21504-12-28-10-02 Standard Mount Probe

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	21504-12-28-10-02
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 21504-12-28-10-02 defines excellence as a quintessential Standard Mount Probe within Bently Nevada's premier 3300 XL 8 mm series. Engineered in the USA, this eddy current transducer establishes the fundamental reference point for precise gap measurement in industrial machinery protection. Its core function is to generate a highly linear voltage output directly proportional to the distance between its probe tip and a conductive target surface. This reliable operation makes the 21504-12-28-10-02 Standard Mount Probe an indispensable sensor for capturing both dynamic vibration and static positional data, serving as the primary input for condition monitoring and predictive maintenance programs on critical rotating assets worldwide.

Built for unwavering performance in demanding environments, this Standard Mount Probe is a testament to robust engineering. The probe tip is crafted from durable Polyphenylene Sulfide (PPS), providing superior resistance to chemical degradation and wear, while the housing is precision-machined from solid AISI 303 or 304 stainless steel, ensuring exceptional corrosion resistance and mechanical integrity. Designed to comply with the rigorous American Petroleum Institute (API) 670 standard, the probe delivers proven stability across an extensive operating temperature range, guaranteeing accurate and repeatable measurements on critical machinery in sectors such as power generation, oil and gas, and petrochemicals, where sensor failure is not an option.

A key strength of the 21504-12-28-10-02 lies in its seamless integration and simplified logistics. As a genuine component of the 3300 XL system, it offers complete interchangeability with all corresponding 3300 XL extension cables and Proximitor monitors, eliminating the need for time-consuming and costly individual component matching or field calibration. This “plug-and-play” philosophy streamlines installation, reduces spare part inventory complexity, and enables rapid replacement to minimize machine downtime. ​

Applications

1.Foundational Vibration Monitoring for Rotating Machinery

This Standard Mount Probe serves as the primary sensor for continuous radial vibration measurement on a vast array of equipment, including centrifugal pumps, industrial fans, electric motors, and steam turbines. Its reliable output is fundamental for detecting mechanical faults such as imbalance, misalignment, and early-stage bearing issues, forming the backbone of basic to advanced condition monitoring programs.

2.Thrust Bearing and Axial Position Surveillance

The probe is routinely deployed to monitor axial shaft position (float) and thrust bearing condition in critical turbomachinery like compressors and gas turbines. Its precise measurement of static position is vital for ensuring rotating elements operate within safe mechanical clearances, preventing catastrophic failures and enabling predictive maintenance.

3.Keyphasor Reference and Rotational Speed Detection

Ideal for generating a Keyphasor® timing signal by observing a keyway or notch on a shaft, this probe provides the essential phase reference needed for advanced diagnostics, dynamic balancing, and startup/shutdown analysis. It also functions as a highly accurate speed pickup for overspeed protection systems.

4.Core Component in API 670 Compliant Protection Systems

Engineered to meet the stringent requirements of API 670, this Standard Mount Probe is specified for use on “Category 1” machinery in refineries, petrochemical plants, and power generation facilities. Its certified performance is crucial for compliance, safety, and the protection of high-value capital assets.

5.System Retrofit and Direct Replacement Applications

Due to its standard design and full compatibility with the 3300 XL platform, the 21504-12-28-10-02 is the perfect solution for modernizing existing installations or replacing legacy probes. It allows for easy system upgrades and maintenance without requiring changes to the existing mounting or monitoring infrastructure.

Specifications

Competitive Advantage

1.Uncompromising Robustness and Industrial Design

Constructed with an AISI 303/304 SST body and PPS probe tip， this Standard Mount Probe is built to withstand harsh industrial environments， including exposure to oils， chemicals， moisture， and extreme temperatures from -52°C to +177°C. This durability translates to longer service life， reduced sensor failure rates， and lower total cost of ownership.

2.Guaranteed Full System Interchangeability

As an integral part of the 3300 XL series， it guarantees 100% interchangeability with all system components. This eliminates the need for matched sets or post-installation calibration， dramatically simplifying spare parts management and enabling faster， error-free replacements during critical maintenance windows.

3.Integrated Cable with Secure ClickLoc Connection

Featuring a factory-attached 0.5-meter cable and a Miniature ClickLoc connector， the probe ensures optimal signal integrity from inception. This design removes a potential point of failure， provides excellent strain relief， and allows for quick， secure， and tool-free connection to system cabling， enhancing overall installation reliability.

4.Proven Performance Compliant with API 670

Its design and manufacturing process adhere to the strict API 670 standard， a critical requirement for machinery protection in high-risk industries. This compliance provides engineers and plant operators with verified performance data and the assurance that the probe meets globally recognized benchmarks for reliability and accuracy.

5.Versatile and Trusted Standard Mount Configuration

The standard mounting design with an overall case length of 60 mm and 0 mm unthreaded length offers universal applicability for the majority of measurement points on rotating equipment. This versatility reduces application engineering time， ensures widespread installer familiarity， and makes it a trusted， go-to solution for a broad spectrum of vibration and position monitoring needs.