Overview
The Emerson Epro PR6423 eddy current sensor and CON021 signal converter form a non-contact measurement system for monitoring shaft displacement and position in rotating machinery. The PR6423 detects changes in the distance between the probe tip and a conductive target, while the CON021 processes the sensor signal for monitoring applications. The supplied configuration specifies a 2 mm (80 mils) measurement range and a sensitivity of 8 V/mm +/- 5%.
Functional Description
The PR6423 measures shaft movement without direct mechanical contact. Its eddy current sensing principle supports the measurement of relative displacement between the probe and a conductive target. Depending on the monitoring setup, the resulting signal can support the assessment of shaft position, eccentricity, and rotational behavior.
The CON021 signal converter processes the probe signal for use by a connected monitoring system. The probe and converter must be treated as a matched measurement configuration, with the specified sensitivity, supply voltage, and output characteristics verified during system selection.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | PR6423/010-040-CN + CON021 |
| Brand | Emerson Epro |
| Product Type | Eddy Current Sensor and Signal Converter |
| Measurement Range | 2 mm (80 mils) |
| Sensitivity | 8 V/mm +/- 5% |
| Frequency Range | 0 to 20,000 Hz |
| CON021 Power Supply Voltage | -23 V to -32 V |
| CON021 Output Voltage Range | -4 V to -20 V |
| CON021 Operating Temperature | -30 deg C to +100 deg C |
| PR6423 Operating Temperature | -35 deg C to +180 deg C |
| CON021 Protection Class | IP20 |
| PR6423 Protection Class | IP66 |
| CON021 Material | LMgSi 0.5 F22 |
| PR6423 Probe Material | Stainless steel with PEEK sensor tip |
| PR6423 Cable Length | Standard options available |
| CON021 Weight | Approximately 120 g |
Installation and Configuration Considerations
The PR6423 probe and CON021 converter perform different functions within the measurement chain. When checking a replacement or spare unit, verify the complete probe model, converter configuration, electrical supply requirements, and signal characteristics against the existing system.
The IP20 rating for the converter and IP66 rating for the probe apply to their respective components. These ratings should not be treated as interchangeable when assessing installation conditions.
Frequently Asked Questions
Q: What is the function of the PR6423 probe and CON021 converter?
A: The PR6423 detects shaft displacement using eddy current sensing, while the CON021 processes the probe signal for monitoring purposes. Together, they provide a measurement chain for non-contact machinery monitoring.
Q: What measurement range does this configuration support?
A: The stated measurement range is 2 mm (80 mils), with a sensitivity of 8 V/mm +/- 5%. Confirm the applicable calibration and measurement conditions before using these values for system setup.
Q: Can the PR6423 probe and CON021 converter be replaced independently?
A: Independent replacement should be based on verified model compatibility and electrical specifications. Check the existing configuration and applicable technical documentation before substituting either component.
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