The 330101-00-27-50-02-05 is a Bently Nevada 3300 XL series 8mm eddy current proximity probe, specifically designed for high-precision monitoring of shaft vibration, shaft displacement, key phase, and rotational speed in rotating machinery. It conforms to API 670 standards and is suitable for critical equipment such as steam turbines, compressors, pumps, and motors.

I. Model Code Analysis (330101-00-27-50-02-05)

330101: 3300 XL Series 8mm Eddy Current Probe (Standard Type)

00: Probe Type (Standard Unarmored)

27: Probe Housing Length 2.7 inches (approx. 68.6mm)

50: Extension Cable Length 5.0 meters

02: Cable Connector Type (Miniature Coaxial ClickLoc)

05: Probe Tip Protection/Coating (Standard Stainless Steel)

II. Core Technical Parameters

Measurement Principle: Eddy current effect, non-contact measurement

Probe Diameter: 8mm (3/8-24 UNF threaded mounting)

Linear Measurement Range: 0.25～2.3mm (10～90 mils); Full Scale 0～2mm

Sensitivity: 7.87V/mm (200mV/mil), ±5% Accuracy

Output Signal: DC Voltage -1～-17V DC (corresponding gap), dynamic vibration signal superposition

Power supply: -17.5～-26V DC from matching preamplifier (e.g., 330180)

Frequency response: 0～10kHz, covering the main vibration frequencies of rotating machinery

Linearity: ±0.5% of full scale

Resolution: 0.1μm (0.000004in)

Operating temperature: -40～+125℃ (probe body)

Protection rating: IP67 (probe tip)

Material: 316 stainless steel probe housing, corrosion resistant and high temperature resistant

III. System Composition and Accessories

Probe body: 330101-00-27-50-02-05 (8mm, 5m cable)

Extension cable: Integrated 5m coaxial cable, ClickLoc Connector, can be directly connected to the preamplifier

Preamplifier: 330180-XX-XX (signal conditioning, output to the monitoring system)

Monitoring System: Vibration/displacement monitoring cards such as 3500/40, 3500/42, and 3500/50

IV. Main Functions and Applications

Shaft Vibration Monitoring: Real-time capture of radial vibration, early warning of imbalance, misalignment, and bearing wear

Shaft Displacement Monitoring: Monitors axial movement, preventing rubbing between moving and stationary parts

Key Phase/Speed Measurement: Provides speed and phase references in conjunction with keyways for fault diagnosis

Typical Scenarios:

Petrochemical Industry: Steam turbines, centrifugal compressors, pump sets

Power Industry: Steam turbine generator sets, gas turbines

Metallurgy/Papermaking: Large motors, rolling mills, paper machines

Complies with API 670 standards, meeting safety interlocking and condition monitoring requirements

V. Installation and Usage Points

Installation Thread: 3/8-24 UNF, with matching mounting bracket and lock nut

Recommended Clearance Setting: Radial vibration commonly uses -9V DC (approximately 1.27mm) (Gap)

System Calibration: Probes, cables, and preamplifiers are interchangeable; no separate on-site calibration is required.

Cable Protection: Avoid strong electromagnetic interference; bending radius not less than 50mm.

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