Bently Nevada 330400-02-00 Accelerometer for Machinery Protection

This Bently Nevada accelerometer delivers precise vibration measurements for critical rotating equipment. It converts mechanical motion into proportional electrical signals for analysis systems. Engineers can utilize this sensor for predictive maintenance and machine protection programs. Its piezoelectric sensing element ensures accurate and repeatable vibration data collection. The sensor integrates seamlessly with Bently Nevada 3500 monitoring systems.

Physical Dimensions and Housing Construction

The accelerometer measures 2.7 inches in length and 1.3 inches in diameter. Its hermetically sealed stainless steel housing weighs approximately 5.0 ounces. A 4-pin connector provides all power and signal interface connections. The unit features a 1/4-28 UNF mounting stud for secure installation. This design ensures excellent mechanical coupling for accurate vibration transmission.

Sensitivity and Measurement Range

The sensor delivers a nominal sensitivity of 100 mV/g for standard monitoring applications. It accurately measures acceleration from 0.1 g to 500 g peak. The unit maintains exceptional linearity across its entire dynamic range. This sensitivity suits both low-amplitude and high-impact vibration events. The sensor provides reliable data for comprehensive machine condition assessment.

Frequency Response and Dynamic Performance

The accelerometer offers a frequency response from 0.5 Hz to 15 kHz. This bandwidth captures both slow-speed and high-frequency machine vibrations effectively. The unit exhibits a resonant frequency of 30 kHz for extended measurement capability. This performance supports analysis of gear meshing and blade passing frequencies. The sensor maintains phase response integrity for advanced diagnostics.

Connector Interface and Cable Compatibility

The unit features a 4-pin Mil-C-5015 connector for secure signal transmission. This connector mates with standard Bently Nevada extension cables reliably. The sensor includes internal electromagnetic shielding for noise immunity. This shielding prevents interference from nearby electrical equipment and drives. The connector design ensures vibration-resistant operation in demanding machine environments.

Power Requirements and Output Characteristics

The sensor operates on a 24 VDC excitation voltage from the monitor. It draws a constant current of 4 mA for internal electronics operation. The unit provides a low-impedance voltage output for noise-resistant transmission. This output drives cable lengths up to 300 meters without signal degradation. The sensor includes reverse polarity protection for safe field installation.

Temperature Range and Environmental Tolerance

The accelerometer operates reliably from -55 to 125 degrees Celsius. Its welded stainless steel housing provides complete hermetic sealing. The unit withstands humidity up to 100% for marine and outdoor applications. The sensor meets IP68 standards for dust and water immersion protection. This robust construction ensures long-term reliability in harsh industrial settings.

Technical Specifications Overview