Overview

The CON021 is part of Emerson’s EPRO eddy current monitoring system, designed for non‑contact measurement of shaft vibration and displacement. It works in combination with sensors such as the PR6422, PR6423, PR6424, PR6425, PR6426, and PR6453, providing highly accurate monitoring of radial and axial shaft movement.

Moreover, the CON021 is widely used in steam, gas, and hydro turbines, as well as large compressors and pumps, where precise shaft position monitoring is critical for reliability and safety. Its fast response time (<15 μs) and wide frequency range (up to 20 kHz) make it suitable for dynamic machinery diagnostics.

Overview

The PR6423/01H-O30 is a high-precision eddy current proximity sensor designed for non-contact shaft monitoring in critical rotating machinery. It measures dynamic displacement, position, eccentricity, and shaft speed with exceptional linearity and stability. Engineered for use in steam, gas, and hydro turbines, as well as compressors and pumps, it ensures reliable protection and performance in demanding environments.

This probe is typically paired with the CON021 signal converter, forming a complete eddy current measurement chain used in predictive maintenance and machinery protection systems. Together, they provide fast response times, robust diagnostics, and accurate shaft behavior insights—helping reduce unplanned downtime and improve asset reliability.

Technical Data

Typical Applications

• Turbomachinery Monitoring: Steam, gas, and hydro turbines.

• Compressor & Pump Diagnostics: Shaft displacement, eccentricity, and mechanical condition.

• Predictive Maintenance: Detects early symptoms of misalignment, imbalance, and bearing wear.

• Safety Systems: Maintains shaft position control to prevent catastrophic equipment failures.

Example:
In a power generation plant, the PR6423/01H-O30 continuously monitors turbine shaft vibration and displacement, allowing maintenance teams to identify early signs of bearing degradation and avoid major outages.

FAQ

Q1: What is the primary function of the PR6423/01H-O30?
It measures shaft vibration, displacement, and eccentricity using eddy current technology.

Q2: Which converter is required?
It operates with the CON021 eddy current signal converter.

Q3: What industries use this sensor?
Oil & gas, chemical, petrochemical, and power generation.

Q4: Is it suitable for harsh environments?
Yes, it is IP66-rated and designed for rugged industrial applications.

Q5: What is the probe diameter?
This variant uses an 8 mm diameter probe.