Bently Nevada 330500-07-04 Velomitor Piezo-velocity Sensor

Description

The 330500-07-04 is a Velomitor Piezo-velocity Sensor designed for measuring absolute casing, bearing housing, or structural vibration. This configuration features a 3/8-16 UNC mounting thread adapter (Option 07) and does not include specific agency approval certifications (Option 00, base configuration for non-hazardous locations). As a specialized piezoelectric accelerometer, the 330500 integrates solid-state electronics, eliminating moving parts and ensuring resistance to mechanical wear and degradation. It supports flexible installation, allowing for vertical, horizontal, or angled mounting orientations on machine housings.

The sensor provides a continuous, reliable output by measuring velocity, making it effective for identifying common machine malfunctions such as unbalance and misalignment. It is compatible with a wide range of Bently Nevada monitoring systems. Proper installation on the bearing housing or casing is required to maintain the specified frequency and amplitude response; for integration into monitoring chains, this sensor requires compatible interconnection cables.

Features

• Option 07 mounting: Includes 3/8-16 UNC mounting thread adapter.
• Solid-state design: No moving parts, eliminating mechanical degradation.
• Output: 3.94 mV/mm/s (100 mV/in/s) nominal sensitivity.
• Housing: 316L stainless steel, hermetically sealed construction.
• Mounting: Compatible with vertical, horizontal, and angular orientations.
• Connector: Standard 2-pin MIL-C-5015 hermetically sealed stainless steel shell.

Applications

• Bearing housing vibration monitoring
• Casing vibration measurements
• Structural vibration analysis
• Rotating machinery protection (unbalance and misalignment detection)
• Power generation, petrochemical, and industrial rotating equipment

Ordering Information

Technical Specifications

Installation Guidelines

• Ensure the sensor is mounted directly on the bearing housing or machine casing for optimal vibration transmission.
• Use the specified mounting torque of 32-46 kg cm (24-40 in-lb) to ensure accurate frequency response.
• The sensor case is isolated; ensure proper shield grounding at the monitor end per installation documentation.
• Avoid using the 330500 for displacement measurements if electrical noise is a concern, as integration can amplify interference.

Compliance and Certifications

• EMC Directive 2014/30/EU
• RoHS Directive 2011/65/EU
• FCC Part 15
• ABS Marine Vessels / Offshore Units