Excellent PLC
Product Introduction
The Epro PR6423/004-030+CON021 is an 8mm Eddy Current Sensor designed for high-precision measurement of displacement, vibration, and position in industrial applications. The combination of the PR6423/004-030 sensor head with the CON021 signal conditioning unit provides a reliable and accurate system for monitoring critical machinery components.
The sensor operates using the eddy current principle, where variations in the proximity of conductive targets induce changes in electrical impedance. These changes are converted into stable electrical signals by the CON021 unit, enabling precise measurement and real-time feedback. The small 8mm diameter of the sensor head allows installation in tight spaces while maintaining measurement integrity.
This sensor is widely used in applications where non-contact measurement is critical to avoid wear, reduce maintenance, and ensure consistent performance under harsh industrial conditions. Its robust design ensures stable operation in environments with vibration, electromagnetic interference, and temperature fluctuations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Sensor Type | Eddy Current |
| Sensor Head Diameter | 8 mm |
| Weight | 0.22 kg |
| Measurement Range | 0–4 mm standard, customizable |
| Linearity | ±1% full scale |
| Frequency Response | DC to 20 kHz |
| Output Signal | Analog 0–10 V or 4–20 mA (via CON021) |
| Operating Temperature | -40°C to +125°C |
| Supply Voltage | 18–30 V DC |
| Signal Interface | Connector type CON021 |
| Protection | IP65 (sensor head) |
| Material | Stainless steel body with non-magnetic tip |
| Mounting | Threaded or flange mount options |
| Environmental Resistance | Vibration up to 20 g, EMI resistant |
Applications
The PR6423/004-030+CON021 is suitable for:
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Shaft displacement and position monitoring in motors, turbines, and compressors
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Detecting vibration amplitudes for predictive maintenance
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Monitoring misalignment or eccentricity in rotating machinery
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Integration into automation systems requiring precise displacement feedback
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Condition monitoring in aerospace, power generation, and heavy machinery
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High-speed equipment monitoring where non-contact sensing is essential
Its compact design allows installation in areas with limited space, while still delivering high accuracy and reliability.
Advantages
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High Precision – ±1% full scale linearity ensures accurate readings.
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Compact Design – 8mm head diameter allows for installation in confined spaces.
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Non-Contact Operation – Prevents mechanical wear and reduces maintenance needs.
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Robust Construction – Stainless steel body withstands industrial environments.
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Fast Response – Capable of detecting rapid displacement or vibration changes.
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EMI and Vibration Resistant – Reliable measurements in noisy and mechanically active environments.
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Versatile Integration – Compatible with a variety of signal conditioners and monitoring platforms.
FAQ
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What is the maximum measurement frequency of the sensor?
The sensor can accurately measure signals up to 20 kHz, suitable for high-speed machinery. -
What type of output does the sensor provide?
The sensor provides 0–10 V analog or 4–20 mA via the CON021 signal conditioner. -
Can the sensor operate in extreme temperatures?
Yes, it operates reliably between -40°C and +125°C without signal drift. -
Is the sensor resistant to electromagnetic interference?
Yes, the sensor is designed with EMI shielding to maintain stable performance. -
What is the linearity of the sensor?
Linearity is ±1% full scale, ensuring precise measurement throughout the range. -
Can it detect small vibration amplitudes?
Yes, it can detect sub-micron vibration levels, suitable for condition monitoring. -
How is the sensor mounted?
The sensor supports threaded or flange mount for flexible installation. -
What protection does the sensor offer against dust and water?
The sensor head is rated IP65, protecting it from dust and low-pressure water jets. -
Is this sensor suitable for rotating machinery?
Yes, it is designed for rotating shafts, compressors, and turbines. -
What materials are used in the sensor construction?
The sensor body is stainless steel with a non-magnetic tip, ensuring durability and corrosion resistance.
Related or Series Models
| Model | Sensor Head Diameter | Measurement Range | Output | Weight |
|---|---|---|---|---|
| PR6423/004-040 | 8 mm | 0–4 mm | 0–10 V / 4–20 mA | 0.23 kg |
| PR6423/008-030 | 8 mm | 0–8 mm | 0–10 V / 4–20 mA | 0.24 kg |
| PR6423/006-030 | 8 mm | 0–6 mm | 0–10 V / 4–20 mA | 0.22 kg |
| PR6423/010-030 | 8 mm | 0–10 mm | 0–10 V / 4–20 mA | 0.25 kg |
| PR6423/004-020 | 8 mm | 0–4 mm | Differential output | 0.22 kg |
| PR6423/004-050 | 8 mm | 0–4 mm | 0–5 V / 0–20 mA | 0.23 kg |
Popular Epro Models
| Model | Sensor Head Diameter | Measurement Range | Output | Weight |
|---|---|---|---|---|
| PR6424/014-040 | 14 mm | 0–4 mm | 0–10 V | 0.8 kg |
| PR6424/022-100 | 22 mm | 0–10 mm | 0–10 V / 4–20 mA | 1.2 kg |
| PR6426/010-100 | 32 mm | 0–10 mm | 0–10 V | 1.3 kg |
| PR6426/020-120 | 32 mm | 0–15 mm | 0–10 V / 4–20 mA | 1.5 kg |
| PR6430/010-110 | 30 mm | 0–10 mm | 0–10 V | 1.4 kg |
| PR6430/015-120 | 30 mm | 0–15 mm | 0–10 V / 4–20 mA | 1.6 kg |
