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EMERSON PR6424/011-140 Eddy Current Proximity Probe
Product Overview ：EMERSON PR6424/011-140
The EMERSON PR6424/011-140 is a high-precision Eddy Current Proximity Probe designed for non-contact measurement of displacement, vibration, and position in industrial machinery. As part of Emerson’s PR6424 Series, this probe is engineered to deliver reliable data in critical applications such as turbines, compressors, and pumps, where precise monitoring of rotating components is essential for preventing catastrophic failures. The PR6424/011-140 leverages electromagnetic induction principles to detect minute movements of metal targets (e.g., shafts, gears) with nanometer-level resolution, making it a cornerstone of predictive maintenance strategies in industries like oil & gas, power generation, and manufacturing.
Featuring a robust stainless-steel construction, the EMERSON PR6424/011-140 is built to withstand harsh environmental conditions, including high temperatures (up to 200°C), pressure, and corrosive atmospheres. Its 5 mm nominal probe diameter and 140 mm active length provide optimal sensitivity for measuring radial vibration, axial displacement, and shaft eccentricity in machinery with rotating speeds up to 100,000 RPM. The probe’s compatibility with Emerson’s CON021 and CON041 converters ensures seamless integration into existing condition monitoring systems, enabling real-time data transmission to PLCs, DCS, or SCADA platforms for analysis and control.
In industrial automation ecosystems, the PR6424/011-140 serves as a critical interface between mechanical systems and electronic monitoring devices. Its low noise output (≤10 mV peak-to-peak) and linear measurement range (0–2 mm) ensure accurate and repeatable data, even in high-vibration environments. Whether deployed in standalone setups or multi-probe arrays, this sensor enhances system reliability by enabling early detection of wear, misalignment, or imbalance, thereby reducing unplanned downtime and extending equipment lifespan.
Technical Specifications ：EMERSON PR6424/011-140
| Parameter Name | Parameter Value |
|---|---|
| Product Model | PR6424/011-140 |
| Manufacturer | Emerson |
| Product Type | Eddy Current Proximity Probe |
| Probe Diameter | 5 mm |
| Active Length | 140 mm |
| Linear Range | 0–2 mm (gap voltage: -2 to -20 V DC) |
| Sensitivity | 7.87 V/mm (200 mV/mil) |
| Temperature Range | -40°C to +200°C (probe body) |
| Cable Length | 5 m (shielded, low-capacitance) |
| Material | Stainless steel (probe tip and body) |
| Vibration Resistance | 20 g (10–2000 Hz) |
| Mounting | Threaded (M8 x 1 mm pitch) |
| Compliance | ISO 10816-3, API 670 |
EMERSON PR6424 011-140
Key Features and Advantages ：EMERSON PR6424/011-140
High-Precision Measurement: The PR6424/011-140 offers industry-leading resolution (0.1 μm) and linearity (±1% of full scale), ensuring accurate detection of subtle mechanical deviations. Its eddy current technology eliminates contact wear, making it ideal for long-term monitoring of high-value assets.
Rugged Environmental Performance: The probe’s stainless-steel construction and temperature-resistant design (-40°C to +200°C) enable reliable operation in extreme conditions, such as those found in turbine casings or offshore platforms. The shielded cable minimizes electromagnetic interference (EMI), ensuring stable signal transmission in noisy environments.
Easy Integration: Designed for plug-and-play compatibility with Emerson’s condition monitoring systems, the PR6424/011-140 reduces installation complexity. Its standardized M8 threading allows quick mounting on machinery frames, while the 5 m cable provides flexibility for routing in tight spaces.
Wide Application Range: With a linear range of 0–2 mm and compatibility with various target materials (ferrous and non-ferrous metals), the probe is suitable for monitoring a diverse range of equipment, from small motors to large industrial turbines. Its ability to measure both static displacement and dynamic vibration enhances its utility in predictive maintenance programs.
Low Maintenance Design: The non-contact measurement principle eliminates the need for periodic calibration or mechanical adjustments, reducing maintenance costs. The probe’s durable construction also minimizes replacement frequency, even in harsh operational environments.
EMERSON PR6424 011-140
Application Areas ：EMERSON PR6424/011-140
The EMERSON PR6424/011-140 is widely deployed in industries where machinery health monitoring is critical:
- Oil & Gas: Monitors shaft vibration and axial displacement in compressors, pumps, and gas turbines in refineries, pipelines, and offshore rigs, preventing failures due to bearing wear or misalignment.
- Power Generation: Ensures safe operation of steam turbines and generators in thermal and nuclear power plants by detecting early signs of rotor instability or casing deformation.
- Manufacturing: Used in high-speed rotating machinery (e.g., spindles, fans) in automotive, aerospace, and pharmaceutical production lines to optimize performance and reduce downtime.
- Marine Engineering: Measures propeller shaft alignment and vibration in large vessels, ensuring smooth operation and compliance with environmental regulations.
Specific applications include:
- Vibration Analysis: Detects imbalance or misalignment in rotating shafts, enabling timely maintenance to avoid catastrophic failures.
- Axial Displacement Monitoring: Tracks thrust bearing wear in turbines, preventing contact between rotating and stationary components.
- Eccentricity Measurement: Monitors shaft runout in pumps and motors, ensuring optimal clearances and reducing energy loss.
By providing real-time, high-precision data, the PR6424/011-140 empowers maintenance teams to transition from reactive to proactive strategies, minimizing operational disruptions and maximizing asset efficiency.
Related Products
- PR6423/002-030: A 3 mm diameter probe with a shorter active length (30 mm), suitable for space-constrained applications requiring high-resolution measurements.
- PR6426/010-031: A high-temperature variant (up to 250°C) with a 10 mm diameter, designed for extreme environments like boiler feed pumps.
- CON021 Converter: Matches the PR6424/011-140 to provide conditioned analog outputs (4–20 mA or 0–10 V) for integration with control systems.
- CON041 Dual Channel Converter: Supports two probes simultaneously, enabling redundant monitoring or dual-axis vibration analysis.
- EXT6000 Extended Cable: Extends the probe’s reach up to 50 m without signal degradation, ideal for distributed machinery setups.
- TDM4010 Machinery Health Analyzer: Emerson’s data acquisition system that pairs with the PR6424/011-140 for advanced vibration trend analysis.
- PR9268/603-020 Accelerometer: Complements proximity probes by measuring structural vibration, providing a comprehensive machinery health profile.
- VibroSight Software: A diagnostic tool for real-time visualization and analysis of data from the PR6424/011-140 and other sensors.
EMERSON PR6424 011-140
Installation and Maintenance ：EMERSON PR6424/011-140
Installation Preparation:
Before installing the EMERSON PR6424/011-140, ensure the measurement surface is clean, smooth, and free of non-conductive coatings. Use a gap gauge to set the initial probe-to-target distance within the linear range (0.5–1.5 mm). Secure the probe with an M8 locknut to prevent loosening due to vibration. Connect the shielded cable to the converter (e.g., CON021) using strain relief to avoid mechanical stress on the connectors. Ground the system properly to minimize EMI interference.
Before installing the EMERSON PR6424/011-140, ensure the measurement surface is clean, smooth, and free of non-conductive coatings. Use a gap gauge to set the initial probe-to-target distance within the linear range (0.5–1.5 mm). Secure the probe with an M8 locknut to prevent loosening due to vibration. Connect the shielded cable to the converter (e.g., CON021) using strain relief to avoid mechanical stress on the connectors. Ground the system properly to minimize EMI interference.
Maintenance Recommendations:
- Routine Inspections: Visually inspect the probe and cable quarterly for signs of physical damage, corrosion, or loose connections. Use a multimeter to verify the probe’s output voltage falls within the expected range (-2 to -20 V DC).
- System Calibration: Perform annual calibration using a precision gap fixture to ensure accuracy. Compare the probe’s output against a calibrated reference standard and adjust as necessary.
- Environmental Checks: Monitor the probe’s operating temperature and vibration levels to ensure they remain within specified limits. Clean the probe tip with a non-abrasive solvent if contamination (e.g., oil, dust) is detected.
- Spare Parts Management: Store spare PR6424/011-140 probes in a dry, temperature-controlled environment to prevent cable degradation. Test spares periodically to confirm functionality before deployment.
EMERSON PR6424 011-140
Product Warranty ：EMERSON PR6424/011-140
Our company provides a 12-month quality warranty for the EMERSON PR6424/011-140, covering manufacturing defects and material failures under normal use. In the event of performance issues, we offer prompt replacement services to minimize downtime. For legacy or hard-to-find models, our global supply chain network specializes in sourcing discontinued industrial sensors, ensuring reliable access to critical spares. Our technical support team is available 24/7 to assist with installation, calibration, and troubleshooting, delivering customized solutions to keep your monitoring systems operating at peak performance.
For sales inquiries, contact us via WhatsApp at +86 18859254943 or email at sales@ygplc.com.
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