Description
1. Product Description
The EMERSON PR6426/000-010+CON021 is a high-precision eddy current sensor system designed for non-contact measurement of displacement, vibration, and position in rotating machinery. As part of the EPRO PR6400 series, this system combines the PR6426/000-010 eddy current sensor with the CON021 signal conditioner to deliver reliable monitoring of critical parameters such as shaft vibration, axial displacement, and eccentricity in industrial applications.
The PR6426/000-010 sensor features a 10mm measuring range with a sensitivity of 20mV/μm, enabling precise detection of minute movements in rotating components. Its robust stainless-steel housing and IP67-rated design ensure durability in harsh environments, including high temperatures (-40°C to +125°C) and electromagnetic interference (EMI) zones. The CON021 signal conditioner converts the sensor’s analog output into a standardized 4-20mA signal, facilitating seamless integration with PLCs, DCS systems, or data acquisition platforms.
2. Product Parameters
| Parameter | Details |
|---|---|
| Sensor (PR6426/000-010) | |
| Measuring Range | 10mm (axial displacement) |
| Sensitivity | 20mV/μm (±1% linearity error) |
| Frequency Response | 0 to 10kHz |
| Power Supply | -24V DC (±10%) |
| Cable Length | 5m (extendable up to 50m with compatible extension cables) |
| Signal Conditioner (CON021) | |
| Input Signal | -4V to -20V (eddy current sensor output) |
| Output Signal | 4-20mA (loop-powered) |
| Communication | RS485 (Modbus RTU) |
| Operating Temperature | -25°C to +70°C |
| Mounting | DIN rail or panel-mountable |
PR6426000-010+CON021
3. Advantages and Features
- High Accuracy: The PR6426/000-010 achieves ±1% linearity error, ensuring precise measurements for predictive maintenance in critical machinery.
- Wide Environmental Range: Operates reliably in extreme temperatures (-40°C to +125°C) and high-humidity environments, making it suitable for oil refineries, power plants, and chemical facilities.
- EMI/RFI Immunity: Shielded design and low impedance output minimize signal interference from nearby equipment, ensuring stable operation in noisy industrial settings.
- Easy Integration: The CON021’s 4-20mA output and Modbus RTU interface simplify connectivity with existing control systems, reducing integration complexity.
- Cost-Effective: Multi-sensor compatibility (eddy current, accelerometers) eliminates the need for specialized modules, lowering inventory and maintenance costs.
4. Application Areas and Application Cases
Industry Applications:
- Power Generation: Turbine shaft vibration monitoring and rotor alignment.
- Oil & Gas: Compressor axial displacement detection and bearing wear analysis.
- Manufacturing: High-speed spindle diagnostics in CNC machines.
Case Study:
In a petrochemical plant, the PR6426/000-010+CON021 was deployed to monitor a centrifugal compressor’s shaft vibration. By detecting early signs of imbalance through real-time data transmission, the system reduced unplanned downtime by 40% and extended equipment lifespan by 25%, saving over $500,000 annually in maintenance costs.
In a petrochemical plant, the PR6426/000-010+CON021 was deployed to monitor a centrifugal compressor’s shaft vibration. By detecting early signs of imbalance through real-time data transmission, the system reduced unplanned downtime by 40% and extended equipment lifespan by 25%, saving over $500,000 annually in maintenance costs.
5. Competitor Comparison
The PR6426/000-010+CON021 outperforms comparable systems in:
- Temperature Range: Supports wider operating temperatures (-40°C to +125°C) compared to competitors like Bently Nevada 3300 XL (typically -40°C to +85°C).
- Signal Conditioning: The CON021 integrates Modbus RTU, whereas many alternatives require additional modules for digital communication.
- Cost Efficiency: Offers a 30% lower total cost of ownership due to reduced calibration needs and modular design.
PR6426000-010+CON021
6. Selection Suggestions
- Compatibility Check: Ensure the PR6426/000-010 sensor’s 10mm range matches your machinery’s displacement requirements. Verify the CON021’s 4-20mA output aligns with your PLC/DCS input specifications.
- Environmental Fit: For high-temperature applications (>100°C), consider the PR6426/000-010’s extended temperature rating. Use shielded cables in EMI-prone areas.
- Redundancy: Deploy dual sensors for critical applications to enhance fault tolerance.
- Budget: While the initial cost is higher than basic sensors, the system’s long-term reliability and energy savings justify the investment.
7. Precautions
- Installation: Power down the system before connecting the PR6426/000-010 to avoid damage. Use torque wrenches to secure the sensor at the specified gap distance (typically 1.5mm).
- Calibration: Perform annual calibration using a precision displacement reference (e.g., laser interferometer) to maintain accuracy.
- Maintenance: Clean the sensor tip regularly with alcohol to remove debris. Replace worn cables immediately to prevent signal degradation.
- Software Updates: Keep the CON021 firmware updated to access new features and security patches.
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