Overview
The PR6423/010-000-CN + CON021 from Emerson Epro is a non-contact eddy current measurement system developed for continuous monitoring of shaft displacement and vibration in rotating machinery. It combines an 8 mm tip proximity probe with a dedicated driver module to deliver stable displacement data under demanding industrial conditions. This configuration is widely implemented in machinery protection systems where precise position feedback is required for safe and efficient operation.
Probe Design and Measurement Performance
The PR6423/010-000-CN probe operates on the eddy current principle, enabling non-contact measurement of static and dynamic displacement. The 8 mm tip size provides a measuring range of ±1.0 mm to ±2.0 mm depending on calibration, with a system sensitivity of 8 mV/µm. Frequency response extends up to 10 kHz, supporting both low-speed position monitoring and high-frequency vibration analysis. Linearity is maintained within ≤ ±1% of full scale, with resolution better than 1 µm.
| Parameter | Specification |
|---|---|
| Model | PR6423/010-000-CN + CON021 |
| Brand | Emerson Epro |
| Measurement Principle | Eddy current, non-contact |
| Tip Size | 8 mm |
| Measuring Range | ±1.0 mm to ±2.0 mm (dependent on calibration) |
| Sensitivity | 8 mV/µm (system calibrated) |
| Frequency Response | Up to 10 kHz |
| Linearity | ≤ ±1% of full scale |
| Resolution | Better than 1 µm |
| Operating Temperature | −35 °C to +180 °C |
| Protection Rating | ≥ IP65 |
| Housing Material | Stainless steel |
| Cable Type | Integrated coaxial cable (short or configurable length) |
| Connector | Epro standard coaxial connector |
| Installation | Threaded mounting or bracket fixing |
Signal Conditioning and Diagnostics
The CON021 driver module conditions the probe signal and converts it into an analog voltage output proportional to displacement, typically 0–20 V. It operates from a 24 V DC power supply and supports PR6422, PR6423, PR6424, and PR6426 series probes. Built-in diagnostic functions include probe condition monitoring, cable fault detection, and gap voltage supervision. Accuracy is ≤ ±1% full scale, with bandwidth matching the probe at up to 10 kHz. The module mounts on DIN rail or in a system rack.
| Parameter | Specification |
|---|---|
| Device Type | Signal conditioner for proximity probes |
| Supported Probes | PR6422, PR6423, PR6424, PR6426 series |
| Power Requirement | 24 V DC |
| Excitation | High-frequency oscillator |
| Output Signal | Analog voltage proportional to displacement (typically 0–20 V) |
| Sensitivity | 8 mV/µm (with matched probe) |
| Bandwidth | Up to 10 kHz |
| Accuracy | ≤ ±1% FS |
| Diagnostic Functions | Probe condition monitoring, cable fault detection, gap voltage supervision |
| Operating Temperature | –20 °C to +70 °C |
| Mounting Options | DIN rail or system rack |
Frequently Asked Questions
Q: What probe series are compatible with the CON021 driver module?
A: The CON021 supports PR6422, PR6423, PR6424, and PR6426 series eddy current proximity probes from Emerson Epro.
Q: What diagnostic features does the CON021 provide for system maintenance?
A: The module monitors probe condition, detects cable faults, and supervises gap voltage to assist maintenance personnel in identifying sensor or installation issues before they affect machinery protection.
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