EPRO PR6423/003-030

Product Overview

PR6423/003-030 is a high-performance, non-contact eddy current displacement sensor produced by the German company Epro, specifically designed for the condition monitoring and protection of critical rotating machinery.

This model belongs to the renowned PR6423 8mm series of Epro. The core function is to utilize the eddy current effect to precisely and in real time measure the dynamic displacement, static position, eccentricity and rotational speed of the shaft without any physical contact with the measured shaft. This non-contact measurement method eliminates mechanical wear and ensures long-term reliability and high precision in extreme industrial environments, making it an indispensable key component in modern predictive maintenance and machine protection systems.

Product Specifications and Parameters

PR6423       8mm Eddy Current Sensor

00              Standard installation type

3                Armored Cable, install in reverse

-030           3.0mm linear measurement range

Detailed technical parameters

Probe diameter                                   8mm

Linear measurement range                  3.0mm

Initial Air Gap                                     0.5mm

Incremental Scale Factor                      8 V/mm

Deviation from best fit straight line       ± 0.025mm

Target material                                   42CrMo4

Minimum shaft diameter                      25 mm

Operating temperature range

Sensor and 1-meter integrated cable    -35°C to +180°C

Cables and connectors                        -35°C to +150°C

Protection grade                                 IP66

Material

Probe tip                  PEEK

Shell                        Stainless steel

Cable                       PTFE

Connector                Brass, nickel-plated

Weight                     Approximately 100 grams

Certifications            CE, ATEX, IECEx, CSA

Comparison of Advantages and Disadvantages

Advantages

Unparalleled reliability. Under correct installation and usage conditions, PR6423/003-030 can work stably for decades and is a prime example of the "Fit and Forget" concept.

High precision and high resolution. The detection of micron-level axial movement provides high-quality data for early fault diagnosis.

Strong anti-interference ability. Eddy current technology itself is not sensitive to non-conductive media such as oil, water and dust, and is highly suitable for harsh industrial sites.

Disadvantage

The initial procurement cost is much higher than that of contact sensors or other types of non-contact sensors.

The installation requirements are extremely strict. Installation clearance, medium temperature, and the surrounding metal environment will significantly affect the measurement accuracy. Installation and calibration must be carried out by professionally trained personnel.

Only applicable to conductive materials. PR6423/003-030 cannot be used to measure non-metallic shafts.

A matching converter is required. PR6423 must be used in conjunction with a dedicated signal converter, which increases the system complexity and cost.