I. Basic Product Information
Brand: Bently Nevada (a subsidiary of Baker Hughes)
Full Model Number: 330903-00-09-05-02-05
Product Series: 3300 XL NSv 11mm Narrow-Angle Eddy Current Proximity Sensor (probe + integrated armored cable assembly)
Standard Compliance: API 670 Rotating Machinery Protection Standard, Original Factory and Original Equipment from the United States
Adapter Compatibility: 330180 Series 11mm Special Adapter
Detailed Analysis of Model Segmentation
330903-00-09-05-02-05
330903: 11mm probe, M10×1 metric thread, stainless steel armored cable NSv narrow-angle series probe
00: Probe without exposed thread length of 0mm, thread starting from the probe end face
09: Probe housing total length 90mm (long housing, suitable for deep hole installation conditions)
05: Probe built-in integrated cable total length 0.5 meters
02: ClickLoc micro quick-lock coaxial connector, standard industrial shielded armored cable
05: Equipped with UL, CSA intrinsically safe explosion-proof certification, suitable for hazardous explosion-proof areas
Core Electrical Performance Parameters
Probe Head Diameter: 11mm
Linear Measurement Range: 0 – 4mm (0 – 160 mil)
Standard Sensitivity: 3.94 V/mm (100 mV/mil)
Adapter Power Supply: -17.5VDC to -26VDC
Operating Temperature Range: -35℃ to +175℃; Storage Temperature: -55℃ to +175℃
Installation Thread: M10×1 metric fine-threaded screw
Cable Structure: Double-layer shielding + stainless steel armor, resistant to oil contamination, compression resistance, and electromagnetic interference
Main Functional Applications
Non-contact measurement of radial shaft vibration, axial displacement, shaft runout, eccentricity, and differential expansion of rotating equipment
Phase alignment speed measurement, rotational speed monitoring, providing synchronous phase signals for rotor fault spectrum analysis
Output gap voltage signal connected to 3500 monitoring system to achieve over-limit alarm, unit interlock shutdown protection
Online condition monitoring and predictive maintenance of key equipment such as steam turbine units, compressors, large pumps, fans, etc.
Structure and Environmental Characteristics
Probe end uses high-temperature PPS insulating material, resistant to lubricating oil, water vapor, and dust corrosion
Protection Grade: Probe body IP67, capable of stable operation in harsh oil and moisture conditions
Excellent electrical isolation performance, capable of resisting strong electromagnetic interference from frequency converters and high-voltage switch cabinets
Explosion-proof Certification: Intrinsically safe type, suitable for explosion-proof hazardous areas in petrochemical, oil and gas, and chemical industries
90mm long housing design, suitable for deep installation holes of bearing seats, and small and sealed cavity installation scenarios
Typical Application Scenarios
Steam turbine units, induced draft fans, feedwater pumps of thermal power plants, in gas-fired power plants; large centrifugal compressors, booster compressors, steam turbines in safety protection systems of petrochemical, coal chemical industries
Large motors in metallurgy, cement, mining, state-of-the-art fans, large reciprocating units for condition monitoring
As a spare part replacement and equipment technical renovation and upgrading for Bently 3500 protection system
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