points. This feature is critical for maintaining the accuracy of thermocouple measurements across a range of environmental conditions. The module offers an impressive isolation level of 300 V, protecting the device and data from high voltage transients.
With a maximum sample rate of 90 S/s, the PXIe-4353 facilitates rapid data collection, allowing users to capture transient temperature events with ease. The device supports a voltage measurement range of ±80 mV, suitable for various thermocouple types. Its differential input impedance is 20 mega-ohms, ensuring minimal loading on the measurement circuit.
The PXIe-4353 demonstrates excellent DC linearity, ranging from 20 ppm to 60 ppm, which guarantees precise and consistent measurements. Its Open Thermal Couple Detection (OTD) feature is software selectable, offering flexibility in handling disconnected thermocouples. This module exhibits an input current of 17 Nano-amperes with OTD enabled and 400 Pico-amperes with OTD disabled, minimizing the impact on the thermocouple circuit.
Compatibility with NI-DAQmx driver software ensures easy integration and use with various data acquisition systems, providing a comprehensive solution for temperature measurement applications.
| Specification | Detail |
|---|---|
| Part Number | 781348-01 |
| Category | SC Express |
| Model | PXIe-4353 |
| Description | PXIe-4353 32-Ch Thermocouple Input |
| Analog Input Channels | 32 (differential) |
| Auto Zero Channels | 2 |
| Cold Junction Compensation Channels | 8 |
| Isolation | 300 V |
| Maximum Sample Rate | 90 S/s |
| Voltage Measurement Range | ±80 mV |
| Differential Input Impedance | 20 mega-ohms |
| DC Linearity (typical to max) | 20 ppm to 60 ppm |
| Open Thermal Couple Detection (OTD) | Software Selectable |
| Input Current (OTD Enabled) | 17 Nano-amperes |
| Input Current (OTD Disabled) | 400 Pico-amperes |
| Driver Software | NI-DAQmx |
