EPRO PR6424/013-130 M18 Thread 3mm Large-range 3m Armored Eddy Current Probe

The EPRO PR6424/013-130 is a high-protection heavy-duty armored eddy current sensor in the premium PR6424 series, tailored exclusively for harsh heavy industrial monitoring scenarios. Differing from standard PR6424 basic models, this unit integrates M18×1.5 heavy-duty mounting thread, 3mm large linear measurement range, 3m full armored cable and 130-level enhanced mechanical protection. It solves common field pain points such as large shaft runout, severe equipment vibration, cable extrusion damage and complex electromagnetic interference in heavy rotating machinery. Fully calibrated for terminal wiring matching and compatible with MMS6000 TSI system and CON series preamplifiers, it is the preferred high-reliability monitoring solution for large-scale heavy-duty units in petrochemical, thermal power and heavy industrial fields.

1. Heavy-duty Armored Structural & Installation Advantages

PR6424/013-130 adopts thickened integral stainless steel probe body with dual oil-proof and high-temperature anti-corrosion passivation treatment. The classic M18×1.5 large-diameter thread structure delivers ultra-high mounting rigidity and anti-loosening performance, far exceeding the structural stability of conventional M10 probes, perfectly resisting long-term high-load vibration and mechanical impact of heavy compressors and large turbines without installation deviation or thread loosening.

Equipped with exclusive 3m medium-distance full armored cable and 130 enhanced protection specification, the probe adds seamless metal outer armor to withstand field extrusion, sharp friction and tensile force, completely avoiding cable breakage and insulation aging in maintenance-intensive harsh equipment areas. Optimized for terminal centralized wiring, it adapts to medium-span equipment-cabinet layout demands. It supports direct plug-and-play replacement of old PR6424 large-range probes, eliminating on-site structural modification and reducing system renovation difficulty.

2. 3mm Large-range Professional Measurement Performance

Inheriting the core advantage of the PR6424 series, the sensor features a 3mm extended effective linear range and professional 2.67V/mm sensitivity, breaking the 2mm range limitation of ordinary PR6423 probes. Precisely factory-calibrated with standard ferromagnetic steel, the full-scale linear error is strictly controlled within ±1% FS. It accurately captures large-amplitude vibration, excessive radial runout and large floating displacement of heavy high-speed rotating units, effectively solving measurement saturation and data distortion failures of standard probes under heavy-load fluctuating working conditions.

It supports an ultra-wide 0.1kHz–50kHz full-band frequency response, covering ultra-low-speed creeping, variable-speed adjustment and full-load high-speed operation of all heavy industrial equipment. With a wide temperature tolerance of -40℃ to +180℃ and ultra-low thermal drift, it maintains stable linear measurement accuracy under drastic field temperature changes and long-term heat radiation, adapting to 24/7 uninterrupted heavy-duty online monitoring and lowering frequent calibration maintenance costs.

3. 3m Armored Cable Transmission & Anti-interference Strength

Matched with customized 3-meter high-grade armored cable, the probe adopts oxygen-free copper core and high-temperature PTFE composite insulation layer, possessing superior anti-aging, oil corrosion and thermal radiation resistance. The integrated metal armor layer provides all-round mechanical protection, eliminating extrusion deformation, bending fatigue and wear damage that easily occur in ordinary rigid cables during long-term field operation.

Adopting double-layer shielding of full-coverage aluminum foil and tinned copper braid, the cable strongly suppresses strong electromagnetic coupling noise, power frequency interference and ground loop potential difference generated by surrounding high-power heavy equipment. After exclusive factory impedance matching for 3m medium-long armored lines, it realizes low-loss and distortion-free transmission of wide-frequency large-range eddy current signals, ensuring zero-jitter stable data output in complex heavy industrial electromagnetic environments.

4. Preamplifier Matching & Terminal Wiring Adaptation

Tailored for 130 armored terminal wiring characteristics and 3mm large-range signal demodulation, PR6424/013-130 forms high-stability heavy-duty monitoring loops with CON series preamplifiers, fully compatible with MMS6000 TSI system modules, with scenario-oriented differentiated matching advantages:

• CON031: Dedicated terminal wiring preamplifier, perfectly matched with 130 armored probe for centralized terminal box wiring, realizing unified line sorting and standardized management for medium-span heavy-duty monitoring points, ideal for old system batch upgrading.

• CON021: Cabinet DIN-rail preamplifier with large-range signal calibration, optimized for indoor centralized acquisition of 3m armored probe signals, restoring complete large-amplitude vibration data with high fidelity.

• CON011: Field explosion-proof preamplifier with enhanced anti-interference circuit, adapting to armored probe wiring in outdoor heavy industrial hazardous areas, ensuring stable signal transmission under severe field mechanical and electromagnetic interference.

5. Core Product Selling Points & Industrial Value

• 3mm Large-range Heavy-duty Measurement: Extended linear range adapts to large displacement and high-amplitude vibration of heavy rotating machinery, completely avoiding measurement saturation of standard probes.

• M18 Reinforced Thread Stability: Large-diameter thickened thread structure improves mounting firmness, resisting extreme vibration and impact of heavy-load equipment for long-term drift-free operation.

• 3m 130-level Armored Protection: Full metal armored cable solves field mechanical damage risks of ordinary cables, greatly improving durability and environmental adaptability in harsh working conditions.

• Optimized Medium-long Distance Transmission: Professional impedance matching for 3m armored lines eliminates signal attenuation and waveform distortion, ensuring consistent precision of medium-span monitoring loops.

• Specialized Terminal Wiring Upgrade: Perfectly fits centralized terminal wiring mode, facilitating system standardization renovation and reducing later operation and maintenance difficulty.

6. Industrial Application Scenarios

• Medium-distance large-amplitude vibration and displacement monitoring of heavy-duty steam turbines and large gas turbines in thermal power plants

• Condition monitoring of petrochemical high-power centrifugal compressors and heavy process rotating machinery with severe vibration and cable wear risks

• Harsh environment online monitoring of heavy industrial equipment in high-temperature, oil-mist and strong electromagnetic interference sites

• High-protection and large-range upgrade renovation of old small-range non-armored probe monitoring systems for heavy-duty units