Description

Technical Overview

The Bently Nevada 330500-01-CN Velomitor Piezo-Velocity Sensor is a rugged, industrial-grade vibration sensor engineered for continuous, high-reliability monitoring of rotating and reciprocating machinery. Designed specifically for integration into Bently Nevada’s System 1® and 3500/40M vibration monitoring platforms, this sensor delivers true velocity output (in mm/s or in/s) without external integration circuitry—leveraging a built-in piezoelectric sensing element and low-impedance voltage amplifier. Its hermetically sealed stainless steel housing ensures long-term stability in harsh environments—including high humidity, oil mist, dust, and temperature fluctuations—making it ideal for critical applications in power generation, petrochemical plants, pulp & paper mills, and water/wastewater infrastructure. The 330500-01-CN features a nominal sensitivity of 500 mV/(in/s) [≈19.7 mV/(mm/s)], optimized for seamless compatibility with Bently Nevada’s standard 4–20 mA and ±10 V signal conditioning inputs. Unlike accelerometers requiring external integrators, the Velomitor provides direct, phase-stable velocity signals—critical for accurate spectral analysis, envelope detection, and ISO 10816-based machinery health assessment.

Key Features

• True Velocity Output: Integrated piezo-velocity transduction eliminates need for external integration—reducing signal noise, phase error, and calibration complexity.
• Rugged Industrial Design: Hermetically sealed 316 stainless steel housing with IP67-rated environmental protection; resistant to corrosion, oil, and electromagnetic interference (EMI).
• Wide Dynamic Range: Linear response from 2.5 Hz to 10 kHz (±5%), supporting both low-speed gearmesh analysis and high-frequency bearing fault detection.
• Low-Power, Two-Wire Operation: Compatible with standard 24 VDC loop-powered systems (4–20 mA output) and also supports ±10 V analog output via three-wire configuration.
• Easy Installation & Maintenance: 10–32 UNF threaded mounting, integrated M12 connector, and no field calibration required—minimizing downtime and lifecycle cost.
• Bently Nevada Ecosystem Ready: Pre-configured for plug-and-play use with 3500/40M monitors, System 1® software, and Asset Manager™ diagnostics.

Specifications

• Output Type: 4–20 mA (two-wire) or ±10 V DC (three-wire)
• Sensitivity: 500 mV/(in/s) nominal (19.7 mV/(mm/s))
• Frequency Range: 2.5 Hz – 10 kHz (±5%)
• Dynamic Range: >100 dB (typical)
• Linearity Error: ≤±1% full scale
• Operating Temperature: –50°C to +125°C (–58°F to +257°F)
• Environmental Rating: IP67, NEMA 4X, ATEX/IECEx Zone 1 (optional)
• Mounting Thread: 10–32 UNF (standard), also available with stud or magnetic base options
• Weight: 115 g (4.1 oz)
• Certifications: CE, UKCA, RoHS compliant; meets IEEE 344 and ISO 2954 vibration measurement standards

Engineered for precision, durability, and diagnostic confidence, the Bently Nevada 330500-01-CN Velomitor sets the benchmark for industrial velocity sensing—delivering actionable, standards-compliant data that extends equipment life and prevents unplanned outages. Trusted globally by OEMs and condition monitoring professionals, it’s the intelligent choice for predictive maintenance programs demanding accuracy, consistency, and seamless system integration.