Bently Nevada 9200‑06‑05‑10‑00

Product Name

Bently Nevada 9200 Series Velocity Sensor

Product Introduction

Magnetoelectric rotational speed sensor for rotating‑machinery speed monitoring. It requires no external power supply and generates AC voltage output when rotor gear teeth cut through magnetic field. It serves as a core field instrument for speed acquisition of steam turbines, fans and compressors.

Category:
Description

Technical Specifications

Sensing gap: 0.5mm‑1.5mm; Output impedance: approx. 220Ω; Operating temperature: ‑55℃ ~ +121℃; Thread specification: M10×1; Integrated cable; Minimum trigger speed matches gear tooth profile with output amplitude above 50mV.

Functional Features

Passive magnetoelectric induction output; High resistance to industrial electromagnetic interference; No internal wearing components; Supports long‑term continuous on‑line monitoring; Direct AC frequency output proportional to rotational speed.

Application Scenarios

Rotational speed measurement for steam turbines, gas turbines, large centrifugal compressors, industrial fans and pump sets; Signal acquisition for unit overspeed protection systems.

Performance Parameters

Output signal amplitude varies with rotating speed and tooth gap; Frequency range: 0‑10kHz; Ingress protection: IP67; Vibration resistance: 10‑2000Hz, 10g.

Material Composition

Stainless‑steel housing; Permanent‑magnet alloy sensing core; Oil‑resistant and corrosion‑resistant polyimide‑sheathed cable; Epoxy resin potting for sealing.

Structural Characteristics

Cylindrical probe body with external threaded mounting structure; Built‑in permanent magnet and induction coil; Integrated shielded output cable without external junction box.

Working Principle

Alternating gear crests and grooves pass the probe end face and change magnetic‑circuit magnetic flux. The induction coil generates alternating voltage. Signal frequency is proportional to shaft rotating speed. Back‑end system calculates actual rotating speed from frequency value.

Installation Requirements

Maintain probe‑to‑gear‑tooth gap between 0.5‑1.5mm; Ensure gear tooth surfaces are free of burrs and dents; Keep probe radially perpendicular to gear; Route cables away from high‑power power cables; Reliably ground metal housing.

Precautions for Use

Do not strike probe end face with force; Do not expose cable to high‑temperature burning; Avoid excessive mounting torque causing thread deformation; Do not route sensor cables in parallel with inverter power cables; Periodically inspect cable sheath for abrasion.

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