EPRO PR6424/013-130 + CON021: Advanced Displacement Sensing
System Architecture and Measurement Chain
The EPRO PR6424/013-130, when paired with the CON021 signal converter, forms a complete eddy current measurement chain. This system is engineered to capture minute changes in the gap between the sensor tip and the rotating shaft. The "013-130" designation refers to a specific probe configuration with an integrated cable length and housing thread designed for heavy-duty industrial mounting.
The Role of the CON021 Signal Converter
The CON021 is the electronic backbone of this measurement system. It supplies the high-frequency carrier signal to the PR6424 probe and demodulates the return signal to provide a standardized voltage output. This conversion is linear, meaning the output voltage directly represents the physical distance (gap) in micrometers. This accuracy is vital for detecting shaft eccentricity and axial position shifts in steam turbines.
Environmental Protection and Durability
Industrial monitoring often occurs in environments filled with oil mist, high pressure, and extreme temperatures. The PR6424/013-130 features a hermetically sealed tip and a robust stainless steel body. The cable is protected by a flexible stainless steel armor, ensuring that mechanical stress and chemical exposure do not lead to signal degradation or premature sensor failure.
Calibration and Linearity
Each PR6424/013-130 measurement chain is calibrated for specific target materials, typically 42CrMo4 steel. This ensures a sensitivity of 4 V/mm or 8 V/mm depending on the configuration. The linearity of the system allows for precise tracking across the entire measurement range, which is essential for Machine Protection Systems (MPS) to execute safety trips before damage occurs.
Application in Power Generation
This measurement chain is a standard choice for power plant operators globally. By providing continuous data on shaft vibration and axial displacement, it enables predictive maintenance strategies. This reduces unplanned downtime and extends the operational life of critical assets like multi-stage compressors and large-scale generators.
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