Epro PR6424/01CS Eddy Current Displacement Sensor

Product Description

The PR6424/01CS from Emerson Epro is a compact eddy-current proximity probe developed for precise, non-contact monitoring of shaft position and vibration in rotating machinery. With a 16 mm probe tip, it is particularly suited for installations where space is limited but measurement accuracy cannot be compromised.

This sensor is commonly deployed in API 670-compliant monitoring systems and is designed to provide stable, repeatable measurements under demanding operating conditions. When integrated with compatible signal converters, it delivers both static displacement and dynamic vibration data for real-time condition monitoring.

Core Features

• Compact 16 mm probe for restricted mounting locations

• Non-contact measurement eliminates mechanical wear

• High sensitivity for accurate shaft motion detection

• Suitable for continuous operation in harsh industrial environments

• Designed for integration with Epro signal converters (e.g., CON021, CON041)

Technical Specifications

General Data

• Model: PR6424/01CS

• Sensor Type: Eddy-current proximity sensor

• Probe Diameter: 16 mm

• Country of Origin: Germany
  

Measurement Characteristics

• Sensitivity: 4 V/mm (tolerance ±1.5%)

• Linear Measuring Range: ±2.0 mm

• Dynamic Measurement Range: 0 to 1000 µm

• Nominal Gap Distance: Approx. 2.7 mm

• Resolution: Up to 10 µm (application dependent)

• Long-Term Stability: Drift <0.3% of full scale

• Target Material: Ferromagnetic steel (e.g., 42CrMo4)

• Minimum Shaft Diameter: ≥80 mm

• Maximum Surface Velocity: Up to 2500 m/s

Electrical Parameters

• Output Signal: Requires external converter (e.g., CON021 / CON041)

• System Output (typical):

• DC voltage proportional to displacement (e.g., –4 to –20 V)

• Superimposed AC component for vibration analysis

• Supply Voltage: Typically 24 V DC (via converter)

• Connector Type: M12 (5-pin) or LEMO, depending on version

• Standard Cable Length: 3 m (custom lengths available)

Environmental Conditions

• Operating Temperature Range: –35°C to +150°C

• Storage Temperature: –40°C to +85°C

• Shock Resistance:

• Standard: 5 g at 60 Hz

• Maximum tolerance: up to 40 g (depending on installation)

• Protection Rating: IP65 to IP67 (configuration dependent)

• Pressure Resistance: Up to 10,000 hPa (145 psi equivalent)

Application Areas

• Steam and gas turbines

• Centrifugal compressors

• Industrial pumps

• High-speed rotating shafts

• Machinery protection and condition monitoring systems

FAQ

Q: Does the sensor work independently?
A: No, the PR6424/01CS requires a compatible Epro converter (such as CON021 or CON041) to generate usable output signals.

Q: What type of material is required for accurate measurement?
A: The sensor is optimized for ferromagnetic materials, typically alloy steels like 42CrMo4.

Q: Is this probe suitable for high-temperature environments?
A: Yes, it can operate continuously up to +150°C, making it suitable for most turbomachinery applications.