Bently Nevada 330850-90-CN 3300 XL 25 mm Proximitor Sensor Precision Vibration Monitoring

The Bently Nevada 330850-90-CN is a high-performance 3300 XL 25 mm Proximitor Sensor designed for critical machinery protection and condition monitoring. Manufactured by Bently Nevada (part of Baker Hughes), this signal conditioning module is an essential component of the 3300 XL 25 mm proximity transducer system, used globally to measure vibration, displacement, and differential expansion (case expansion) in rotating equipment .

Key Features and Benefits

Dual-Mounting Versatility: The 330850-90-CN features a compact, low-profile design that supports both traditional panel mount installations and high-density DIN rail mounting, offering flexibility for various cabinet layouts .

Enhanced Signal Integrity: Engineered with improved RFI/EMI immunity, this Proximitor meets stringent CE mark approvals and ensures accurate signal transmission even in electrically noisy industrial environments, preventing interference from high-frequency radio signals .

Robust Field Connections: Equipped with SpringLoc terminal strips, the device allows for faster and highly secure field wiring without the need for special installation tools, reducing setup time and improving connection reliability .

Seamless System Integration: Designed specifically for 9-meter total system length, it interfaces with 3300 XL 25 mm probes (such as the 330851 series) and extension cables (such as the 330854 series) to output signals directly to Bently Nevada monitors like the 3500/45 or 1900/65A .

Technical Specifications (SEO Highlights)

Model Number: 330850-90-CN (Panel Mount variant) .

Compatibility: 3300 XL 25 mm Proximity Probe and Extension Cable .

Sensitivity: 7.87 V/mm (200 mV/mil) .

Linear Range: 12.7 mm .

Power Supply: -17.5 Vdc to -26 Vdc (-23 Vdc to -26 Vdc with barriers) .

Weight: 0.255 kg (255g) .

Housing Material: Durable A380 Aluminum .

Approvals: "CN" suffix indicates specific agency approvals for international use .

Common Applications

The Bently Nevada 3300 XL 25 mm system is widely deployed in the oil and gas, power generation, and chemical industries. It is specifically engineered for differential expansion (case expansion) monitoring on steam turbines, gas turbines, and compressors, utilizing dual sensors to measure thrust relative to bearing flanges . By providing non-contact, accurate measurements, this Proximitor helps prevent costly downtime and enhances machine safety.

For reliable asset protection, choose the authentic Bently Nevada 330850-90-CN to ensure API 670 compliance and long-term durability in your monitoring strategy .