21747-085-01 Proximitor Probe Extension Cable

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	21747-085-01
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 Bently Nevada 21747-085-01 Proximitor Probe Extension Cable is an essential, high-precision component engineered to extend the reach of proximity transducer systems within critical machinery protection frameworks. Specifically designed to interface seamlessly with the industry-renowned Bently Nevada 7200 series monitoring systems, this extension cable serves as a vital lifeline for accurate vibration and positional data transmission in demanding industrial settings. Measuring approximately 8.5 meters (27.9 feet) in length, this specific model features a standard cable construction without stainless steel armor, offering enhanced flexibility for simplified installation in confined spaces and complex cable routing paths. The cable is terminated with a precision-engineered miniature coaxial ClickLoc connector, renowned for delivering a secure, vibration-resistant connection confirmed by an audible click, thereby guaranteeing uninterrupted signal integrity.

The core function of the 21747-085-01 cable is to preserve the fidelity of low-voltage signals over distance, a critical factor for the reliability of any predictive maintenance program. Its electrical characteristics, including a stable 50 Ω output resistance and minimal supply sensitivity (less than 2 mV change per volt input variation), ensure that the signal linearity and sensitivity from the probe are maintained without degradation. This precision is paramount, as even minor deviations in cable capacitance or length can introduce measurement errors, leading to false alarms or, more critically, a failure to detect genuine machinery faults. The connectors are gold-plated to prevent oxidation and ensure consistently low-resistance contact over the cable’s operational lifespan.

Applications

This extension cable is deployed in large-scale rotating equipment such as steam turbines, gas compressors, and massive pump trains, where the distance between the proximitor probe mounting point and the monitoring system junction box can be substantial. Its 8.5-meter length ensures reliable, long-reach transmission of precise vibration and positional signals without loss of fidelity, maintaining the integrity of the machinery protection system’s data over extended runs in power generation and heavy industrial plants.

Certified with CSA, ATEX, and IECEx approvals, the cable is specifically applied in hazardous locations where flammable gases, vapors, or dust may be present. It enables safe condition monitoring on critical assets within refineries, offshore platforms, and chemical processing facilities, allowing for continuous equipment health assessment in Zone 0/Division 1 explosive atmospheres without risk of ignition, thus supporting operational safety protocols.

The cable’s robust construction and ability to operate in a temperature range from -53°C to +178°C make it ideal for high-temperature environments. It is routinely used to route signals from probes installed on or near hot machinery components, such as turbine bearing housings and exhaust sections, where thermal resilience is crucial to prevent cable degradation and ensure stable signal performance under severe thermal cycling conditions.

Specifications

Competitive Advantage

1.Certified for Global Use in Hazardous Environments

The 21747-085-01 holds triple agency approvals (CSA, ATEX, IECEx), a significant advantage over standard cables. This comprehensive certification allows multinational operators to standardize on a single part number for vibration monitoring in explosive atmospheres worldwide, simplifying procurement, ensuring compliance with the strictest international intrinsic safety standards, and reducing the risk associated with using non-certified components.

2.Superior Performance Across Extreme Temperatures

Engineered for exceptional thermal resilience, this cable operates reliably from -53°C to +178°C. This extreme range provides a competitive edge by ensuring signal stability and component integrity in both cryogenic applications and the high-heat zones of turbomachinery, effectively minimizing temperature-induced signal drift and preventing false alarms that can occur with lesser-grade extension cables.

3.Reliable, Vibration-Proof ClickLoc Connection System

Featuring the patented miniature coaxial ClickLoc connector, this cable offers a distinct advantage in connection reliability. The audible and tactile "click" confirms a secure, positive lock, preventing connectors from loosening due to machine vibration—a common failure point with threaded alternatives. This design guarantees consistent signal transmission and reduces maintenance interventions, ensuring 100% signal uptime.