The National Instruments PCI-6238 is a sophisticated multifunction data acquisition (DAQ) device from the M Series, designed for robust industrial applications. This device excels in measuring and controlling process voltages and currents from a variety of analog and digital sensors, transducers, and actuators, including pumps, motors, and valves. A key feature of the PCI-6238 is its current input bank isolation, which enhances transient immunity and reduces noise interference, effectively mitigating ground loops. The device offers eight differential current input channels with a 16-bit analog-to-digital converter (ADC), operating at a maximum sampling rate of 250 kS/s and accommodating input current ranges of up to +20 mA. The input channels can handle overcurrent levels of +40 mA, while maintaining a maximum impedance of 100 Ω.

Additionally, the PCI-6238 is equipped with two analog current output channels capable of dual sampling, achieving 500 kS/s for a single channel and 450 kS/s per channel when dual-channel sampling is employed. The analog I/O channels feature FIFO buffers, with an input buffer size of 4095 samples and an output buffer size of 8191 samples. The device also includes ten programmable function interface (PFI) digital channels, composed of six inputs and four outputs with a voltage range from 0 V to 30 V and an input current capacity of up to 9 mA. Two 32-bit counters/timers enhance its measurement capabilities. While the PCI-6238 has been designated as a legacy product by National Instruments, it remains available for purchase and servicing through Apex Waves. The product dimensions are 3.8 in. x 6.1 in., and it weighs 3.6 oz. A comprehensive user manual and maintenance documentation are available for download. For pricing information, please contact a sales representative.