Description
Bently Nevada 330104-00-04-10-02-05
I. Basic Information
Model: 330104-00-04-10-02-05
Brand: Bently Nevada
Supported Platform: 3300 XL 8mm armored eddy current proximity sensor system, compatible with 3500 series TSI machinery protection rack.Product Type: Heavy-duty stainless steel armored 8mm non-contact eddy current probe, designed for radial vibration, axial displacement, key phase and rotating speed measurement of critical rotating equipment. Matched with dedicated armored extension cable and proximitor, it delivers stable measurement under high temperature, oil contamination and hazardous explosive conditions, widely used in predictive maintenance and safety interlock protection of power, petrochemical and metallurgical industries.
Model Code Explanation
330104: 3300 XL 8mm series probe, M10×1 metric thread, stainless steel armored cable structure00: Unthreaded length 0mm04: Total probe housing length 40mm10: Integral built-in armored cable length 1.0m02: ClickLoc miniature coaxial quick-lock connector with double inner shielded cable05: Certified with ATEX, IECEx, CSA intrinsic safety approval for hazardous area applications
Product Positioning
Compliant with API 670 industrial standard, this armored proximity probe adopts stainless steel flexible armored cable to resist mechanical extrusion, abrasion, oil corrosion and tension damage, specially designed for severe industrial working conditions. Featuring excellent linearity, wide-temperature stability and high EMC immunity, same-series probe, extension cable and proximitor are interchangeable without additional laboratory calibration. Equipped with high-temperature resistant PPS tip and hermetically sealed 304 stainless steel housing, it can operate stably up to 177℃, capturing early fault signals such as rotor unbalance, bearing wear and axial collision, acting as the core front-end sensing device for high-protection-level TSI monitoring system of heavy rotating machinery in hazardous and harsh sites.
Hardware Architecture
Consisting of four core functional units: high-frequency induction coil detection unit, high-temperature hermetic protection unit, armored double-shielded signal transmission unit and factory calibrated impedance matching unit. The alternating magnetic field generated by internal coil induces eddy current on the metal target surface, converting clearance variation into linear DC voltage signal for high-precision non-contact displacement measurement. The outer stainless steel armor greatly improves mechanical durability of the sensor cable for complicated field wiring scenarios.
Mounting & Supporting System
- Mounting Method: M10×1 threaded installation with anti-loose lock nut; recommended initial installation gap 1.27mm (-9VDC output)
- Minimum Cable Bending Radius: 8 times of cable outer diameter, avoid sharp bending and extrusion of armored cable
- System Matching Rule: Total length of probe cable plus extension cable must be consistent with rated length of the matched proximitor; 5m and 9m systems cannot be mixed
- Supporting Devices: 3300 XL armored proximitor, matched armored extension cable, TK-3 gap calibrator, 3500 monitoring rack
- Typical Application Industries: Thermal power plants, petrochemical compressor facilities, metallurgical heavy fan units, large pump sets under high-temperature, oil-polluted and hazardous explosive working conditions
Product Features
- Stainless steel flexible armored cable provides superior resistance to abrasion, tension, extrusion and oil corrosion, drastically reducing cable failure rate in complicated industrial sites.
- High linear measurement accuracy with 2mm effective span and standard sensitivity of 7.87V/mm, applicable for both static displacement and high-frequency dynamic vibration acquisition.
- Wide operating temperature range from -35℃ to +177℃ with built-in temperature compensation to eliminate thermal drift for high-temperature bearing housing measuring points.
- IP67 sealing plus multi-certified explosion-proof approval allows safe deployment in Zone 1 and Zone 2 hazardous flammable process areas.
- Same-series sensor components are fully interchangeable without recalibration, only gap calibration is required after spare part replacement to shorten maintenance downtime.
- Double inner shield plus outer armor realizes dual electromagnetic interference suppression, effectively preventing signal fluctuation and false protection caused by on-site high-power equipment radiation.
- Non-contact measuring mode eliminates mechanical wear, supporting 24/7 long-term continuous on-line monitoring with low life-cycle maintenance cost.
II. Technical Specifications
2.1 Electrical Parameters
- Sensor Type: 3300 XL 8mm armored eddy current proximity probe
- Nominal Sensitivity: 7.87 V/mm (±6.5% tolerance)
- Linear Measuring Range: 0.25mm ~ 2.3mm, effective linear span 2mm
- Recommended Install Gap: 1.27mm, corresponding output voltage -9VDC
- Frequency Response: 0～8kHz
- Probe DC Resistance: 7.45±0.5Ω
- Proximitor Power Supply: -17.5～-26VDC, Max. Operating Current 12mA
- Linearity Deviation: ≤±38μm
2.2 Mechanical Parameters
- Mount Thread: M10×1 metric external thread
- Unthreaded Length: 0mm; Total Housing Length: 40mm
- Built-in Cable Length: 1.0m, double inner shield + stainless steel armored outer sheath
- Connector Type: ClickLoc miniature coaxial quick-lock connector
- Tip Material: High-temperature resistant PPS; Housing Material: 304 stainless steel
- Ingress Protection Rating: IP67
2.3 Environmental Specifications
- Operating Temperature: -35℃ ~ +177℃
- Storage Temperature: -40℃ ~ +177℃
- Operating Humidity: 5%～95%RH (non-condensing)
- Compliance Standard: API 670 4th Edition
- MTBF: ≥280000 Hours
2.4 Physical Parameters
- Mounting Mode: Threaded fixed installation with anti-loose lock nut
- Net Weight: 265g
- Sealing Structure: Viton O-ring full hermetic sealing
III. Key Features
- Real-time radial vibration monitoring for heavy rotating equipment in abrasion-prone harsh sites to realize early warning of rotor unbalance, misalignment and bearing failure.
- High-precision axial displacement and differential expansion measurement to prevent axial friction and collision of turbine and compressor units under high-temperature and hazardous working conditions.
- Key phase pulse signal acquisition for rotating speed calculation, vibration spectrum analysis and dynamic balance correction of critical process equipment.
- Built-in wide-temperature compensation ensures stable measuring output for high-temperature bearing seat measuring points.
- Multi-standard explosion-proof certification meets electrical safety requirements for flammable and explosive petrochemical process plants.
- Standardized mechanical and electrical interfaces support rapid on-site spare part replacement with only gap calibration required before commissioning.
IV. Working Principle
The proximitor transmits high-frequency alternating excitation current to the internal coil of the armored probe, generating alternating magnetic field which induces closed eddy current loop on the surface of the measured metal target. The equivalent impedance of the coil changes linearly with the clearance between probe tip and metal surface, and the proximitor converts impedance variation into standardized negative DC voltage signal and transmits it to the 3500 monitoring module. Vibration and axial displacement cause real-time clearance fluctuation and voltage change, which is converted into physical displacement parameters for data trending, threshold alarm and safety interlock. With factory precise calibration, inner double shielding and outer stainless steel armor protection, the sensor maintains long-term stable measuring performance against high temperature, oil contamination, mechanical damage and electromagnetic interference, specially optimized for complicated and hazardous industrial measuring points.
V. Application Scenarios
- TSI safety monitoring for thermal and gas turbine generator units, covering vibration, axial displacement, rotating speed and key phase measurement of high-temperature bearing housings and densely wired measuring points.
- On-line condition monitoring for centrifugal compressors and expansion units in petrochemical hazardous process plants to realize surge and bearing fault early warning and avoid unplanned plant shutdown.
- Bearing vibration protection for metallurgical large blast furnace fans and sintering main exhaust fans under severe long-term vibration operating conditions.
- Predictive maintenance for heavy-duty oil and gas transfer pump sets with oil splashing and cable abrasion-prone measuring locations.
- Technical renovation and in-situ replacement of ordinary non-armored probes which frequently suffer cable damage in high-risk industrial sites, reusing existing proximitors, extension cables and monitoring configuration programs to reduce retrofit costs.
