330103-00-11-90-02-CN Proximity Transducer System (PTS)
Description:
The part number 330103-00-11-90-02-CN 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 unique suffix -CN in this part number often indicates a specific regional or special configuration, which may relate to packaging, documentation, or a minor component variation for a particular market (e.g., China).
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 | 330103-00-11-90-02-CN |
| System Type | Proximity Transducer System (PTS) |
| System Function | Vibration / Position / Keyphasor® Measurement |
| Probe Length | -11- = 11 mm (0.43 inches) from mounting thread to tip. |
| Probe Diameter | 8 mm (standard, indicated by the "330103" prefix) |
| Connector Type | -90- = 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 | -CN = Likely a standard 3300 XL 8mm Proximitor with a specific regional designation (e.g., for the Chinese market), potentially affecting packaging or included documentation. |
| 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 "-CN" suffix is not standard and is a manufacturer-specific designation. For absolute certainty regarding its meaning and for precise mechanical details, consulting the official Baker Hughes Bently Nevada PTS Selection Guide or a direct datasheet for this exact part number is essential. The 11mm probe is a relatively short length, suitable for space-constrained applications.*
Application Scenarios
This Proximity Transducer System is a versatile solution for machinery protection. The 11mm probe length is a common size, offering a good balance between being compact enough for many applications while providing sufficient thread engagement for secure mounting.
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
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.
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.
OEM Machinery: Often specified by Original Equipment Manufacturers (OEMs) for building into their standard machine packages.
Typical Machinery:
Steam Turbines & Gas Turbines
Centrifugal & Axial Compressors
Pumps & Fans
Electric Motors & Generators
Gearboxes
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