21747-040-00 Proximitor Probe Extension Cable

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	21747-040-00
Minimum Order Quantity:	1
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 21747-040-00 Proximitor Probe Extension Cable is a high-precision signal transmission component engineered by Bently Nevada for legacy 7200 series proximity transducer systems. As a critical link in the machinery protection chain, the 21747-040-00 Proximitor Probe Extension Cable facilitates the seamless transfer of eddy current signals from the proximity probe to the Proximitor sensor. This specific 21747-040-00 Proximitor Probe Extension Cable configuration features a 4.0-meter (13.1 feet) length, designed for industrial environments where precision and electrical stability are non-negotiable.

Utilizing a specialized coaxial architecture, the 21747-040-00 Proximitor Probe Extension Cable maintains the exact capacitance and impedance required to ensure linear vibration and position measurements. Because the 7200 series system relies on a tuned circuit, using an authentic 21747-040-00 Proximitor Probe Extension Cable is vital for preventing scale factor errors. The 21747-040-00 Proximitor Probe Extension Cable is built with high-grade FEP insulation, providing exceptional resistance to moisture, oil, and chemical corrosion found in petrochemical and power generation facilities.

Applications

The 21747-040-00 is primarily utilized in mid-range signal transmission for medium-sized rotating machinery such as centrifugal pumps, motors, and small steam turbines. With its 4.0-meter length, it acts as the essential bridge between the bearing-mounted proximity probe and the Proximitor sensor located in a nearby local junction box. This length is specifically chosen for applications where the 1.0-meter integrated probe lead is insufficient, yet the distance does not require the bulk of longer 9-meter systems, ensuring optimal signal-to-noise ratios in standard industrial layouts.

This extension cable is extensively applied in harsh fluid environments, including oil-mist lubrication systems and coolant-heavy machining areas. The Fluorinated Ethylene Propylene (FEP) jacket is designed to resist degradation from hydraulic fluids and synthetic oils, which is critical for maintaining the dielectric properties of the cable. In chemical processing plants, the 21747-040-00 serves as a reliable conduit for signals coming from agitators and mixers, where the cable may be exposed to corrosive vapors that would typically compromise standard commercial grade coaxial wiring.

Specifications

Competitive Advantage

Precision Impedance Matching for Legacy Support The 21747-040-00 is specifically calibrated to the 50 Ω output resistance and internal capacitance required by the 7200 series systems. Unlike generic coaxial alternatives, this cable ensures that the system’s scale factor remains at exactly 200 mV/mil (7.87 V/mm). This precision prevents calibration errors that could lead to undetected machinery wear or catastrophic failure in older but still vital industrial assets.

Superior Thermal Resilience and Material Integrity With an operating temperature range extending from -55°C to +175°C, the 21747-040-00 offers a significant advantage over standard industrial cables. The use of high-performance PPS and stainless steel connectors allows the cable to maintain its structural and electrical integrity in extreme cold or intense heat. This resilience prevents the cable jacket from cracking or melting, ensuring continuous monitoring in the most demanding turbomachinery environments.

Optimized Flexibility without Armor By choosing the non-armored "00" option, users benefit from a significantly smaller bend radius and a lightweight profile of only 0.25kg. This allows for much easier routing through tight spaces and complex internal machine passages where armored cables would be too rigid or bulky. This ease of installation reduces labor time during maintenance turnarounds and minimizes mechanical stress on the delicate miniature coaxial ClickLoc connectors.