Description
1. Product Introduction
The Bently Nevada 330104‑00‑13‑10‑02‑05 is an 8‑mm high‑precision long‑probe non‑armoured eddy‑current displacement‑vibration sensor of the 3300 XL series. It serves as the original core sensing hardware for TSI condition‑monitoring and safety‑protection systems of large rotating power‑equipment.
This sensor features an M10×1 standard mounting‑thread, 13 mm extended unthreaded probe section, regular‑protection non‑armoured cable, 1‑metre factory‑supplied standard cable and custom‑termination configuration. Designed for high‑speed heavy‑duty rotating machinery with thick equipment guards, deep‑reaching measuring points, normal operating conditions and neat‑layout wiring, it is widely used on core power units including large‑and‑medium‑size steam turbines, gas turbines, centrifugal compressors, blowers, heavy‑duty industrial pumps and electric motors.
Adopting the proven non‑contact eddy‑current measurement principle with zero physical‑contact wear, the sensor can continuously and stably collect critical operating parameters such as radial shaft vibration, axial displacement, shaft eccentricity and key‑phase speed. Built with a reinforced stainless‑steel housing and industrial‑grade materials resistant to high‑low temperature, ageing and corrosion, it delivers prominent strengths: high‑measurement accuracy, excellent linearity, low temperature drift, strong adaptability to deep‑installation measuring‑points and reliable signal stability. It reliably withstands common severe‑site conditions in power‑equipment rooms, such as high temperature‑humidity, oil‑gas dust, continuous mechanical vibration and intense frequency‑converter electromagnetic interference, supporting 7×24‑hour non‑stop online monitoring. It is suitable for new‑build monitoring‑system deployment for deep‑reaching measuring‑points, original‑equipment replacement of aged long‑probe sensors, monitoring‑upgrade projects for special‑location measuring‑points and predictive‑maintenance retrofits in power, petrochemical, coal‑chemical, oil‑gas storage‑transportation, heavy‑industry and other sectors.
2. Functions and Working Principle
Core Functions
The 330104‑00‑13‑10‑02‑05 integrates six core capabilities: dynamic high‑frequency vibration monitoring for large rotating units, high‑precision static axial‑displacement measurement, shaft‑eccentricity deformation detection, stable key‑phase speed‑signal acquisition, accurate signal transmission for deep‑installation measuring‑points and early‑fault prediction for abnormal equipment conditions. It fully satisfies comprehensive data‑acquisition requirements for condition monitoring, fault diagnosis and safety interlock protection of high‑speed heavy‑duty rotating machinery under deep‑installation conditions.
It captures micron‑level radial‑vibration amplitudes, axial‑displacement offsets and tiny shaft‑deviation values of high‑speed rotors in real‑time, collects round‑the‑clock dynamic operating data, linearly converts mechanical physical‑displacement variables into a standard DC analog‑voltage signal, and transmits the signal steadily to Bently 3300 and 3500 monitoring systems. It provides high‑precision, highly‑continuous and high‑fidelity data support for diagnosis, trend analysis and interlock trip protection against potential failures such as excessive vibration, over‑limit axial displacement, rotor‑stator rub, rotor unbalance, bearing failure and eccentric shaft wear during equipment operation.
Equipped with built‑in multi‑stage signal‑filtering and electromagnetic anti‑interference mechanisms, the sensor effectively eliminates signal distortion and data jitter caused by frequency‑converter interference, electromagnetic noise, mechanical resonance and line‑to‑line crosstalk on‑site. Optimised for signal‑transmission characteristics of deep‑installation measuring‑points, it guarantees full‑time stable and reliable monitoring data at special locations and greatly improves operational safety and fault‑prediction accuracy for heavy‑duty rotating‑equipment.
Working Principle
This sensor operates on the principle of high‑frequency non‑contact eddy‑current induction measurement, and must be matched with an original standard‑specification Bently proximitor to form a complete closed‑loop monitoring system. After high‑frequency alternating‑current is supplied to the high‑precision coil inside the extended probe, a stable, uniform and low‑drift high‑frequency alternating magnetic‑field is generated at the probe tip. When the metallic rotor target enters the magnetic‑field induction zone, closed eddy currents are induced on the metal surface.
The intensity and distribution density of eddy currents change dynamically with the gap distance between probe and target, which inversely modifies electrical parameters of the probe coil including impedance, inductance and output voltage. The sensor detects these subtle electrical variations and applies factory‑calibrated high‑precision linear‑conversion algorithms to accurately compensate signal‑loss deviations introduced by deep installation, and converts physical quantities such as probe‑target gap, vibration displacement and deformation offset into a proportional standard DC‑voltage signal.
The whole measurement process is contact‑free and friction‑free, featuring fast‑response speed and a stable linear range. The extended‑probe structure does not impair measurement accuracy or dynamic‑response performance. Steady‑state static‑displacement monitoring and high‑frequency dynamic‑vibration acquisition can be carried out simultaneously. Combined with the backend monitoring platform, it enables real‑time shaft‑condition tracking, trend logging, over‑limit alarming and interlock trip protection, ensuring controllable, stable, safe and compliant long‑term operation of large rotating power‑machinery installed at deep‑reaching measuring‑points.
3. Technical Features
- M10 thread with 13‑mm extended unthreaded section for special deep‑installation measuring‑points: Fitted with a standard 8‑mm measuring probe, M10×1 universal mounting thread and 13‑mm extended unthreaded probe segment, it is specially designed for machinery with thick guards, deep mounting holes and long‑depth measuring‑points. The probe can extend deep into equipment to align precisely with the rotor surface, solving the limitation that ordinary short probes cannot reach deep‑hole measuring‑points. It achieves firm installation and precise positioning, is fully compatible with the complete 3300 XL proximitor portfolio and the 3500 monitoring system, and requires no modification to on‑site bases or monitoring logic during replacement, delivering excellent cross‑industry adaptability.
- Superior measurement accuracy with long‑term linear stability and zero drift: Manufactured with precision‑wound coils and subjected to strict factory calibration, the sensor offers a nominal sensitivity of 7.87 V/mm and a full‑range linear error ≤ 1 %. It features extremely‑low temperature drift, and the extended probe has undergone dedicated factory calibration. It captures micron‑scale vibration and displacement changes on rotating shafts accurately, eliminates measurement deviation and data distortion caused by deep installation, and maintains zero‑parameter degradation and zero‑accuracy offset during long‑term continuous operation to meet high‑precision industrial monitoring requirements.
- 1‑metre non‑armoured cable suited for neat‑layout‑wiring environments: Adopting a lightweight non‑armoured shielded cable together with a compact stainless‑steel housing, the flexible cable enables convenient wiring. It is applicable to regular industrial sites with tidy cable routing and without heavy crushing‑or‑pulling loads. Its light weight ensures close‑fitting installation free from wiring‑induced stress loss, delivering stable long‑term monitoring performance at various deep‑reaching measuring‑points.
- Non‑contact loss‑free measurement for extended maintenance‑free service life: Contact‑free inductive sensing removes physical friction between probe and rotor, fundamentally avoiding common defects of contact‑type sensors such as high‑speed wear, ageing failure and accuracy degradation. Reinforced construction of the extended probe delivers enhanced bending‑resistance and deformation‑resistance. It supports 7×24‑hour non‑stop continuous operation of high‑speed, heavy‑duty rotating‑equipment and achieves a far‑longer service‑life than conventional short‑probe sensors.
- Full‑shield anti‑interference design ensuring stable signals under complex‑site conditions: A full‑shielded electromagnetic‑protection structure is equipped with an original corrosion‑resistant anti‑interference connector. Having passed high‑grade EMC compliance tests for power and petrochemical industries, it effectively resists intense electromagnetic radiation inside equipment‑rooms, frequency‑converter interference, line‑crosstalk and mechanical resonance. Even in enclosed deep‑installation environments, signals can be transmitted with zero attenuation, distortion‑free and jitter‑free for precise and stable monitoring data.
- Wide‑temperature corrosion‑resistant design with convenient, low‑cost maintenance: The probe and cable are fabricated from industrial materials resistant to high temperature, oil‑gas and acid‑alkali corrosion for stable operation across an extra‑wide temperature band, and can endure long‑term exposure to high‑temperature, high‑humidity, oil‑gas dust and persistent vibration under regular working‑conditions. As a purely‑passive hardware device, it requires no routine calibration or frequent maintenance. Quick disassembly and replacement simplify servicing and reduce maintenance workload and downtime‑related losses for equipment with deep‑reaching measuring‑points.
4. Specifications
Basic Parameters
Product Model: 330104‑00‑13‑10‑02‑05 Brand & Manufacturer: Bently Nevada Product Series: 3300 XL 8 mm Eddy‑Current Sensor Series Applicable System: Bently 3300 / 3500 Rotating‑Machinery Condition‑Monitoring & Protection System, TSI Turbine Supervisory‑Instrumentation System Product Type: M10‑thread extended‑probe non‑armoured non‑contact shaft‑vibration and axial‑displacement monitoring sensor Structural Specification: M10×1 standard mounting thread, 13‑mm extended unthreaded probe length, regular non‑armoured shielded cable, 1‑metre factory‑supplied standard cable, custom‑termination connector Applicable Standards: API 670 Machinery‑Protection Standard, IEC Industrial‑EMC Standard, Bently‑Nevada factory high‑precision‑measurement specifications Primary Purpose: Radial shaft‑vibration, axial‑displacement, shaft‑eccentricity and key‑phase speed monitoring for rotating units under deep‑installation conditions; data acquisition for special‑location measuring‑points, equipment fault diagnosis, machinery safety interlock protection and predictive‑maintenance data support
Core‑Performance Parameters
Operating Principle: High‑frequency eddy‑current induction measurement, dual‑mode monitoring for dynamic vibration + static displacement Probe Specification: Standard 8‑mm measuring probe, 13‑mm extended unthreaded length, M10×1 mounting thread Nominal Sensitivity: 7.87 V/mm (200 mV/mil) Linear Measurement Range: 0.25 mm ~ 2.3 mm (10 ~ 90 mils) Recommended Installation Gap: 1.27 mm (50 mils) Frequency Response: 0 Hz ~ 10 kHz, supporting high‑precision high‑frequency vibration‑signal acquisition for machinery Linearity Accuracy: Full‑range linear error ≤ 1 %, zero‑parameter drift and zero‑accuracy degradation during long‑term operation Output Signal: Standard DC analog‑voltage signal, compatible with high‑precision system acquisition and interpretation
Electrical Parameters
Power Supply: Powered via original standard‑specification proximitor, −17.5 VDC ~ −26 VDC Maximum Operating Current: 12 mA Immunity Grade: High‑level EMI/RFI electromagnetic shielding, resistant to industrial high‑frequency interference and signal disturbance at enclosed measuring‑points Measurement Characteristics: Dual‑mode high‑precision output for high‑frequency dynamic‑vibration acquisition and steady‑state static‑displacement measurement, excellent measurement consistency for extended probes
Mechanical & Physical Parameters
Structural Features: M10 standard‑thread probe, 13‑mm extended unthreaded deep‑installation‑adapted segment, reinforced stainless‑steel housing, 1‑metre non‑armoured shielded cable, corrosion‑resistant sealed connector, anti‑vibration reinforced construction Mounting Method: M10 thread‑locked fixed installation, suitable for deep‑hole, deep‑reaching and thick‑guard special measuring‑point layouts Maintenance Characteristics: No routine calibration or frequent maintenance required; deformation‑resistant probe, easy disassembly for fast‑swap servicing at special‑location measuring‑points
Environmental Parameters
Probe Operating Temperature: −52 ℃ ~ +177 ℃ Cable Operating Temperature: −52 ℃ ~ +177 ℃ Storage Temperature: −60 ℃ ~ +200 ℃ Relative Humidity: 5 %‑95 % RH, non‑condensing Environmental Resistance: Immunity to strong electromagnetic interference and mechanical vibration; oil‑gas‑corrosion‑resistant, high‑temperature‑humidity‑resistant, dust‑proof and anti‑vibration, stable operation at enclosed deep‑reaching measuring‑points, suitable for 7×24‑hour continuous on‑line monitoring of industrial machinery
5. Application Scenarios
The Bently Nevada 330104‑00‑13‑10‑02‑05 sensor is widely deployed in TSI condition‑monitoring systems for high‑speed heavy‑duty rotating power‑machinery with thick guards, deep mounting holes and depth‑restricted measuring‑points, including thermal‑power plants, gas‑fired combined‑cycle stations, petrochemical refining facilities, coal‑chemical plants, oil‑gas transmission terminals and heavy‑industry captive‑power stations. It constitutes core dedicated sensing hardware for fault prediction, safety interlock protection and stable‑operation maintenance of large rotating‑equipment in special deep‑installation scenarios.
Typical applications include round‑the‑clock shaft‑vibration and axial‑displacement monitoring at deep‑reaching measuring‑points on thick casings of turbo‑generator sets; high‑precision shaft‑eccentricity deformation and key‑phase speed acquisition at deep‑hole mounting locations of gas turbines; condition monitoring of guarded centrifugal compressors in refining‑plants; dynamic‑parameter acquisition at deep‑installation measuring‑points on large‑scale industrial induced‑draught fans, forced‑draught fans and heavy‑duty pumps; hardware fitting for enclosed equipment equipped with thick guards; deployment of machinery‑monitoring‑systems for neat‑layout‑wiring new‑build projects; original‑equipment replacement of aged 13‑mm extended‑probe sensors on legacy machinery; accuracy‑upgrade retrofits for monitoring‑systems at special‑location measuring‑points; unattended on‑line monitoring of enclosed power‑equipment; vibration‑anomaly fault diagnosis and trend analysis at deep‑reaching machinery measuring‑points; compliance‑monitoring hardware for industrial rotating‑machinery at special‑location measuring‑points; and data acquisition for predictive maintenance of industrial equipment.
As a dedicated high‑precision non‑armoured eddy‑current sensor within the 3300 XL series (M10 thread, 13‑mm extended unthreaded probe, 1‑metre cable), it delivers core strengths: extended probe suited for deep‑hole measuring‑points, high universal compatibility of standard threads, simplified wiring, non‑contact loss‑free measurement, stable accuracy, powerful anti‑interference performance and maintenance‑free durability. It addresses well‑known industry‑wide drawbacks of conventional sensors: incompatibility with thick‑guard equipment, monitoring blind zones at deep‑hole measuring‑points and unstable signals within enclosed environments. It mitigates risks of unplanned shutdown, component damage and safety incidents triggered by shaft rub, rotor unbalance, bearing failure, over‑limit displacement and other faults at deep‑reaching measuring‑points, and comprehensively guarantees long‑term safe, stable, efficient and compliant operation of large rotating power‑machinery installed at special‑location measuring‑points. It is the preferred original‑equipment core sensor for new‑system deployment, legacy‑system retrofits and fault‑repair maintenance projects of rotating‑machinery condition‑monitoring systems for deep‑installation industrial measuring‑points.
