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Product Introduction
The Epro CON020/T4 + PR6424/01 16 mm Eddy Current Sensor is a factory-matched, non-contact displacement and vibration measurement system designed for critical rotating machinery. The package combines a PR6424/01 proximity probe (16 mm sensing tip) with the CON020/T4 signal converter, providing a conditioned 4–20 mA (or optional 0–20 V DC) output proportional to shaft position or dynamic vibration.
Developed for turbines, compressors, and other high-value assets, the system delivers stable linear performance across a wide temperature span, resists electromagnetic interference, and thrives in oily, contaminated environments typical of power-generation and petrochemical plants.
Product Specifications
| Parameter | Details |
|---|---|
| Probe Model | PR6424/01 |
| Converter Model | CON020/T4 |
| Sensing Principle | Eddy current (non-contact) |
| Probe Tip Diameter | 16 mm |
| Sensitivity (System) | 4 mA /mm (4–20 mA span) -or- 7.87 mV / µm (voltage mode) |
| Frequency Response | 0 Hz – 10 kHz (±3 dB) |
| Linearity | ±1 % of full scale |
| Output Signal | 4–20 mA (default), switch-selectable 0–20 V DC optional |
| Power Supply (Converter) | 18–32 V DC, < 30 mA |
| Operating Temperature | –35 °C … +180 °C (probe) ; –25 °C … +85 °C (converter) |
| Thread Size | M14 × 1.5 (other threads on request) |
| Housing Material | AISI 304 stainless steel |
| Ingress Protection | IP65 (standard), IP67 with optional sealed connector |
| EMC / Safety | EN 61000-6-2/4, CE, optional ATEX II 2 G Ex ia IIC T4 |
| Weight | 0.2 kg |
| Mounting Orientation | Radial or axial |
| System Configuration | Factory-matched probe + converter pair |
Product Applications
-
Gas & Steam Turbines
Continuous monitoring of shaft vibration, eccentricity, and thermal growth. -
Centrifugal & Reciprocating Compressors
Detects early-stage bearing wear, rotor rub, and imbalance. -
Industrial Pumps & Fans
Protects against cavitation-induced shaft movement and dynamic loading. -
Generator Sets
Provides displacement feedback for load-dependent alignment control. -
Refinery and Chemical Reactors
Operates reliably in corrosive, high-temperature, and hazardous zones. -
Predictive Maintenance Systems
Feeds real-time displacement data into DCS, SCADA, or dedicated CMS platforms.
Product Advantages
-
True Plug-and-Play Calibration
Probe and converter are paired and documented at the factory—no field trimming needed. -
Wide Output Choice
4–20 mA loop for PLC/DCS integration or high-bandwidth voltage for dynamic analysis. -
High-Temperature Capability
Probe materials and cable insulation tolerate up to 180 °C without performance drift. -
Exceptional EMC Immunity
Robust shielding and differential circuitry maintain accuracy in high-noise cabinets. -
Rugged Construction
Hermetically sealed stainless-steel probe withstands oil splash, steam ingress, and vibration. -
Low Lifecycle Cost
Non-contact sensing eliminates mechanical wear; zero routine maintenance required. -
Flexible Mounting Hardware
Standard and custom adapters support retrofits on legacy monitoring systems. -
Global Compliance
CE-marked, EN 61000 certified, with optional ATEX/IECEx variants for Zone 1 installations.
FAQ
-
What is the default output of the CON020/T4 converter?
A calibrated 4–20 mA signal proportional to shaft displacement; voltage mode can be enabled via jumper. -
Can I interchange this probe with a different CON020 variant?
No—the PR6424/01 is calibrated exclusively with its shipped CON020/T4. Mixing pairs invalidates accuracy. -
How does cable length affect sensitivity?
Length is included in the factory calibration; replacing or shortening the cable changes the transfer function. -
What is the maximum allowable vibration amplitude before clipping?
The linear range extends to ±2 mm; excursions beyond will saturate the converter output. -
Does the system support dynamic vibration (AC) and static position (DC) simultaneously?
Yes—the converter superimposes the dynamic AC component on the DC bias for holistic monitoring. -
Is reverse-polarity protection built in?
Yes, the converter incorporates diode protection to prevent damage from wiring errors. -
Can the sensor be installed in an ATEX Zone 1 gas atmosphere?
An Ex ia certified version is available when ordered with the proper option code. -
What is the maximum loop impedance for 4–20 mA operation?
Up to 600 Ω at 24 V DC supply; derate linearly with lower supply voltages. -
How is temperature drift compensated?
The CON020/T4 uses precision thermocompensation networks to keep drift below ±0.25 % FS/100 °C. -
Can I split the 4–20 mA signal to two receivers?
Yes, provided the total loop resistance (both receivers plus wiring) stays within the specified limit.
Related Models from the Same Series
| Model | Key Feature | Measuring Range | Tip Ø |
|---|---|---|---|
| PR6424/010-040 | Short-range probe, high linearity | ±1 mm | 16 mm |
| PR6424/012-140 | High-temperature variant | ±2 mm | 12 mm |
| PR6424/013-130 | Wide-range 16 mm probe | ±2 mm | 16 mm |
| PR6424/017-000 | Extended linear range | ±3 mm | 16 mm |
| PR6424/018-000 | Ultra-wide range, 25 mm tip | ±5 mm | 25 mm |
| PR6424/01C-130 | Chemically coated for corrosive environments | ±2 mm | 16 mm |
Popular Models from the Same Brand (Epro / B&K Vibro)
| Model | Function | Typical Converter | Primary Use |
|---|---|---|---|
| PR6423/002-000 | 5 mm proximity probe | CON021 | Compact motors, machine tools |
| PR6423/005-010 | 8 mm general-purpose probe | CON021 | Pumps, standard compressors |
| MMS6312 | Modular monitoring & protection module | — | Multi-channel vibration analysis |
| CON021/916-160 | Signal converter for PR642x probes | — | 0–20 V output, extended diagnostics |
| MMS6120 | Rack-based vibration monitoring unit | — | Centralized turbine protection |
| CON041 | High-spec converter, EMC-hardened | — | High-temperature, high-noise sites |
