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- PR6423/10R‑010‑CN
- 8 mm Eddy‑Current Sensor
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- 8mm
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Epro PR6423/10R‑010‑CN 8 mm Eddy‑Current Sensor
Product Overview
The PR6423/10R‑010‑CN is an 8 mm non‑contact eddy‑current sensor engineered by Epro. It converts minute changes in the distance between the probe tip and a conductive target—typically a rotating shaft—into a proportional voltage, enabling highly accurate vibration, displacement and shaft‑position measurements for critical machinery.
Its compact stainless‑steel construction, wide operating temperature range and intrinsic safety options make the PR6423 family a preferred choice for turbines, compressors, pumps and gearboxes where early fault detection is essential. All PR6423 sensors are designed to pair with CON 011/021 proximitor modules, forming a complete displacement transducer system.
Key Parameters
| Parameter | Value |
|---|---|
| Model Number | PR6423/10R‑010‑CN |
| Sensor Principle | Eddy‑current displacement |
| Probe Tip Diameter | 8 mm |
| Thread Size | M10 × 1 (Metric) |
| Standard Sensitivity | 8 mV/µm (nominal) |
| Linear Measuring Range | 0 … 2.0 mm (typical) |
| Frequency Response | DC … 10 kHz |
| Cable Type / Length | Rigid mineral‑insulated, 5 m (fixed) |
| Operating Temperature | –35 °C … +180 °C |
| Pressure Rating | ≤ 10 bar (sealed) |
| Protection Class | IP68 (probe), IP67 (connector) |
| Weight | 0.10 kg (probe only) |
| Compatible Proximitor | CON 011 / CON 021 |
| Certification Options | ATEX II 1G Ex ia IIC T4 (on request) |
| Series | PR6423 Eddy‑Current Sensor Series |
Product Description
The PR6423/10R‑010‑CN employs a precision‑ground 8 mm sensing tip and a hermetically sealed, mineral‑insulated cable to ensure long‑term stability in hostile environments that expose equipment to oil splash, steam, process gases and vibration.
Inside the probe a coil generates a high‑frequency electromagnetic field. Eddy currents induced in the shaft attenuate this field in proportion to the gap distance. The resulting impedance change is converted by the proximitor to a calibrated voltage, yielding nanometre‑level resolution without physical contact or wear.
Typical shaft materials—carbon steel, stainless steel or Inconel—maintain calibration constants that are stored in the sensor’s built‑in identification resistor. This plug‑and‑play concept facilitates rapid field replacement and eliminates the need for time‑consuming recalibration.
Applications
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Radial and axial vibration monitoring in steam and gas turbines.
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Thrust‑position measurement in axial‑compressor rotors.
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Bearing‑gap supervision in process pumps, fans and blowers.
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Condition‑based maintenance of gearboxes in petrochemical plants.
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Overspeed and rub detection in high‑speed electric motors.
Advantages
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True non‑contact measurement prevents mechanical wear and guarantees long service life.
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High linearity across a 2 mm dynamic range provides early warning of shaft‑orbit changes.
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Wide temperature capability (–35 °C to +180 °C) covers most industrial process conditions.
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IP68‑rated probe head resists ingress from oil, dust and moisture.
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Interchangeable probes and cables minimise downtime during maintenance.
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Global hazardous‑area approvals support installation in Zone 0/1 explosive atmospheres.
Brand
Epro —has delivered premium vibration‑monitoring hardware for more than 30 years, emphasising German engineering, reliability and accuracy.
Recommended Models – PR6423 & Related Sensors
| Model | Description | Measuring Range | Cable Length | Mount Thread |
|---|---|---|---|---|
| PR6423/00R‑010 | Standard 8 mm probe, unarmoured cable | 0 … 2 mm | 1 m | M10 × 1 |
| PR6423/012‑030 | High‑temp version, sleev‑armoured cable | 0 … 2 mm | 3 m | 3⁄8‑24 UNF |
| PR6423/002‑100 | Long‑range (4 mm) 8 mm probe | 0 … 4 mm | 10 m | M14 × 1.5 |
| PR6422/50R‑010 | 5 mm tip probe for tight‑clearance shafts | 0 … 1 mm | 5 m | M10 × 1 |
| PR6424/006‑030 | 11 mm heavy‑duty probe for large shafts | 0 … 3 mm | 3 m | M16 × 1.5 |
Popular Epro
| Model | Description | System Length | Weight |
|---|---|---|---|
| PR6423/109-020 | Eddy current sensor, standard 8 mm tip, 2.0 m integral cable | 2.0 meters | 0.350 kg |
| PR6423/109-021 | Eddy current sensor, same spec with 2.1 m cable, metric thread M10 | 2.1 meters | 0.355 kg |
| PR6423/109-030 | Extended cable version, 3.0 m length, suitable for remote mounting | 3.0 meters | 0.380 kg |
| PR6423/109-050 | Long-range sensor, 5.0 m cable, armored for harsh environments | 5.0 meters | 0.420 kg |
| PR6423/109-100 | Very long cable, 10.0 m version, with reinforced insulation | 10.0 meters | 0.480 kg |
Frequently Asked Questions (FAQ)
Q1: What gap range does the PR6423/10R‑010‑CN cover?
A1: It offers a calibrated linear range of 0 to 2.0 mm, suitable for most medium‑clearance machinery shafts.
Q2: Which proximitor should be used with this probe?
A2: The probe is optimised for pairing with Epro CON 011 or CON 021 proximity sensor modules.
Q3: Is the sensor interchangeable with other PR6423 probes?
A3: Yes. All PR6423 variants share identical electrical characteristics; any probe can replace another after proper mechanical alignment.
Q4: Can the probe operate in hazardous areas?
A4: An ATEX II 1G Ex ia IIC T4 certified version is available on request for Zone 0/1 installations.
Q5: How is the probe installed?
A5: Thread the probe into a radial or axial port so that the tip faces the conductive target, then lock it in place using the supplied jam nut.
Q6: Does cable length influence calibration?
A6: Each probe is factory‑matched to its cable length; altering cable length without recalibration will affect sensitivity and linearity.
Q7: What shaft materials are compatible?
A7: Carbon steel, stainless steel and Inconel provide the specified calibration constants; non‑ferrous alloys may require custom calibration.
Q8: How often is recalibration required?
A8: With proper installation, recalibration is generally unnecessary; periodic verification during shutdowns suffices.
Q9: What environmental sealing does the probe offer?
A9: The probe head is hermetically welded and rated to IP68, ensuring ingress protection against oil and water immersion.
Q10: What is the maximum extension cable length?
A10: The PR6423 system supports up to 10 m of integral cable; longer runs require a high‑integrity armour and a calibrated CON 021 module.
Authenticity guarantee
All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
Free warehouse
We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
Thoughtful after-sales service
24-hour after-sales service guarantee team, professional and standardized management service system.