Description
1. Product Introduction
The Bently Nevada 330103‑00‑10‑10‑02‑00 is an 8‑mm high‑precision medium‑length‑probe non‑armoured eddy‑current displacement‑vibration sensor of the 3300 XL series. it acts as original core sensing hardware for TSI condition‑monitoring and safety‑protection systems of large rotating power‑equipment.
This sensor adopts an M10×1 standard mounting‑thread, a 10‑mm medium‑length unthreaded probe section, regular‑protection non‑armoured cable, a 1‑metre factory‑supplied standard cable and a standard miniature co‑axial connector. Designed for high‑speed heavy‑duty rotating machinery with moderately‑thick equipment guards, medium‑depth mounting holes, neat‑layout wiring and normal operating conditions, it is widely deployed on core power units such as large‑and‑medium‑size steam turbines, gas turbines, centrifugal compressors, blowers, heavy‑duty industrial pumps and large electric motors.
Based on the proven non‑contact eddy‑current measurement principle with zero physical‑contact wear, the sensor can continuously and reliably collect critical operating parameters, including radial shaft vibration, axial displacement, shaft eccentricity and key‑phase speed. Constructed with a reinforced stainless‑steel housing and industrial‑grade materials resistant to high‑low temperature, ageing and corrosion, it delivers key advantages: high‑measurement accuracy, excellent linearity, low temperature drift, strong adaptability to medium‑depth measuring‑points, stable signal transmission and outstanding versatility. It reliably withstands typical harsh‑site conditions inside 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 medium‑depth measuring‑points, original‑equipment replacement of aged 10‑mm medium‑length‑probe sensors, monitoring‑upgrade projects for medium‑depth locations and predictive‑maintenance retrofits across power, petrochemical, coal‑chemical, oil‑gas storage‑transportation, heavy‑industry and other sectors.
2. Functions and Working Principle
Core Functions
The 330103‑00‑10‑10‑02‑00 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, loss‑free signal transmission for medium‑depth 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 medium‑depth 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’s signal‑processing algorithm is optimised for 10‑mm medium‑length‑probe installation. It effectively eliminates signal distortion and data jitter caused by frequency‑converter interference, electromagnetic noise, mechanical resonance and line‑to‑line crosstalk on‑site, and prevents signal attenuation and fluctuation induced by medium‑depth installation. This guarantees full‑time stable and reliable monitoring data at various regular‑depth measuring‑points 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 10‑mm medium‑length 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 linear‑conversion algorithms tailored for medium‑length probes to accurately compensate signal‑loss deviations introduced by medium‑depth installation. Physical quantities such as probe‑target gap, vibration displacement and deformation offset are converted 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. Subjected to dedicated factory calibration, the 10‑mm medium‑length probe preserves all core‑measurement characteristics of the standard 8‑mm sensor. 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‑and‑medium‑size rotating power‑machinery installed at medium‑depth measuring‑points.
3. Technical Features
- M10 thread with 10‑mm medium‑length unthreaded section for medium‑depth measuring‑points: Fitted with a standard 8‑mm measuring probe, M10×1 universal mounting thread and 10‑mm medium‑length unthreaded probe segment, it is perfectly suited for machinery with moderately‑thick guards, medium‑depth mounting holes and standard‑depth measuring‑points. It covers both shallow installation scenarios for short probes and ultra‑deep installation scenarios for extended probes, delivering wider application coverage, firm installation, precise positioning and zero mounting interference. It 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, offering exceptional versatility.
- Factory precision calibration ensuring long‑term high‑accuracy linear stability: Manufactured with precision‑wound coils and special factory‑calibration procedures for medium‑length probes, 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 effectively mitigates measurement‑offset risks common among medium‑length probes. It captures micron‑scale vibration and displacement changes on rotating shafts accurately, 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 standard neat‑layout‑wiring in equipment rooms: Adopting a lightweight flexible non‑armoured shielded cable together with a compact reinforced stainless‑steel housing, the wear‑resistant cable enables flexible wiring. It is applicable to most power‑equipment rooms 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 medium‑depth 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. The 10‑mm medium‑length probe is built as an integrated reinforced unit with excellent bending‑resistance, deformation‑resistance and fatigue‑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 sensors.
- Full‑enclosure electromagnetic‑shield design for distortion‑free signals under complex‑site conditions: A fully‑wrapped electromagnetic‑protection structure is equipped with an original corrosion‑resistant anti‑interference miniature co‑axial 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 semi‑enclosed medium‑depth 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 maintenance for cost‑saving‑efficiency gains: The probe and cable are fabricated from special‑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, reduce maintenance workload and downtime‑related losses for equipment with medium‑depth measuring‑points and improve overall maintenance efficiency.
4. Specifications
Basic Parameters
Product Model: 330103‑00‑10‑10‑02‑00 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 medium‑length‑probe non‑armoured non‑contact shaft‑vibration and axial‑displacement monitoring sensor Structural Specification: M10×1 standard mounting thread, 10‑mm medium‑length unthreaded probe length, regular non‑armoured shielded cable, 1‑metre factory‑supplied standard cable, standard miniature co‑axial connector Applicable Standards: API 670 Machinery‑Protection Standard, IEC Industrial‑EMC Standard, Bently‑Nevada factory precision‑measurement specifications for medium‑length probes Primary Purpose: Radial shaft‑vibration, axial‑displacement, shaft‑eccentricity and key‑phase speed monitoring for rotating units under medium‑depth installation conditions; data acquisition for regular‑depth 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, 10‑mm medium‑length unthreaded section, 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, excellent measurement consistency under medium‑depth installation 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 medium‑depth measuring‑points Measurement Characteristics: Dual‑mode high‑precision output for high‑frequency dynamic‑vibration acquisition and steady‑state static‑displacement measurement, strong measurement stability for medium‑length probes
Mechanical & Physical Parameters
Structural Features: M10 standard‑thread probe, 10‑mm medium‑length unthreaded universal medium‑depth section, reinforced stainless‑steel housing, 1‑metre non‑armoured shielded cable, corrosion‑resistant sealed miniature connector, anti‑vibration reinforced integrated construction Mounting Method: M10 thread‑locked fixed installation, suitable for medium‑depth and regular‑guard standard‑thread measuring‑point layouts Maintenance Characteristics: No routine calibration or frequent maintenance required; deformation‑resistant probe, easy disassembly for fast‑swap servicing at regular medium‑depth 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 medium‑depth measuring‑points, suitable for 7×24‑hour continuous on‑line monitoring of industrial machinery
5. Application Scenarios
The Bently Nevada 330103‑00‑10‑10‑02‑00 sensor is widely deployed in TSI condition‑monitoring systems for high‑speed heavy‑duty rotating power‑machinery with moderately‑thick guards, medium‑depth mounting holes and standard‑wiring conditions, 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 standard sensing hardware for fault prediction, safety interlock protection and stable‑operation maintenance of large rotating‑equipment in universal medium‑depth‑installation scenarios.
Typical applications include round‑the‑clock shaft‑vibration and axial‑displacement monitoring at medium‑depth measuring‑points on regular‑thickness guards of turbo‑generator sets; high‑precision shaft‑eccentricity deformation and key‑phase speed acquisition at standard‑depth mounting locations of gas turbines; condition monitoring of centrifugal compressors under regular‑site conditions in refining‑plants; dynamic‑parameter acquisition at medium‑depth measuring‑points on large‑scale industrial induced‑draught fans, forced‑draught fans and circulating‑water pumps; hardware fitting for universal medium‑depth standard‑thread measuring‑points; deployment of machinery‑monitoring‑systems for neat‑layout‑wiring new‑build projects; original‑equipment replacement of aged 10‑mm medium‑length‑probe sensors on legacy machinery; accuracy‑upgrade retrofits for monitoring‑systems at regular‑depth measuring‑points; unattended on‑line monitoring of large‑and‑medium‑size power‑equipment; vibration‑anomaly fault diagnosis and trend analysis at medium‑depth machinery measuring‑points; compliance‑monitoring hardware for industrial rotating‑machinery at universal measuring‑points; and data acquisition for predictive maintenance of industrial equipment.
As a universal high‑precision non‑armoured eddy‑current sensor within the 3300 XL series (M10 thread, 10‑mm medium‑length unthreaded probe, 1‑metre cable), it combines the installation advantages of short probes for shallow locations and long probes for deep locations and delivers outstanding versatility. Its core strengths include standard‑thread mounting, 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: insufficient installation depth for short probes and excessive depth redundancy for ultra‑long probes. 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 medium‑depth measuring‑points, and comprehensively guarantees long‑term safe, stable, efficient and compliant operation of large‑and‑medium‑size rotating power‑machinery under universal operating‑conditions. It is the preferred original‑equipment universal core sensor for new‑system deployment, legacy‑system retrofits and fault‑repair maintenance projects of rotating‑machinery condition‑monitoring systems for regular medium‑depth industrial measuring‑points.
