Product Overview

The Bently Nevada 330877-80-37-00 serves as a high-integrity signal bridge within the 3300 XL 50 mm Proximity Transducer System. Specifically engineered for large-scale rotating machinery, this extension cable facilitates the transmission of precise displacement data from the probe to the proximitor sensor. In critical environments such as utility-scale steam turbines and high-capacity axial compressors, the 50 mm system provides the extended linear range necessary for tracking significant shaft thermal expansion and vibration. This cable employs advanced shielding to maintain signal purity, ensuring that the Bently Nevada 3500 Machinery Protection System receives accurate, low-noise data for emergency shutdown (ESD) and condition monitoring protocols.

Suffix Configuration & Hardware Logic

330877 - 3300 XL 50 mm Extension Cable Series

This model represents the heavy-duty coaxial cable designed specifically for the 50 mm transducer system, which offers a much larger linear range compared to standard 8 mm probes.

-80 - Cable Length Option

This suffix designates a total cable length of 8.0 meters (approximately 26.2 feet). This length is mathematically integrated into the system's electrical resonance; therefore, maintaining this specific length is critical for calibration accuracy.

-37 - Connector and Cable Option

The -37 option specifies high-performance coaxial cabling equipped with stainless steel ClickLoc connectors. These connectors feature a locking mechanism that resists decoupling caused by high-frequency machinery vibration.

-00 - Agency Approval Option

This configuration is intended for general-purpose installations or where specific hazardous area certifications are managed at the system level. The physical construction maintains the same high-temperature and chemical resistance standards as certified versions.

Core Technical Specifications

Professional Installation Protocol

To ensure long-term signal stability, technicians must avoid sharp bends in the cable routing. Maintain a minimum bend radius of 25.4 mm (1.0 inch) to prevent damage to the internal coaxial shielding. During the mating process, verify that the ClickLoc connector "clicks" into place; this mechanical feedback confirms a low-impedance connection. For optimal performance in high-EMI environments, route the 330877-80-37-00 through grounded metal conduit. Never attempt to cut or splice the cable, as proximity systems are strictly calibrated to the electrical length of the full cable assembly.

Strategic Engineering Advantages

The 330877-80-37-00 extension cable excels in the extreme thermal zones found near turbine housings. Its specialized fluoropolymer insulation resists degradation from synthetic lubricants and high-pressure steam, maintaining an IP68-equivalent seal when properly connected. This cable integrates seamlessly into modern DCS architectures like Honeywell Experion PKS, providing the high-fidelity signal required for precise "Phase" and "Vibration" analysis. By using original Bently Nevada cabling, operators eliminate the risk of "signal drift" that often plagues third-party alternatives, ensuring maximum asset uptime and protection.

Ordering info

• One (1) Bently Nevada 330877-80-37-00 Extension Cable.

• Factory-sealed industrial protective packaging.

• Pre-installed ClickLoc connector protectors.

• Certificate of Conformance and individual test results.

Logistics & Global Shipping

Delivery time: 2-7 days when payment finish via DHL/FEDEX/UPS. Each cable undergoes a final continuity and impedance check before being placed in specialized anti-static industrial packaging. Our global logistics network ensures that critical spare parts arrive at your facility with full tracking and customs documentation prepared for rapid clearance.

Technical Field FAQs

Q1: Can I use this cable with a 3300 XL 8 mm probe?

A1: No. The 330877 series is calibrated specifically for the 50 mm transducer system. Using this with an 8 mm or 11 mm probe will cause a severe mismatch in scale factor and linear range.

Q2: What is the purpose of the ClickLoc connector?

A2: The ClickLoc design provides a positive mechanical lock. Unlike standard threaded connectors that can vibrate loose over time, the ClickLoc ensures the circuit remains closed and the gap voltage remains stable.

Q3: Is this cable resistant to turbine oil?

A3: Yes. The outer jacket is engineered to withstand prolonged exposure to common industrial hydrocarbons and synthetic lubricants without cracking or losing insulation resistance.

Q4: How do I verify if the cable is faulty?

A4: Use a digital multimeter to check for center-conductor-to-shield shorts and end-to-end continuity. However, the most effective test is measuring the "Not OK" status and gap voltage through the 3500 rack or a Proximitor sensor.