330930-065-00-00 Proximity Transducer System (PTS)
Description:
The part number 330930-065-00-00 refers to a 3300 XL 8mm Proximity Transducer System from Baker Hughes (Bently Nevada). This is a complete, pre-calibrated kit designed for a single channel of machinery monitoring, specifically for measuring radial vibration or axial position on rotating equipment.
This system represents a newer generation (XL series) of transducer systems, offering improved temperature stability and signal integrity over older models. The kit includes all necessary, matched components for immediate installation:
One 8mm Proximity Probe
One Extension Cable
One Proximitor (Oscillator/Demodulator)
The key identifier -065- in the part number specifies the critical probe length.
Parameters & Specifications
The following table details the key parameters for this specific configuration based on the standard Bently Nevada part numbering scheme.
| Parameter | Specification / Interpretation |
|---|---|
| Part Number | 330930-065-00-00 |
| System Type | 3300 XL 8mm Proximity Transducer System (PTS) |
| System Function | Vibration / Position Measurement |
| Probe Length | -065- = 65 mm (2.56 inches) from mounting thread to tip. |
| Probe Diameter | 8 mm (standard) |
| Connector Type | -00- = Standard "English" Thread (UNF 5/8-24) on the probe. |
| Cable Length | -00 = Typically indicates a standard 5-meter (16.4 ft) extension cable is included. The exact length should be verified with the datasheet. |
| Proximitor Model | 330930 (3300 XL 8mm System Proximitor) |
| Target Material | AISI 4140 Steel or equivalent (standard for calibration). |
| Linear Range | 0.2 to 0.9 mm (8 to 36 mils) |
| Scale Factor | 7.87 V/mm (200 mV/mil) ± 2% |
| Power Supply | -18 VDC to -26 VDC (Typically from a rack or external power supply) |
| Output Signal | -1 V to -11 VDC (for a 2-wire system) or 0 to -22 VDC (for a true 2-wire system), proportional to the gap. |
| Typical Probe Weight | ~ 0.1 kg (0.22 lbs) |
| Typical Proximitor Weight | ~ 0.5 kg (1.1 lbs) |
| Operating Temperature (Probe) | -40°C to 177°C (-40°F to 350°F) [Standard cable] |
Important Note: *The exact cable length and final specifications for the "-00-00" suffix must be confirmed with the official Baker Hughes Bently Nevada 3300 XL 8mm PTS Datasheet. The dimensions and weights provided are typical values.*
Application Scenarios
This 3300 XL Proximity Transducer System is used for high-reliability machinery protection across various industries. Its applications are critical for preventing machine failure and enabling predictive maintenance.
Shaft Radial Vibration Monitoring: The primary use. It measures the dynamic motion of a rotor relative to its bearings, providing essential data to detect and protect against:
Imbalance
Misalignment
Shaft Rubs
Fluid-induced instabilities (e.g., Oil Whirl)
Shaft Axial Position (Thrust) Monitoring: Used to monitor the position of a rotor in the axial direction to prevent damage from:
Excessive thrust bearing wear
Rotor-to-stator contact during thermal expansion
Keyphasor® Reference Signal: A dedicated proximity probe system is often used to generate a once-per-revolution pulse. This signal is critical for measuring rotational speed and vibration phase angle, which are indispensable for machine diagnostics and balancing.
Eccentricity Monitoring: Measures the slow-roll runout or bow of a shaft at low speeds during startup and coast-down.
Differential Expansion Monitoring: On large steam turbines, it measures the relative growth between the rotor and the stationary casing.
Typical Machinery:
Steam Turbines & Gas Turbines
Centrifugal & Axial Compressors
Large Pumps & Fans
Turbo-generators
Gearboxes
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7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
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