Bently Nevada 330854-040-24-05 3300 XL Extension Cable

Product Overview

The Bently Nevada 330854-040-24-05 is a 3300 XL 25 mm extension cable engineered for stable proximity transducer signal transmission.
It reliably connects 25 mm proximity probes to Proximitor® sensors within the 3300 XL monitoring architecture.
Moreover, the cable supports precise vibration and axial position measurements in demanding rotating machinery environments.
Its construction emphasizes electrical integrity, mechanical durability, and long-term stability under harsh industrial conditions.

Key Benefits and Functional Highlights

In addition, silver-plated copper conductors minimize signal loss across long operating periods and elevated temperatures.
Therefore, measurement accuracy remains consistent even in turbines, compressors, and critical balance-of-plant equipment.
The PFA insulation and jacket resist aggressive chemicals, steam exposure, and high ambient temperatures.
Moreover, the controlled 75 ohm impedance supports proper system calibration across the complete transducer chain.
For instance, maintenance teams benefit from predictable performance during probe replacement or system recalibration activities.

Technical Specifications

Model: 330854-040-24-05
Series: 3300 XL 25 mm Extension Cable
Compatible System: 3300 XL Proximity Transducer System
Cable Length: 4.0 m (13.1 ft)
Characteristic Impedance: 75 Ω nominal
Capacitance: 69.9 pF/m (21.3 pF/ft) at 1 kHz
Conductor Material: Silver-plated copper, 3 × 0.51 mm² (20 AWG)
Insulation: Color-coded PFA, steam and chemical resistant
Shielding: Silver-plated copper braid, minimum 90% optical coverage
Outer Jacket: Extruded PFA, blue, self-extinguishing UL VW-1
Operating Temperature Range: –35 °C to +200 °C continuous
Minimum Bend Radius: 65 mm for repeated flexing
Approval Code: 05, multiple agency approvals, no armor

Typical Applications and System Integration

This extension cable integrates seamlessly into proximity measurement loops for vibration and shaft position monitoring.
Therefore, it suits steam turbines, gas turbines, centrifugal compressors, large pumps, and motor-driven machinery.
Moreover, the cable maintains system accuracy when installed in high-temperature or chemically aggressive plant areas.
For instance, it supports reliable machinery protection strategies within power generation and oil and gas facilities.

Reliability, Support, and Service

Bently Nevada designs this cable for long service life and predictable performance under continuous operation.
In addition, consistent electrical characteristics simplify commissioning, troubleshooting, and long-term asset management.
Therefore, maintenance engineers can confidently standardize spare parts across similar 3300 XL installations.

FAQ

Q1: Is the 330854-040-24-05 compatible with all 3300 XL 25 mm proximity probes?
Yes, it is specifically designed for use with 3300 XL 25 mm probes and matching Proximitor® sensors.

Q2: Can this extension cable operate in high-temperature turbine enclosures?
Yes, the PFA insulation and jacket support continuous operation up to +200 °C.

Q3: Does the cable affect system calibration or measurement accuracy?
No, its controlled impedance and capacitance preserve factory calibration across the full transducer system.

Q4: Is this cable suitable for oil, steam, or chemical exposure environments?
Yes, it resists mineral oils, phosphate esters, Skydrol, acids, alkalis, and steam exposure.

Q5: Can the cable be reused during probe replacement?
In most cases, reuse is acceptable if electrical integrity and mechanical condition remain within specification.