Bently Nevada 330500-00-04 Velomitor Piezo-velocity Sensor

Description

The 330500-00-04 is a Bently Nevada Velomitor Piezo-velocity Sensor configured with Option 00 (no mounting adapter) and Option 04 (CSA and ATEX multiple agency approvals). This sensor is engineered for measuring absolute casing, bearing housing, or structural vibration on rotating machinery. As a specialized piezoelectric accelerometer with integrated solid-state electronics, the unit converts velocity-based vibration into a proportional voltage signal for direct interface with monitoring systems.

By incorporating integrated electronics with no moving parts, the 330500 eliminates the risk of mechanical degradation common in traditional velocity transducers. This specific configuration supports installation across multiple hazardous area environments (CSA/ATEX) and is designed for direct mounting without an adapter, allowing for versatile horizontal, vertical, or angular orientation.

Features

• Option 00: No mounting thread adapter included (standard 3/8-24 UNF integral mount).
• Option 04: CSA/ATEX multiple hazardous area approvals for safe operation in specified zones.
• Integrated solid-state piezoelectric design provides superior durability and frequency response.
• 316L stainless steel, hermetically sealed case for resistance to industrial environmental conditions.
• Case-isolated grounding prevents ground loops and electrical interference.
• Compatible with standard Bently Nevada 3300 monitoring systems for casing vibration protection.

Applications

• Absolute vibration monitoring on bearing housings and machine casings.
• Structural vibration measurement in power generation and petrochemical facilities.
• Rotating machinery protection where machine casing vibration is a key indicator of rotor or internal component condition.
• Hazardous area machinery monitoring (Class I, Div 1; ATEX/IECEx zones).

Ordering Information

Technical Specifications

Installation Guidelines

• Ensure the sensor is installed on a clean, flat surface on the bearing housing or machine casing for optimal frequency response.
• Improper mounting can attenuate amplitude and frequency performance or generate false signals.
• Use appropriate Bently Nevada interconnect cables (e.g., 9571-NN or 89477-NN) for signal transmission to the monitoring rack.
• Ensure hazardous area installation adheres to the safety drawings and entity parameters provided in the datasheet for CSA/ATEX compliance.