Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Emerson EPRO |
| Sensor Model | PR6426/010-110 |
| Converter Model | CON021/916-240 |
| Product Type | Eddy Current Proximity Measurement System |
| Sensor Diameter | 32 mm probe system |
| Measurement Principle | Eddy current non-contact displacement measurement |
| Target Measurement | Shaft displacement, axial position, radial vibration, eccentricity |
| Measuring Range | 24 mm extended range configuration |
| Output Signal | Analog proportional output through signal converter |
| Supply Voltage | 24 VDC |
| Frequency Response | Up to 10 kHz (system dependent) |
| Probe Temperature Range | Approx. -35°C to +180°C |
| Converter Type | Panel mount eddy current signal converter |
| Compatible Sensors | PR6426 series probes |
| Linearity Error | Up to approximately ≤3.5% for CON021/916-240 configuration |
| Application Platform | EPRO MMS6000 / machinery protection systems |
| Installation | Turbine, compressor, pump and rotating equipment monitoring |
Product Introduction
Emerson EPRO PR6426/010-110 + CON021/916-240 Overview
The Emerson EPRO PR6426/010-110 + CON021/916-240 is an eddy current proximity measurement system designed for rotating machinery condition monitoring. The probe measures shaft movement without physical contact, while the CON021 converter processes the sensor signal for integration into machinery protection and monitoring systems.
The Emerson EPRO PR6426/010-110 system is commonly found on large turbines, compressors, and critical rotating equipment where accurate shaft position and vibration data are required. Replacement requires checking probe gap settings, converter range selection, cable length, and MMS monitoring configuration before commissioning.
PR6426
Application Scenarios & Field Pitfalls (The Engineer’s Perspective)
Engineering Pain Point
A rotating machine starts showing unstable vibration values during operation. Maintenance teams often suspect bearings or alignment first. The actual issue may be a deteriorated proximity probe, incorrect probe gap, damaged extension cable, or an improperly matched signal converter.
The EPRO PR6426/010-110 + CON021/916-240 assembly is part of the measurement chain. Any mismatch affects the accuracy of the protection system.
Typical Applications
- Power Generation Plants – Turbine shaft vibration, axial displacement, and rotor position monitoring.
- Oil & Gas Facilities – Compressor vibration protection and machinery health monitoring.
- Petrochemical Plants – Large rotating equipment protection including pumps and expanders.
- Industrial Manufacturing Plants – High-speed motor and gearbox condition monitoring.
Technical Pitfalls to Avoid
- Probe Gap Adjustment
Eddy current probes depend on correct installation gap. Incorrect gap voltage can create false vibration readings or unstable protection signals.
- Converter Range Matching
The sensor must be paired with the correct range version. The /916-240 configuration is designed for a specific extended measuring range and should not be substituted without verification.
- Cable and Shielding Inspection
Extension cables, connectors, and shielding are critical parts of the measurement circuit. A damaged cable can look like a failed sensor.
Field note: Before replacing a system, record the existing gap voltage, probe position, converter settings, alarm thresholds, and MMS channel configuration. Mechanical measurements alone are not enough for proper setup.
Related Products
- Emerson EPRO /010-100
Similar 32 mm eddy current probe variant. Used for shaft displacement monitoring with different probe configuration details. - Emerson EPRO /010-110 + /916-120
Same sensor family with a shorter measuring range converter. Suitable when the required displacement range is lower. - Emerson EPRO /010-110 + /916-200
Related converter configuration providing a 20 mm extended measuring range. Used for applications requiring different shaft movement measurement limits. - Emerson EPRO /916-240
Eddy current signal converter matched with sensors for extended-range measurement applications. - Emerson EPRO PR6423 Series Probe
Smaller probe family used for different shaft displacement measurement ranges and machinery monitoring applications. - Emerson EPRO MMS6000 System
Machinery monitoring platform designed for vibration, displacement, and rotating equipment protection. - Emerson AMS 6500 Machinery Health Monitor
Rack-based machinery protection platform used for critical rotating equipment monitoring. - Emerson EPRO CON011 Converter
Alternative signal converter family for and other EPRO eddy current probes. - Emerson EPRO CON041 Converter
DIN rail mounting converter option for EPRO eddy current measurement systems. - Emerson EPRO Series Eddy Current Sensors
Complete sensor family used for non-contact shaft vibration and displacement measurement on rotating machinery.
