330101-23-41-10-02-05 Proximity Transducer System (PTS)
Description:
The part number 330101-23-41-10-02-05 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 | 330101-23-41-10-02-05 |
| System Type | Proximity Transducer System (PTS) |
| System Function | Vibration / Position / Keyphasor® Measurement |
| Probe Length | -23- = 23 mm (0.91 inches) from mounting thread to tip. |
| Probe Diameter | 8 mm (standard, indicated by the "330101" prefix) |
| Connector Type | -10- = Standard "English" Thread (UNF 5/8-24) on the probe. |
| Cable Length | -41- = 41 feet (12.5 meters) of integral cable plus extension cable. |
| Proximitor Model | -05 = Likely refers to a standard 5-meter (16.4 ft) coaxial cable and a specific Proximitor version (e.g., 330100 or 3300 XL 8mm). |
| 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 | ~ 0.1 kg (0.22 lbs) |
| Typical Proximitor Weight | ~ 0.5 kg (1.1 lbs) |
Important Note: *The interpretation of the "-02-" suffix should be confirmed with the official Baker Hughes Bently Nevada PTS Selection Guide. The 23mm probe is a short, common length, and the 41-foot cable is suitable for medium-distance runs.*
Application Scenarios
This Proximity Transducer System is a versatile solution for general machinery protection. The 23mm probe length is a standard size, offering a good balance for many applications, while the 41-foot cable provides flexibility for installations where the proximitor is located a moderate distance from the machine.
Shaft Radial Vibration Monitoring: The primary application. It measures the dynamic motion of a rotor relative to its bearings to detect and protect against common faults like:
Imbalance
Misalignment
Shaft Rubs
Oil Whirl
Shaft Axial Position (Thrust) Monitoring: Used to monitor the position of a turbine or compressor rotor in the axial direction to prevent catastrophic thrust bearing failure.
Keyphasor® Reference Signal: A dedicated proximity probe system is used to generate a once-per-revolution pulse. This signal is critical for measuring rotational speed (RPM) and vibration phase angle, which are indispensable for machine diagnostics and balancing.
General Purpose Machinery Protection: Ideal for a wide range of rotating equipment in industries such as oil and gas, power generation, and water treatment where reliable vibration and position monitoring are required.
Retrofits and System Upgrades: The specific cable length and probe size make it suitable for replacing existing systems or adding new points where the existing conduit and cable run are already established.
Typical Machinery:
Steam Turbines & Gas Turbines
Centrifugal & Axial Compressors
Pumps & Fans
Electric Motors & Generators
Gearboxes
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