Description
1. Product Introduction
Bently Nevada 330130‑040‑00‑CN is an extension cable dedicated for 8 mm eddy‑current sensors of Baker Hughes‑Bently Nevada 3300 XL series. As an original‑equipment signal‑extension cable, it strictly complies with API 670 industry standard for rotating‑machinery monitoring, and acts as core supporting transmission hardware for condition‑monitoring systems of large rotating units.
This model is a 4.0 m standard‑length, general‑purpose non‑armored, fully‑shielded extension cable. It is specially used for distance‑extension adaptation between 3300 XL 8 mm eddy‑current probes and proximitors, solving cabling challenges such as scattered measuring points, insufficient wiring length and centralized cabinet installation on‑site.
Adopting original tri‑axial shielding structure and high‑low‑temperature‑resistant fluoropolymer jacket, it features loss‑free signal transmission, anti‑interference, oil resistance, anti‑aging and ultra‑low‑capacitance properties. Suitable for harsh industrial scenarios including thermal‑power generation, gas‑power generation, petroleum refining, coal‑chemical industry and metallurgy, it supports 7×24‑hour uninterrupted steady‑state unit operation. It is an original dedicated spare part for new‑system cabling, cable‑length‑increase retrofit, aged‑cable replacement and measuring‑point‑relocation rectification of monitoring systems.
2. Functions and Working Principle
Core Functions: The core purpose of 330130‑040‑00‑CN extension cable is signal extension and electrical matching for Bently Nevada 3300 XL monitoring loops, realizing reliable long‑distance signal transmission and power‑supply‑loop connection between eddy‑current probes and proximitors.
It mainly performs loss‑free extended transmission of high‑frequency weak dynamic sensor signals such as shaft vibration, shaft displacement, rotor eccentricity and key‑phasor rotational speed, while providing stable power‑supply loops for front‑end probes. It ensures impedance matching, consistent parameters, attenuation‑free and distortion‑free signals of the whole sensing system.
It perfectly adapts to complex on‑site cabling conditions, and addresses issues including insufficient native probe‑cable length, measuring points far away from cabinets and excessively long detoured wiring routes. It guarantees consistent electrical parameters of monitoring loops and avoids measurement deviation, signal drift and system alarms caused by misuse of non‑original extension cables.
Working Principle: This extension cable adopts original‑equipment standard tri‑axial shielding structure and precise capacitance‑impedance design. Its electrical parameters are fully matched with the 3300 XL 8 mm sensor system, enabling seamless connection with native probe cables and maintaining unified overall loop impedance, capacitance and attenuation characteristics throughout.
Featuring ultra‑low distributed‑capacitance parameters, it effectively suppresses transmission attenuation and phase shift of high‑frequency vibration signals, and ensures complete restoration of dynamic signals across the full 0‑10 kHz frequency band. The dual‑layer full‑shielding structure isolates on‑site electromagnetic interference, power‑frequency crosstalk and ground‑loop interference, preventing signal jitter, noise superposition and data distortion induced by long‑distance transmission.
Via precise electrical matching and stable physical‑transmission performance, it extends the effective transmission distance of monitoring loops while preserving the measurement accuracy, linearity and diagnostic functions of the complete system. Cooperated with proximitors, it achieves comprehensive loop fault self‑check to guarantee long‑term stable and reliable operation of monitoring systems.
3. Technical Features
Original‑factory Precise Electrical Matching: Custom‑designed for 3300 XL 8 mm eddy‑current systems. Its distributed capacitance, impedance and wire gauge fully follow original‑equipment standards. System sensitivity, linear range and measurement accuracy remain unchanged after cable extension, eliminating monitoring failure and data drift caused by mismatched parameters of generic cables.
Loss‑free Transmission of High‑frequency Signals: With ultra‑low‑capacitance transmission performance, it adapts to full‑band unit‑vibration signals from 0 to 10 kHz. Long‑distance transmission occurs without attenuation, phase shift or waveform distortion. It accurately reproduces minor dynamic rotor variations and meets high‑precision‑monitoring requirements of API 670.
Full‑shield Superior Anti‑interference Performance: The tri‑axial dual‑layer full‑shielding structure efficiently suppresses on‑site electromagnetic radiation, power‑frequency interference, ground‑loop current and signal crosstalk. It delivers outstanding signal stability for long‑run transmission under harsh conditions with zero noise and zero signal jump.
Adaptability to Severe Industrial Conditions: Constructed with high‑low‑temperature‑resistant, oil‑resistant and corrosion‑resistant fluoropolymer jacket, it is anti‑aging, bending‑resistant and moisture‑tolerant. It withstands long‑term exposure to complex harsh conditions around units including high temperature, dust, oil contamination and vibration for long service life.
Plug‑and‑play without Commissioning: Designed with standard original‑equipment connectors for perfect plug‑and‑play compatibility with probes and proximitors. No extra commissioning or parameter modification is required. It features easy installation and strong compatibility, greatly lowering on‑site‑retrofit and maintenance difficulty.
- Full‑process Fault‑diagnosis Compatibility: The extended loop is fully compatible with system self‑diagnosis functions. It supports fault detection for open‑circuit, short‑circuit and abnormal impedance without masking or altering system fault‑alarm logic, ensuring safe and controllable monitoring loops.
4. Specifications
Basic Parameters
Product Model: 330130‑040‑00‑CN Brand‑Manufacturer: Bently Nevada (Baker Hughes) Product Type: Dedicated Extension Cable for 3300 XL 8 mm Sensors Applicable System: Full range of Bently Nevada 3300 XL 8 mm eddy‑current probes and proximitor monitoring systems Compliance Standard: API 670 Industrial Standard for Rotating‑machinery Condition Monitoring Model Definition: 330130 = Extension‑cable series; 040 = Cable length 4.0 m; 00 = Non‑armored standard configuration; CN = China‑compliant version
Electrical‑transmission Parameters
Cable Length: 4.0 m original‑equipment standard extension cable Cable Structure: Tri‑axial dual‑layer full‑shielding structure Distributed Capacitance: Original‑equipment standard low‑capacitance parameters for loss‑free high‑frequency‑signal transmission Applicable Frequency Band: 0‑10 kHz, fully covering unit‑vibration‑monitoring frequency range System‑sensitivity Matching: Standard accuracy 7.87 V/mm (200 mV/mil) without deviation Transmission Performance: Free of signal attenuation, phase shift and waveform distortion
Environmental‑condition Parameters
Operating Temperature: ‑52 ℃ ~ +177 ℃ Storage Temperature: ‑40 ℃ ~ +85 ℃ Operating Humidity: 5%‑95%RH, non‑condensing Condition Resistance: Oil‑resistance, moisture‑resistance, corrosion‑resistance, anti‑aging, electromagnetic‑interference immunity, resistance to mechanical bending & pulling Ingress‑protection Grade: Industrial‑grade dust‑proof and moisture‑proof, suitable for complex on‑site unit environments
Operation & Adaptation Parameters
Operation Mode: Supports 7×24‑hour continuous uninterrupted steady‑state operation Connection Method: Loss‑free plug‑in connection via original‑equipment standard aviation connectors Applicable Scenarios: Long‑distance wiring between probes and proximitors, measuring‑point relocation, wiring‑retrofit length extension Product Advantages: Zero‑parameter deviation, no‑calibration‑required, no‑commissioning‑required, easy maintenance, long‑term trouble‑free operation
5. Application Scenarios
Bently Nevada 330130‑040‑00‑CN extension cable is widely used in on‑line condition‑monitoring systems for large‑scale rotating machinery across thermal‑power generation, gas‑power generation, petroleum refining, coal‑chemical industry, oil‑gas storage‑transportation and heavy‑metallurgy industries. It is an indispensable core supporting hardware for 3300 XL sensing‑monitoring loops.
Typical application scenarios include: length‑increase adaptation for shaft‑vibration / shaft‑displacement monitoring cables of steam‑turbine generator sets and gas‑turbine units; long‑distance wiring for rotor‑monitoring measuring points of large‑scale centrifugal and screw compressors; extended‑loop installation for monitoring of auxiliary equipment such as large‑industrial fans and water pumps; rectification for insufficient cable length caused by scattered on‑site measuring points and centralized cabinet layout; circuit retrofit of legacy‑unit monitoring systems; replacement of aged and damaged extension cables; wiring adaptation after unit‑overhaul relocation; supporting precision cabling for on‑line‑monitoring systems of high‑risk rotating equipment.
Benefiting from core strengths of original‑factory precise electrical matching, loss‑free high‑frequency‑signal transmission, strong anti‑interference performance and wide‑temperature endurance, it thoroughly resolves problems such as accuracy degradation, signal anomalies and system false alarms induced by misuse of non‑original extension cables. It fully guarantees accurate shaft‑system‑monitoring data, stable loops and reliable systems for large‑scale units, and serves as a key original spare part for maintenance, retrofit and new‑installation of condition‑monitoring systems for critical industrial equipment.
