21747-045-01 Bently Nevada 3300 Proximity Probe Armored Cable

Product Description

The Bently Nevada 21747-045-01 serves as a critical link in machinery protection systems, specifically connecting proximity probes to signal conditioning Proximitors. This cable measures 4.5 meters (approximately 14.7 feet) in length, facilitating flexible routing in large industrial rotating equipment. By utilizing specialized coaxial shielding, the cable effectively preserves the integrity of high-frequency displacement signals while eliminating external electronic noise.

Technical Specifications

• Brand: Bently Nevada
• Part Number: 21747-045-01
• Cable Length: 4.5 Meters (045 Option)
• Armor Option: Integrated Stainless Steel Armor (01 Option)
• System Compatibility: 3300 Proximity Transducer Systems
• Weight: 0.45 kg
• Origin: USA
• HS Code: 8537101190

Engineering Advantages

Engineers specify the 21747-045-01 for applications where mechanical durability remains a primary concern. Because the cable includes a robust stainless steel armor sheath, it resists physical hazards such as abrasion, crushing, and sharp impacts common in turbine decks and pump stations. Furthermore, this armored layer prevents the internal conductors from stretching or breaking under installation tension, which ensures a constant impedance across the entire signal path.

The cable construction maintains a low capacitance profile to avoid signal attenuation or phase shifts in vibration data. Consequently, the monitoring system receives an accurate representation of shaft position and dynamic motion. Furthermore, the high-quality connectors provide a secure, moisture-resistant interface that withstands the constant thermal cycling found in power generation and petrochemical processing plants.

Application and Installation

Typical installations for the 21747-045-01 involve critical machinery including steam turbines, centrifugal compressors, and large induction motors. Maintenance teams integrate these cables into predictive maintenance programs to monitor radial vibration and axial thrust. To ensure optimal performance, technicians should avoid sharp bends in the armored section and verify that all connections remain tight and free of contaminants. Since this cable belongs to the active Bently Nevada product line, it supports standard TSI (Turbine Supervisory Instrumentation) requirements globally.

FAQs

• Is this cable compatible with 3300 XL systems? While specifically designed for 3300 proximity systems, users should verify electrical matching and total system length (typically 5 or 9 meters) before installation to ensure calibration accuracy.
• What does the “01” suffix represent? The “01” designation confirms that the cable includes a protective armored sheath over the primary insulation, offering enhanced mechanical protection.
• Can the cable be shortened in the field? Field modifications are not recommended. Proximity transducer systems require precise cable lengths to maintain the calibrated output of the Proximitor sensor. Any change in length will result in measurement error.