Introduction
The component with part number 330850-51-00 is a 5-meter (approx. 16.4 feet) armored extension cable used with Bently Nevada* proximity transducer systems. This cable is a critical component that connects the proximity probe (sensor) installed on the machinery to the Proximitor® driver or a connector panel, which is typically located in a nearby junction box.
Its primary function is to reliably carry the high-frequency radio frequency (RF) signal from the probe to the conditioning electronics without degradation or interference. The robust, stainless steel armored construction protects the inner conductors from physical damage, moisture, and electromagnetic interference, ensuring signal integrity in harsh industrial environments. The "-51-00" suffix typically denotes a specific connector configuration and length.
*Bently Nevada is a part of Baker Hughes.
Parameters
The following table outlines the key technical parameters for the 330850-51-00 extension cable.
| Parameter | Specification |
|---|---|
| Part Number | 330850-51-00 |
| Description | Armored Extension Cable |
| Length | 5 meters (16.4 feet) |
| Connector 1 | Bently Nevada standard 3-pin female connector (mates with the probe) |
| Connector 2 | Bently Nevada standard 3-pin male connector (mates with the driver/panel) |
| Conductor | Coaxial, 50-52 Ohm impedance |
| Armor Material | Stainless steel |
| Inner Cable Jacket | Fluoropolymer (e.g., FEP, PFA) for high-temperature resistance |
| Operating Temperature | -34°C to 177°C (-29°F to 350°F) |
| Diameter | Approx. 6.4 mm (0.25 inches) |
| Weight (per meter) | Approx. 0.15 kg/m (0.33 lb/m) |
| Total Weight (5m) | Approx. 0.75 kg (1.65 lb) |
Application Scenarios
The 330850-51-00 extension cable is an essential part of 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 link between the proximity probe (e.g., a 5mm or 8mm probe) and the Proximitor driver (e.g., 3300 XL 8mm), creating a complete, functional vibration/position measurement channel.
Routing Signals from Harsh to Safe Areas:
The cable allows the sensitive electronics (the driver) to be located 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:
The precise 50-ohm impedance and armored shielding are critical for maintaining the accuracy of the gap voltage signal over distance, preventing signal loss or distortion that could lead to false readings or alarms.
Providing Mechanical Protection:
The stainless steel armor protects the internal wiring from being cut, crushed, or abraded in crowded cable trays and harsh plant environments, ensuring long-term reliability.
Standardized Installation:
Used in virtually all applications requiring radial vibration, thrust position, eccentricity, or Keyphasor® measurement on critical rotating equipment like turbines, compressors, pumps, and fans.
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