EPRO PR6423/256-110 Eddy Current Transducer

Overview

The EPRO PR6423/256-110 is an advanced eddy current transducer, designed to measure displacement and vibration accurately in industrial settings. Due to its compact size and rugged construction, this sensor performs reliably even in harsh environments. It uses a contactless measurement principle, which ensures durability and accuracy, making it ideal for a wide range of turbomachinery applications.

Applications

This sensor is widely used for monitoring key mechanical parameters in turbomachines and similar equipment. With the EPRO PR6423/256-110, you can measure:

Clearances between rotating and stator components
Vibration of rotating and non-rotating parts
Dynamic motion and eccentricity of shafts
Deformation or bending of rotating and stator components
Axial and radial shaft movements
Thrust bearing positions and wear
Oil film thickness
Differential expansions
Housing expansions and valve positions

The EPRO PR6423/256-110 offers an efficient way to monitor and ensure optimal performance, helping prevent unexpected downtimes and costly maintenance.

How It Works

The EPRO PR6423/256-110 operates on the principle of eddy current technology. In simple terms, the sensor and the signal converter together form an oscillator circuit. When the sensor approaches a metallic object, the oscillation amplitude decreases in response to the proximity of the object. The amount of damping is proportional to the distance between the sensor and the object.

Furthermore, the system comes fully calibrated. Thus, no additional calibration is needed on-site. Only the gap between the sensor and the object needs to be adjusted to obtain the specified signal at the converter output.

Key Features

Non-contact measurement: Prevents wear and tear, ensuring long-lasting performance.
Compact design: Makes it easy to install in tight spaces.
Rugged construction: Ideal for demanding industrial environments.
Pre-calibrated system: Reduces setup time and improves ease of use.
High accuracy: Provides reliable and precise measurements.

Technical Specifications

Parameter	Specification
Model Number	EPRO PR6423/256-110
Measurement Range	0 to 5 mm (0 to 0.20 in)
Sensitivity	7.87 V/mm (200 mV/mil) ± 5%
Initial Air Gap	0.5 mm (20 mils)
Linearity Error	± 0.025 mm (± 1 mil)
Output Voltage	-2 VDC to -18 VDC
Frequency Response	0 to 20 kHz
Operating Temperature	-35°C to +180°C (-31°F to +356°F)
Target Material	Ferromagnetic Steel (42CrMo4 / AISI/SAE 4140)
Protection Class	IP66 (IEC 60529)
Weight (Sensor + Cable)	Approx. 200 grams (7.05 oz)
Cable Length	3 meters (9.84 feet)
Material	Sensor Tip: PEEK (Polyether Ether Ketone)
	Sensor Case: Stainless Steel
	Cable: PTFE (Polytetrafluoroethylene)
	Connector: Brass, nickel-plated

Conclusion

In conclusion, the EPRO PR6423/256-110 stands out as a high-precision, non-contact measurement tool for displacement and vibration monitoring. With its reliable performance, rugged design, and ease of use, this sensor is ideal for a variety of industrial applications. Whether you’re measuring clearances in turbines or monitoring the vibration of rotating machinery, the EPRO PR6423/256-110 ensures accurate and real-time data, contributing to optimal machine health and reduced maintenance costs.