330103-00-04-20-02-00 Proximity Transducer System (PTS)
Description:
The part number 330103-00-04-20-02-00 refers to a specific configuration of a Proximity Transducer System (PTS) from Baker Hughes (Bently Nevada). This is a complete, pre-calibrated kit designed for a single channel of machinery monitoring, used to measure radial vibration, axial position, or speed on rotating equipment.
It is an integrated package that contains all matched components for immediate installation:
One 8mm Proximity Probe
One Extension Cable
One Proximitor (Oscillator/Demodulator)
The system works by the proximitor sending a high-frequency radio frequency (RF) signal to the probe. The probe creates an electromagnetic field, and changes in the distance to the conductive target (the shaft) affect the strength of this field. The proximitor detects these changes and converts them into a precise, proportional DC voltage output.
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 | 330103-00-04-20-02-00 |
| System Type | Proximity Transducer System (PTS) |
| System Function | Vibration / Position / Keyphasor® Measurement |
| Probe Length | -04- = 4 mm (0.16 inches) from mounting thread to tip. This is an extremely short probe. |
| Probe Diameter | 8 mm (standard, indicated by the "330103" prefix) |
| Connector Type | -20- = Standard "English" Thread (UNF 5/8-24) on the probe. |
| Cable Length | -02- = 2 meters (6.6 feet) of integral cable plus extension cable. |
| Proximitor Model | -00 = Specifies a particular Proximitor model (e.g., a standard 3300 XL 8mm 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) |
| Power Supply | Proximitor typically requires -18 VDC to -26 VDC. |
| Output Signal | -1 V to -11 VDC (or 0 to -22 VDC for two-wire systems) proportional to gap. |
| Operating Temperature (Probe) | Up to 177°C (350°F) with standard cable. |
| Typical Probe Weight | ~ 0.08 kg (0.18 lbs) |
| Typical Proximitor Weight | ~ 0.5 kg (1.1 lbs) |
Important Note: The extremely short 4mm probe length is a critical specification. For mechanical installation and confirmation of specifications, consulting the official Baker Hughes Bently Nevada PTS Selection Guide for this exact part number is essential.
Application Scenarios
This Proximity Transducer System is designed for applications with extreme space limitations. The 4mm probe length is one of the shortest available, making it suitable for applications where standard probes cannot physically fit.
Vibration Monitoring in Extremely Confined Spaces: The primary application is on machinery where the clearance between the probe mounting point and the target shaft is minimal.
Very Small Turbines and Turboexpanders
High-Density Gearboxes with limited internal clearance
Compact Motor-Driven Pumps
Keyphasor® Reference in Ultra-Tight Locations: Used as a once-per-revolution timing probe where axial or radial space for sensor installation is severely restricted.
Axial Position Monitoring on Thin Thrust Collars: Used in applications where the thrust collar has a very small axial runout surface.
Integrated OEM Machinery with Severe Design Constraints: Specified by Original Equipment Manufacturers (OEMs) for building into compact machinery designs where internal space is critically limited.
Specialized Research and Development Applications: Used in laboratory test rigs and precision measurement systems where standard probe lengths would cause mechanical interference.
Typical Machinery:
Micro-Turbines
High-Speed Precision Spindles
Compact Gearboxes
Specialized OEM Rotating Equipment
Research and Development Test Rigs
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