330104-03-07-05-02-05 Proximity Transducer System (PTS)
Description:
The part number 330104-03-07-05-02-05 refers to a specific configuration of a 5 mm Proximity Transducer System (PTS) from Baker Hughes (Bently Nevada). This is a complete, pre-calibrated kit designed for a single channel of measurement on rotating machinery, specifically used in applications where space is highly constrained and a smaller probe diameter is required.
It is an integrated package that contains all matched components for immediate installation:
One 5mm Proximity Probe
One Extension Cable
One Proximitor (Oscillator/Demodulator)
This system functions identically to standard systems but uses a smaller 5mm diameter probe. It measures the distance between the probe tip and a conductive target to monitor radial vibration, axial position, or speed (Keyphasor). The specific suffixes in the part number define its exact physical configuration for specialized applications.
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 | 330104-03-07-05-02-05 |
| System Type | 5 mm Proximity Transducer System (PTS) |
| System Function | Vibration / Position / Keyphasor® Measurement |
| Probe Length | -07- = 7 mm (0.28 inches) from mounting thread to tip. This is a very short probe. |
| Probe Diameter | 5 mm (specified by the "330104" prefix) |
| Connector Type | -05- = 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 | -05 = Likely refers to a standard 5-meter (16.4 ft) coaxial cable and a specific 5mm Proximitor version. |
| Special Configuration | -03- = May indicate a special calibration, target material, or connector variant. |
| Target Material | AISI 4140 Steel or equivalent (standard for calibration). |
| Linear Range | 0.1 to 0.8 mm (4 to 32 mils) - typical for 5mm systems. |
| 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 | ~ 0.06 kg (0.13 lbs) |
| Typical Proximitor Weight | ~ 0.5 kg (1.1 lbs) |
| Mounting Thread | A smaller thread size compatible with the 5mm probe body (e.g., 10-32 UNF). |
Important Note: *The interpretation of the "-03-" suffix is critical and non-standard; it could indicate a special calibration, high-temperature rating, or connector variant. The official Baker Hughes Bently Nevada PTS Selection Guide must be consulted for this exact part number's specifications. The very short 7mm length and 5mm diameter indicate extreme space constraints.*
Application Scenarios
This 5 mm Proximity Transducer System is designed for applications where even a standard 8 mm probe is too large to fit. Its compact 5mm diameter and very short 7mm length make it suitable for the most demanding space-constrained applications on small or high-density machinery.
Vibration Monitoring on Ultra-Compact Machinery: The primary application is on machines with extremely limited radial space for probe installation, such as:
High-Speed Pinion Shafts in gearboxes
Small Turbines and Turboexpanders
Miniature Compressors and Pumps
Keyphasor® Reference in Extremely Tight Spaces: Used as a once-per-revolution timing probe in applications where the mounting location is severely restricted and only a very short, small-diameter probe can be physically installed.
Axial Position Monitoring on Miniature Thrust Assemblies: Used to measure thrust position on very small machines or assemblies where the axial space between the thrust collar and nearby stationary structure is minimal.
Integrally Geared Compressors: Frequently used on the high-speed pinion shafts of integrally geared compressors, where space between gear meshes and bearings is extremely limited.
Research and Development and Precision Test Rigs: Used in laboratory settings and benchtop test rigs for small-scale rotordynamic research and precision measurements where minimal intrusion and small size are paramount.
Typical Machinery:
High-Speed Pinion Shafts in Gearboxes
Turbochargers
Small Integrally Geared Compressors
High-Speed Motors and Spindles
Specialized OEM rotating equipment with severe space limitations
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