• Crystal Instruments India

Vibration Control System

Crystal Instruments Corporation, a global leader in the design, manufacture and supply of high-reliability instrumentation and software for sound and vibration test, measurement, and control, has introduced its Spider-81, a highly modular, distributed, scalable Vibration Control System with centralised DSP architecture and simple operation via PC, Wi-Fi enabled PDA or iPad. Unlike traditional controllers that rely heavily on an external PC for real-time operation, Spider-81 is the first controller to directly integrate time-synchronised Ethernet connectivity with an embedded DSP centralised architecture. Its patented dual A/D design makes Spider-81 the industry’s first vibration control system to achieve a true 130 dB input dynamic range. Each measurement channel can detect signals ranging from 6 µV to 20V, with a design that completely eliminates the need for the input range or gain settings found on traditional controllers. Spider-81 integrates an IEPE output, charge amplifier, AC/DC coupling, and Transducer Electronic Data Sheet capabilities per IEEE P1451.1 standards, facilitating its use within larger channel count applications. Its unique floating ground design significantly reduces potential EMI/ground loop interference during installation. The incorporation of safety routing allows for transducer failure detection within milliseconds, ensuring quick troubleshooting of measurement error sources. Built-in isolated digital I/O and RS-485 serial ports also allow for easy interface with other hardware. A ten-pin D-SUB connection allows for independent monitoring of analog signal on both inputs and outputs. Spider-81 hardware includes voltage, charge, and IEPE transducer inputs, making it ideal for use with a variety of sensor types. The system’s internal flash memory stores test configuration data for control of up to hundreds of channels simultaneously with real-time analysis and recording.