Bently Nevada 330500 Series 330500-02-01 Absolute Vibration Sensor

Product Overview

The Bently Nevada 330500-02-01 Velomitor uses specialized internal piezo-electric electronics to capture absolute casing vibration on rotating machinery. This solid-state sensor directly measures velocity to identify critical mechanical faults before costly equipment damage occurs.

Functional Description

This transducer measures absolute vibration velocity by tracking the physical movement of bearing housings, machinery casings, or structural supports. Inside the hermetically sealed stainless steel case, an internal accelerometer detects structural acceleration and automatically integrates the signal into a velocity output. Because this design utilizes solid-state components rather than moving parts, the sensor completely eliminates the mechanical wear common to older moving-coil velocity meters. The device then sends this precise linear voltage output directly to a machinery protection monitor, enabling real-time fault evaluation and automatic alarm triggering.

Technical Characteristics

• Wear-Free Architecture: Solid-state design eliminates internal moving components to ensure a virtually unlimited operational lifespan without performance drift.
• Omnidirectional Installation: The sensor operates reliably at any mounting angle to simplify installation on complex machinery geometries.
• Integrated Signal Processing: Internal circuitry converts raw acceleration data into a clean velocity signal directly inside the rugged sensor housing.
• Low Impedance Output: Low dynamic output impedance preserves signal integrity over long cable runs without requiring external amplifiers.
• Hermetic Shielding: Laser-welded stainless steel housing isolates sensitive internal components from corrosive process fluids, moisture, and dust.

Product Specifications

Industrial Applications

Reliability engineers specify this heavy-duty velocity transducer to track structural casing path dynamics on critical plant equipment. The sensor integrates easily with standard industrial machinery protection frameworks.

• Tracking structural casing vibration on large steam and gas utility turbines
• Monitoring external bearing housing dynamics on heavy centrifugal process pumps
• Absolute vibration tracking on multi-stage plant air and gas compressors
• Velocity measurement programs on large industrial fans and cooling tower blowers
• Machine health monitoring for industrial gearboxes and high-power electric motors