Product Introduction
The 31000-28-05-35-032-03-02 is a proximity probe system component, typically part of a high-performance eddy current probe assembly used for non-contact vibration and position monitoring. Designed for compatibility with Bently Nevada 3300 XL or similar 8 mm proximity probe systems, this model consists of a probe, extension cable, and proximitor combination. It is engineered to deliver exceptional linearity, temperature stability, and reliability for continuous monitoring of shaft dynamics in critical rotating machinery.
Parameters
| Parameter | Specification |
|---|---|
| Type | Proximity Probe System Component (8 mm Series) |
| Compatible System | Bently Nevada 3300 XL / 7200 Series (compatible) |
| Total Length (System) | 5.0 m (approx.) – probe, extension cable, and proximitor combined |
| Probe Diameter | 8 mm |
| Dimensions (Proximitor) | 3.4 in (86 mm) x 2.1 in (53 mm) x 1.2 in (30 mm) (approx.) |
| Weight (Complete Assembly) | 1.2 lbs (0.55 kg) (approx.) |
| Measurement Range | 2 mm (80 mils) linear range |
| Output Signal | -2 VDC to -18 VDC (proportional to gap) |
| Supply Voltage | -17.5 VDC to -26 VDC (for proximitor) |
| Operating Temperature | -40°F to +356°F (-40°C to +180°C) (probe tip) |
Application Scenarios
Radial Vibration Monitoring: Installed on journal bearings of steam turbines, gas turbines, and centrifugal compressors to measure shaft vibration relative to the bearing housing.
Axial (Thrust) Position Monitoring: Used to monitor shaft axial position, providing critical protection against thrust bearing wear and preventing rotor-to-stator rub.
Shaft Eccentricity Measurement: Deployed on large turbines to measure rotor bow during start-up and coast-down, ensuring safe operation before reaching critical speeds.
Keyphasor Reference: Functions as a once-per-turn reference signal for phase measurement, enabling advanced diagnostics such as balanced and orbit analysis.
Hazardous Area Applications: Suitable for use in potentially explosive environments (ATEX/IECEx certified variants) commonly found in oil refineries, petrochemical plants, and power generation facilities.
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