Introduction
The component with part number 330780-52-00 is a 10-meter (approx. 32.8 feet) coaxial cable assembly used with Bently Nevada* proximity transducer systems. This part number refers to the extension cable that connects a proximity probe directly to a Proximitor® driver module.
This cable is a critical link in the vibration and position measurement chain. Its primary function is to reliably carry the high-frequency radio frequency (RF) signal from the probe to the signal conditioning electronics without degradation or interference. The robust construction, typically featuring a flexible metal conduit or braided shielding, protects the inner coaxial conductor from physical damage, moisture, and electromagnetic interference, ensuring signal integrity in harsh industrial environments. The "-52-00" suffix typically denotes a 10-meter length.
*Bently Nevada is a part of Baker Hughes.
Parameters
The following table outlines the key technical parameters for the 330780-52-00 extension cable.
| Parameter | Specification |
|---|---|
| Part Number | 330780-52-00 |
| Description | Proximitor to Probe Extension Cable |
| Length | 10 meters (32.8 feet) |
| Connector 1 | Standard Bently Nevada connector (mates with the probe) |
| Connector 2 | Standard Bently Nevada connector (mates with the Proximitor driver) |
| Conductor Type | Coaxial |
| Impedance | 50-52 Ohms |
| Shielding | High-quality braided shield or metal overbraid for EMI protection. |
| Outer Jacket | Typically a durable, oil-resistant PVC or similar material. |
| Operating Temperature | -34°C to 177°C (-29°F to 350°F) or similar |
| Diameter | Approx. 6 mm to 8 mm (0.24 in to 0.31 in) |
| Weight (per meter) | Approx. 0.1 kg/m (0.22 lb/m) |
| Total Weight (10m) | Approx. 1.0 kg (2.2 lb) |
Application Scenarios
The 330780-52-00 extension cable is an essential component in any machinery monitoring system that uses proximity probes. Its application is fundamental to the installation and operation of the system.
Completing the Transducer System:
It forms the physical and electrical link between the proximity probe (e.g., an 8mm probe) and the Proximitor driver (e.g., a 3300 XL 8mm driver), creating a complete, functional vibration/position measurement channel.
Routing Signals over Longer Distances:
The 10-meter length allows the sensitive Proximitor electronics to be located further away from extreme heat, high vibration, and weather, typically inside a protected junction box, while the probe remains at the measurement point on the machine.
Ensuring Signal Integrity over Distance:
The precise 50-ohm impedance and high-quality shielding are critical for maintaining the accuracy and stability of the gap voltage signal over this longer distance, preventing signal loss, noise, or distortion that could lead to false readings or alarms.
Providing Mechanical Protection:
The durable outer jacket and shielding protect the internal conductor from being cut, crushed, or abraded in crowded cable trays and demanding plant environments, ensuring long-term reliability over the extended cable run.
Standardized Installation on Critical Equipment:
Used in virtually all applications requiring radial vibration, thrust position, eccentricity, or Keyphasor® measurement on critical rotating equipment like turbines, compressors, pumps, and fans, especially where longer cable runs are necessary.
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