21504-00-16-10-02 Proximity Sensor Switch

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	21504-00-16-10-02
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 21504-00-16-10-02 Proximity Sensor Switch is a robust and highly reliable non-contact industrial limit switch engineered by Bently Nevada for critical safety and control applications in demanding operational environments. Unlike traditional mechanical limit switches with moving actuator arms, this proximity sensor switch utilizes advanced eddy current technology to detect the presence or absence of a conductive target without physical contact, thereby eliminating mechanical wear and ensuring exceptional long-term reliability. Designed for severe industrial service, this sensor is an essential component for position verification, sequence interlocking, and safety shutdown systems on rotating machinery, large valves, and linear actuators.

This versatile proximity switch offers configurable overall case length options of 90mm, 110mm, and 130mm, combined with a standard 25mm unthreaded length, providing significant flexibility for mounting in various spatial constraints within machine frames and enclosures. Its robust construction is complemented by an impressive array of global safety and agency certifications, including ATEX, IECEx, CSA, UL, and CE, making it fully compliant for deployment in hazardous locations and explosive atmospheres worldwide. The sensor is equipped with a standard 16-foot (4.88-meter) integral cable, terminated with a rugged MIL-DTL-26482 Series II 5-pin circular connector, ensuring a secure, vibration-proof, and environmentally sealed electrical connection that is resistant to moisture, dust, and chemical exposure.

Applications

This sensor is ideally used for critical valve position verification in process industries such as oil & gas and petrochemicals. Its non-contact sensing principle and ATEX/IECEx/CSA certifications allow for safe and reliable end-of-travel detection on large actuated valves (e.g., emergency shutdown valves or blowdown valves) in hazardous areas, ensuring they are fully open or closed before proceeding with process sequences, thereby preventing dangerous operational errors.

The sensor serves as a robust interlock or permissive device on rotating machinery guards and access doors. Its long 16-foot cable and rugged MIL-spec connector facilitate installation on large machine frames, providing a reliable signal to the control system that a guard is securely closed before machinery can be started, enhancing operator safety and meeting stringent machine safety standards.

It is effectively deployed for position sensing on large linear or rotary actuators in power generation and heavy manufacturing. Available in multiple case lengths (90mm to 130mm), it can be configured to fit specific mounting constraints, providing accurate feedback on the position of turbine inlet guide vanes, damper arms, or other mechanical linkages, contributing to precise process control and equipment protection.

Specifications

Competitive Advantage

1.Unmatched Global Certification and Hazardous Area Suitability

The 21504-00-16-10-02 holds a comprehensive suite of international certifications (ATEX, IECEx, CSA, UL, CE), a key competitive edge that validates its safety and performance for global deployment. This single sensor model can be specified for hazardous area applications across North America, Europe, and other regions, simplifying procurement, inventory management, and compliance for multinational operators, unlike switches with limited regional approvals.

2.Superior Reliability with Solid-State, Non-Contact Design

A fundamental advantage over mechanical limit switches is its completely solid-state, non-contact operation. By eliminating moving actuator arms, springs, and contacts prone to wear, fatigue, and failure, this proximity sensor switch offers dramatically extended service life and reduced maintenance requirements. This results in higher system availability and lower total cost of ownership in high-cycle or critical safety applications.

3.Ruggedized Construction with Military-Grade Connectivity

Designed for industrial endurance, the sensor features a robust housing and is equipped with a heavy-duty MIL-DTL-26482 Series II circular connector. This connector provides superior environmental sealing and mechanical security against vibration and accidental disconnection compared to standard industrial connectors. Combined with its wide operating temperature range and long 4.88-meter integral cable, it ensures reliable performance and easy integration in the toughest plant environments.