330104-00-08-50-02-00 Proximity Transducer System (PTS)
Description:
The part number 330104-00-08-50-02-00 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 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 the standard 8 mm 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).
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 | 330104-00-08-50-02-00 |
| System Type | 5 mm Proximity Transducer System (PTS) |
| System Function | Vibration / Position / Keyphasor® Measurement |
| Probe Length | -08- = 8 mm (0.31 inches) from mounting thread to tip. This is a very short probe. |
| Probe Diameter | 5 mm (specified by the "330104" prefix) |
| Connector Type | -50- = 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 5mm Proximitor). |
| 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 suffixes, especially the mounting thread for a 5mm probe, should be confirmed with the official Baker Hughes Bently Nevada PTS Selection Guide. The very short 8mm probe length and 2m cable indicate a specific application with severe space constraints.
Application Scenarios
This 5 mm Proximity Transducer System is designed for applications where a standard 8 mm probe is too large to fit. Its compact 5mm diameter and very short 8mm length make it suitable for very compact machinery or tight mounting locations.
Vibration Monitoring on Compact Machinery: The primary application is on machines with very limited radial space for probe installation, such as:
Small Turbines
High-Speed Pinion Gears
Compact Compressors and Pumps
Keyphasor® Reference in Tight Spaces: Used as a once-per-revolution timing probe in applications where the mounting location is extremely tight and only a very short, small-diameter probe can be physically installed without interfering with other components.
Axial Position Monitoring on Thrust Collars with Limited Clearance: Used to measure thrust position on assemblies where the axial space between the thrust collar and nearby stationary structure is minimal.
Integrated Equipment and OEM Machinery: Often specified by Original Equipment Manufacturers (OEMs) for building into their own machinery where internal space is at a premium and a standard probe would be too long.
Research and Development Test Rigs: Used in laboratory settings on small-scale test rigs and rotordynamic research equipment where precise measurements are needed with minimal intrusion.
Typical Machinery:
Small Steam Turbines
High-Speed Gearboxes (pinion shafts)
Turbochargers
Small Integrally Geared Compressors
High-Speed Motors and Spindles
Specialized OEM rotating equipment
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