Overview
The PR6423/01M-010 CON021 is an eddy current displacement measurement assembly developed by EPRO, consisting of an 8 mm proximity probe and a CON021 signal conditioning converter. It monitors shaft dynamics in rotating machinery through non-contact electromagnetic induction. This specific configuration features a 10-meter integrated shielded coaxial cable and delivers an analog voltage output proportional to target surface displacement. Furthermore, the probe withstands operating temperatures from -35 °C to +180 °C, enabling continuous use in harsh mechanical environments with oil contamination and thermal stress.
Measurement Principle and Signal Chain
The system operates on electromagnetic eddy current induction. The probe generates an alternating magnetic field that induces eddy currents in the conductive target surface. Meanwhile, the CON021 converter processes the resulting impedance change and converts it into a linear analog voltage signal. Therefore, the output directly reflects radial or axial displacement without physical contact. This measurement principle eliminates wear and maintains signal stability under continuous vibration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | PR6423/01M-010 CON021 |
| Brand | Emerson (EPRO) |
| System Type | Eddy current displacement measurement assembly |
| Probe Model | PR6423/01M-010 |
| Converter Model | CON021 |
| Measurement Principle | Electromagnetic eddy current induction |
| Probe Diameter | 8 mm |
| Cable Length | 10 m |
| Measurement Range | Approx. 2 – 4 mm |
| Sensitivity | ~8 mV/µm |
| Linearity | ≤ ±1 % full scale |
| Frequency Response | DC up to 10 kHz |
| Converter Bandwidth | 0 – 20 kHz (-3 dB) |
| Output Signal | Analog voltage proportional to displacement |
| Supply Requirement | ±15 V DC (via CON021 module) |
| Operating Temperature | -35 °C to +180 °C |
| Protection Rating | IP67 (probe), IP20 (converter) |
| Material | Stainless steel probe housing, industrial shielded cable |
| Weight | 0.46 kg |
| Estimated Shipping Size | 24 x 20 x 4 cm |
Calibration and Configuration Dependence
The measurement range and sensitivity values listed above are typical and depend on the specific calibration setup applied during installation. For example, the ~8 mV/µm sensitivity varies with target material properties and probe-to-target gap. Furthermore, the CON021 converter requires ±15 V DC power to operate and conditions the sensor signal across a 0 – 20 kHz bandwidth. Therefore, installers should verify the actual calibration certificate for each assembly rather than assuming nominal values apply without adjustment.
Physical Construction
The probe housing uses stainless steel for durability in industrial settings. In addition, the 10-meter shielded coaxial cable integrates directly into the probe body, reducing connection points that could degrade signal quality. The CON021 converter module carries an IP20 rating and is intended for panel or rack mounting in protected enclosures. Meanwhile, the probe itself achieves IP67 protection against dust and temporary immersion, allowing installation directly on machinery surfaces exposed to lubricants or washdown.
Frequently Asked Questions
Q: What supply voltage does the CON021 converter require?
A: The CON021 module requires ±15 V DC power, which it uses to energize the probe and condition the displacement signal.
Q: Can the measurement range be extended beyond 4 mm?
A: The typical measurement range is approximately 2 – 4 mm, but the exact span depends on calibration setup. Consult the calibration certificate for the specific assembly rather than assuming a fixed range.
Q: Is the PR6423/01M-010 probe interchangeable with other CON series converters?
A: The original data confirms pairing with the CON021 converter only. Furthermore, compatibility with other converter models requires verification from Emerson EPRO documentation for the specific probe variant.
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