Emerson PR6423/000-040 Eddy Current Sensor for Industrial Applications

Product Description

Product Overview

The EPRO PR6423/000-040 is a high-precision eddy current displacement sensor from Emerson’s AMS / EPRO PR6423 series.
It provides non-contact measurement of shaft vibration, position, and eccentricity in industrial turbomachinery such as turbines, compressors, pumps, and gearboxes.

This model features an 8 mm probe tip with a 40 m integrated cable, making it suitable for installations where the monitoring system is located far from the measurement point.
The sensor uses eddy current technology, delivering wear-free measurement, high accuracy, and long-term stability for critical condition monitoring.

Moreover, the PR6423 series integrates seamlessly with Emerson monitoring platforms such as AMS 6500 and VM600, while being compliant with API 670 standards for safety and reliability.

Technical Specifications

Product Type: Eddy Current Displacement Sensor
Model Number: PR6423/000-040
Manufacturer: Emerson / EPRO
Probe Tip Diameter: 8 mm
Cable Length: 40 m (integrated)
Linear Measurement Range: 2 mm (80 mils)
Initial Air Gap: 0.5 mm (20 mils)
Incremental Scale Factor (ISF): 8 V/mm ±5% @ 0–45 °C
Deviation from Best Fit Line (DSL): ±0.025 mm (±1 mil)
Minimum Shaft Diameter: 25 mm (0.79 in)
Target Material: Ferromagnetic steel (42CrMo4 / AISI 4140 standard)
Frequency Response: Up to 10 kHz
Output Signal: Analog voltage (compatible with monitoring systems)
Operating Temperature Range: –40 °C to +125 °C standard, up to +160 °C T3 version
Protection Class: IP66 (IEC 60529)
Housing Material: Stainless steel
Weight: 0.3–0.5 kg 
Compliance: API 670

Frequently Asked Questions (FAQ)

Q1: What is the measurement capability of this sensor?
A1: It measures shaft vibration, radial and axial displacement, and eccentricity without any physical contact.

Q2: How does the long 40 m cable benefit installation?
A2: It allows the sensor to connect to monitoring systems located at significant distances from the measurement point.

Q3: Can this sensor be used in harsh industrial environments?
A3: Yes, it features an IP66-rated stainless steel housing and operates from –40 °C to +125 °C.

Q4: Is it compatible with Emerson monitoring platforms?
A4: Yes, it integrates seamlessly with AMS 6500 and VM600 systems.

Q5: What standards does this sensor comply with?
A5: It is API 670 compliant, suitable for critical turbomachinery monitoring applications.