21747-085-00 Proximitor Probe Extension Cable

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	21747-085-00
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 21747-085-00 Proximitor Probe Extension Cable is specifically optimized for the Bently Nevada 7200 series, which remains a cornerstone in many industrial plants worldwide. Even as a legacy product, the 21747-085-00 is indispensable for maintenance and spare parts inventory. Utilizing an original 21747-085-00 ensures that the machinery protection system (MPS) receives accurate data. The connectors of the 21747-085-00 are gold-plated to prevent oxidation and ensure low-resistance contact, which is crucial for maintaining the linearity and sensitivity of the vibration signal.

Choosing the genuine 21747-085-00 Proximitor Probe Extension Cable is a commitment to plant safety. Any deviation in cable length or capacitance can lead to measurement errors, potentially causing false alarms or, more critically, failing to detect a real machinery fault. Whether you are replacing a worn-out cable during a turnaround or maintaining a critical asset, the 21747-085-00 provides the reliability and performance required for the most demanding industrial environments.

In summary, the 21747-085-00 Proximitor Probe Extension Cable is a specialized solution for 7200 series users. With its 8.5-meter length and non-armored design, the 21747-085-00 continues to be the preferred choice for engineers seeking to maintain the integrity of their Bently Nevada monitoring systems.

Applications

1.Long-Reach Signal Transmission for Large Machinery

The primary application of the 21747-085-00 is in large-scale rotating equipment where the Proximitor sensor must be mounted at a significant distance from the actual measurement point. With a cable length of 8.5 meters (27.9 feet), it is ideal for massive turbine trains or large pumps where the junction boxes are located outside of the machine's primary acoustic or thermal enclosure. It ensures the signal remains clean over the distance, maintaining a stable 50 Ω output resistance.

2.Monitoring in Explosive and Hazardous Atmospheres

This cable is purpose-built for the energy and chemical sectors, carrying CSA, ATEX, and IECEx approvals. It is applied in "Zone 0" or "Division 1" environments where flammable gases or vapors are frequently present. By meeting these global safety standards, the 21747-085-00 allows for safe vibration and position monitoring on refinery compressors, offshore oil platform pumps, and gas processing equipment without risking ignition.

3.High-Temperature Turbine and Exhaust Environments

Designed to withstand an extreme operating temperature range of -55°C to +175°C, this cable is frequently applied in the "hot zones" of steam and gas turbines. It is used to route signals from internal bearing housings through the machine's casing. The Polyphenylene sulfide (PPS) and Stainless Steel (SST) materials used in the system ensure that the extension cable remains electrically stable even when subjected to intense thermal cycling near steam lines.

Specifications

Competitive Advantage

1.Global Hazardous Area Compliance

Unlike standard coaxial cables, the 21747-085-00 comes with Triple Agency Approvals (CSA, ATEX, and IECEx). This provides a significant competitive edge for multinational engineering firms and oil & gas operators. It allows for a single part number to be used across global sites, ensuring that the vibration monitoring system meets the most stringent international standards for intrinsic safety in explosive atmospheres.

2.Extreme Thermal Resilience

While many cables become brittle or fail at high temperatures, this extension cable is rated for an expansive operating range of -55°C to +175°C. This resilience allows it to be routed through the hottest sections of a gas turbine or steam compressor without degrading. This thermal stability ensures that the Supply Sensitivity (less than 2 mV change) remains low, preventing temperature-induced "false alarms" in the vibration monitoring rack.

3.Precision "ClickLoc" Connection Technology

The cable features the patented Miniature coaxial ClickLoc connector. This system provides a tactile and audible "click" that confirms a secure, vibration-proof connection. In the competitive landscape, this is a major advantage over traditional threaded connectors, which can vibrate loose over time and cause intermittent signal loss. The ClickLoc system ensures 100% signal uptime even on machines with high structural resonance.

4.Enhanced Flexibility and Ease of Routing

Because this specific model is configured Without Stainless Steel Armor, it offers superior flexibility and a smaller bending radius. This makes it much easier to install in tight conduits or complex cable trays compared to bulkier armored versions. Weighing only 0.25kg, it reduces the mechanical load on junction box connectors and simplifies the process of routing cables through the intricate internal passages of modern turbomachinery.