The National Instruments NI-9242 is a high-performance C Series Voltage Input Module designed to facilitate precise voltage measurements in both single-phase and three-phase configurations, including WYE and delta setups. This module features three independent 24-bit analog input channels capable of measuring voltages up to 250 Vrms line-to-neutral and 400 Vrms line-to-line, with simultaneous sampling at a maximum rate of 50 kS/s per channel. The NI-9242 maintains compatibility with the National Instruments LabVIEW Electrical Power Suite, enabling users to develop robust power metering, monitoring, and quality analysis applications. Each channel incorporates an independent analog-to-digital converter (ADC) and signal path, ensuring accurate readings of the voltage between each neutral terminal and the associated AI terminal, as well as between the chassis ground and the neutral terminal.

Engineered for exceptional reliability, the NI-9242 complies with various industry standards, including C37.90, IEC 61010-1, C37.60, and IEC 60255-1. The module is equipped with digital and analog filters that enhance signal integrity. User connectivity is simplified with a screw terminal front connector. Designed to operate in diverse environments, the NI-9242 functions within a temperature range of -40 °C to 70 °C, with a maximum power consumption of 332 mW and minimal sleep mode consumption of 50 µW. It has a lightweight build of 5.3 oz, making it suitable for various applications, and supports a storage temperature range of -40 °C to 85 °C. The operating and storage humidity ranges are 10% to 90% RH and 5% to 95% RH, respectively, while it can withstand random and sinusoidal vibrations of 5 grms and 5 g across a frequency range of 10 to 500 Hz. For detailed information, users can access the user manual and maintenance manual available for download. For pricing, please contact a National Instruments sales representative. The NI-9242 comes with a three-year warranty.