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Product Introduction
The Epro PR6423/10R-010 in combination with the CON021 converter is a non-contact eddy current displacement sensor specifically designed for condition monitoring and protection of rotating machinery such as turbines, compressors, motors, and pumps. Manufactured by Epro, now part of Emerson Process Management, this sensor is widely used in industrial environments where high reliability and precise shaft position or vibration measurement are critical.
With an 8mm probe diameter, this sensor system offers a robust, rugged solution capable of operating in harsh environments, including high-temperature zones and areas with electromagnetic interference. The PR6423 series is known for its flexibility, long-term stability, and compatibility with API 670 monitoring systems, making it a standard in the field of machine protection and diagnostics.
Technical Specifications
| Parameter | Specification |
|---|---|
| Sensor Model | PR6423/10R-010 |
| Connector Module | CON021 |
| Sensor Type | Eddy Current (Non-contact displacement sensor) |
| Sensor Head Diameter | 8 mm |
| Measuring Range | 0 to 2 mm (standard), factory calibrated |
| Frequency Range | DC to 10 kHz |
| Sensitivity | 7.87 mV/μm (nominal) |
| Output Signal | Voltage (proportional to displacement) |
| Power Supply | Supplied via CON021 |
| Cable Type | Coaxial, shielded, detachable |
| Cable Length | Standard lengths: 5m, 7m, 9m, 10m (custom on request) |
| Operating Temperature | -35°C to +180°C (sensor), up to +125°C (CON021) |
| Pressure Resistance | Up to 20 bar |
| Mounting Thread | M10 x 1 (other options available) |
| Material (Sensor Housing) | Stainless Steel |
| Protection Class | IP65 / IP68 depending on installation |
| Vibration Limit | 20 g peak |
| Shock Resistance | 100 g |
| Compliance | API 670, CE |
| Weight | 0.22 kg |
Applications
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Steam and Gas Turbines: For monitoring axial and radial shaft displacement and vibrations.
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Centrifugal Compressors: Shaft positioning and dynamic vibration detection.
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Electric Motors and Generators: Online condition monitoring and alarm triggering.
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Pumps: Detection of misalignment, shaft bending, and cavitation.
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Gearboxes and Speed Reducers: Ensuring mechanical integrity and detecting gear wear.
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Industrial Fan Systems: Monitoring imbalance and vibration for predictive maintenance.
Product Advantages
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High Precision Measurement: Accurate monitoring of shaft position and vibration down to micrometer levels.
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API 670 Compliant: Fully compatible with industry standards for machine protection systems.
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Harsh Environment Durability: Withstands high temperature, pressure, and contaminated environments.
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Non-contact Design: Eliminates wear and friction, ensuring long-term reliability and stability.
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Modular System: Sensor and converter are separable, simplifying installation and maintenance.
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Electromagnetic Immunity: Shielded design minimizes noise and ensures accurate readings.
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Wide Compatibility: Can be integrated into Emerson VM600 systems and other common monitoring platforms.
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Field Proven: Thousands of units installed globally in critical industrial applications.
Frequently Asked Questions (FAQ)
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What is the function of the CON021 converter in this system?
The CON021 converter processes the analog signal from the PR6423 sensor, enabling the signal to be interpreted by monitoring systems. -
Can this sensor be used in high-temperature environments?
Yes, the PR6423/10R-010 sensor is rated up to 180°C and is ideal for hot zones in turbines and compressors. -
Is this sensor suitable for hazardous areas?
Depending on configuration, it can be installed in zones with explosion-proof or intrinsically safe requirements, but specific certifications must be verified per model. -
What is the maximum cable length supported between the probe and the converter?
Typically up to 10 meters, with signal quality maintained through coaxial shielding. -
How is this sensor installed on rotating machines?
The sensor is threaded and mounted radially or axially into the machine casing near the shaft surface. -
Does it require calibration after installation?
The sensor is factory-calibrated, but final verification is recommended during commissioning using calibration tools. -
Is this sensor compatible with third-party monitoring systems?
Yes, it outputs a standard voltage signal and is often used with Bently Nevada, Emerson, and other API 670 compliant systems. -
What’s the difference between PR6423/10R and other PR6423 variants?
The ’10R’ variant specifies probe diameter, thread type, and calibration; other variants may differ in mounting or application. -
How often should the sensor be inspected or maintained?
Typically every 2–3 years during scheduled shutdowns; however, due to non-contact design, wear is minimal. -
Can this sensor detect shaft misalignment?
Yes, it measures both static and dynamic shaft displacement, enabling detection of misalignment and imbalance.
Recommended Related Models (Same Series or Similar Function)
| Model | Description | Probe Size | Measuring Range | Thread Type |
|---|---|---|---|---|
| PR6423/002-030+CON021 | Eddy current sensor for 8mm tip, high-temperature use | 8 mm | 0 – 2 mm | M10 × 1 |
| PR6423/005-010+CON021 | Sensor with longer cable and extended mounting | 8 mm | 0 – 2 mm | UNF 3/8″ |
| PR6423/003-010+CON021 | Compact version for space-constrained areas | 8 mm | 0 – 2 mm | M10 × 1 |
| PR6423/002-000+CON021 | Standard version with flexible calibration options | 8 mm | 0 – 2 mm | M10 × 1 |
| PR6423/004-010+CON021 | Optimized for gearbox and slow-speed applications | 8 mm | 0 – 2 mm | M10 × 1 |
| PR6423/001-010-CN+CON021 | Chinese variant with localized support | 8 mm | 0 – 2 mm | M10 × 1 |
Popular Models from the Same Brand (Epro / Emerson)
| Model | Description | Application | Sensor Type |
|---|---|---|---|
| MMS3120/022-100 | Vibration monitoring module for turbine protection | Machinery Protection | Monitoring Module |
| MMS3110/022-000 | Compact rack-mount monitoring module | General Vibration Systems | Monitoring Module |
| PR6424/014-040+CON021 | High-temp sensor with ceramic tip | Gas Turbines, Compressors | Eddy Current Sensor |
| PR6423/002-030+CON021 | Standard 8mm displacement probe | Pumps, Motors | Eddy Current Sensor |
| CON041 | Universal converter module for PR6423 and PR6424 | Sensor Integration | Signal Converter |
| PR6423/00R-030 | OEM variant with custom calibration | Custom Installations | Eddy Current Sensor |
