National Instruments (NI) has introduced its data acquisition (DAQ) modules with integrated signal conditioning for scalable, high-performance measurements on PXI Express.
According to NI, the SC Express family will provide accuracy, high data throughput and synchronisation for measuring strain gauges, bridge-based transducers, thermocouples and high-voltage analogue inputs.
With a smaller footprint, simplified cable management and new software features for automatic synchronisation, the SC Express modules make it easy for engineers to set up and program high-channel-count sensor measurement systems.
The NI PXIe-4330 24-bit simultaneous bridge input module offers 0.02 per cent accuracy and 25 kS/s per channel sample rate for high-performance strain, load, force and torque measurements. The included driver software ensures tight synchronisation across multiple modules and chassis with inter-channel skews as low as 5 ppb. The 8-channel bridge input module can scale to a 136-channel system in a single chassis and thousands of channels when synchronising across multiple chassis. The NI PXIe-4330 module is ideal for high-channel-count structural test applications, such as wind tunnels, bridge monitoring and crash tests.
With the NI PXIe-4353 thermocouple module, engineers can measure temperatures with 0.30 degrees Celsius accuracy on 32 channels. The isothermal terminal block minimises error, making it possible for the nearby cold-junction compensation (CJC) thermistors to measure at the thermocouple junctions. The 32-channel thermocouple module can scale to a 544-channel system in a single chassis and thousands of channels when synchronizing across multiple chassis. The increased accuracy and scalable platform make the NI PXIe-4353 module is well-suited for precision measurements from a single channel to large systems for applications, such as fuel cell testing and monitoring thermal chambers.
The NI PXIe-4300 high-voltage isolated analogue can measure up to 300 V with simultaneous sampling. With a 16-bit ADC per channel and a 250 kS/s per channel sampling rate, the NI PXIe-4300 module can stream 4 MB/s per module and 68 MB/s in a single chassis.
This 8-channel analogue input module can scale to a 136-channel system in a single chassis and thousands of channels when synchronising across multiple chassis. The ability to measure 300 V with CAT II channel-to-channel isolation makes the NI PXIe-4300 module ideal for automotive testing, such as fuel cell and battery tests.