MEMs, most popular laboratory

The InstantVib® IEPE Laboratory MEMS accelerometer, model 451, employs the widely adopted ICP®/IEPE 2-wire voltage transmission method. Using a 4mA constant current source, it can transmit a 20 kHz AC signal over distances of up to 100 meters without distortion. To eliminate ground loops, the signal ground is electrically isolated from the mounting surface and outer casing.

The accelerometer features a top-mounted, standard 10-32 UNF microdot connector with a high-quality, gold-plated contact socket that meets MIL standards—making it suitable for measurements under high vibration and shock conditions.

It is fully compatible with all devices that support IEPE input, including FFT analyzers, data acquisition systems, and data collectors. Additionally, TEDS functionality allows for seamless auto-calibration with compatible instruments.

For accurate measurement up to 17 kHz, the sensor should be securely screwed onto the machine. However, for faster, medium-frequency measurements below 2 kHz, magnetic mounting is also an option.

Read our : VS- 451.I51

Typical applications:

Model 451 is a highly versatile solution, capable of replacing multiple IEPE piezoelectric laboratory accelerometers, each traditionally tailored to specific applications.

With its quasi-static response down to 0.1 Hz and a carefully optimized maximum phase shift of 15° at 0.5 Hz, it is exceptionally well-suited for modal analysis. Phase congruence between sensors has been meticulously controlled to remain within ±3°, ensuring reliable multi-point measurements.

Featuring low spectral noise—just 60 μg/√Hz at 0.5 Hz and 300 μg/√Hz at 0.1 Hz—the Model 451 enables precise structural and low-speed vibration monitoring in applications such as paper production, wind turbines, and dam infrastructure. Despite its compact 10-gram form factor and affordable cost, it delivers outstanding performance.

The sensor also excels in high-dynamic environments such as pump, motor, and fan monitoring, where accelerations exceed 50 g. Its ability to accurately detect micro-g shocks in the 5 kHz to 15 kHz range, even in the presence of broadband signals up to 100 g, makes it ideal for advanced bearing and gear diagnostics.

Elevate your measurement capabilities with this breakthrough accelerometer—an innovation that delivers exceptional performance while lowering total cost of ownership.