Epro PR9670/113-100 Eddy Current Proximity Sensor

Product Description

The PR9670/113-100 from Emerson EPRO is a precision eddy-current proximity probe developed for continuous, non-contact measurement of shaft dynamics in rotating equipment. It is engineered for accurate detection of radial vibration, axial displacement, and shaft position in demanding industrial environments.

This sensor operates with external signal converters such as CON021 or CON041, forming a complete measurement chain that outputs a stable analog signal proportional to the target distance. Its robust stainless-steel construction and high ingress protection make it suitable for long-term deployment in harsh operating conditions.

Measurement Functionality

The PR9670/113-100 utilizes eddy-current principles to monitor conductive targets without mechanical contact. It is typically installed near rotating shafts or machine components to provide real-time data for protection and condition monitoring systems.

Typical measurement functions include:

• Radial shaft vibration detection

• Axial position (thrust) monitoring

• Shaft displacement and eccentricity analysis

• Speed-related positional variations in rotating assemblies

Technical Specifications

Performance Characteristics

• High measurement accuracy with stable linear response

• Non-contact sensing eliminates mechanical wear and drift

• Resistant to oil, dust, humidity, and industrial contaminants

• Suitable for continuous monitoring in high-temperature environments

Application Areas

The PR9670/113-100 is widely applied in machinery protection systems for critical rotating assets:

• Steam and gas turbines

• Industrial compressors

• Pumps and auxiliary systems

• Electrical generators

• High-speed rotating machinery

Comparison with Related Models

• PR6423 series: Typically smaller probe size (8 mm) with different mounting and range characteristics

• PR9670 series: Larger probe diameter (11 mm) offering enhanced robustness for specific installations

• Compatibility across EPRO converters ensures flexible integration into existing monitoring systems

FAQ

Q: Does this sensor work independently?
A: No, it requires a compatible signal conditioner such as CON021 or CON041 to produce usable output signals.

Q: What materials can be measured?
A: The sensor is optimized for ferromagnetic materials such as steel shafts.

Q: Is it suitable for high-temperature applications?
A: Yes, it supports operation up to +180°C, making it appropriate for turbine and compressor environments.

Q: What protection level does the sensor provide?
A: With IP67 protection, it is resistant to dust ingress and temporary immersion in water.