Epro CON010+PR6426/010-140 Eddy Current Displacement System

Product Description

The PR6426/010-140 + CON010 measurement solution from Emerson Electric is a heavy-duty eddy-current based monitoring system engineered for large rotor diameter machinery. It is designed to deliver precise, continuous tracking of shaft movement and vibration behavior in high-energy turbomachinery environments.

This configuration combines a 32 mm probe with a dedicated signal conditioning module. The probe performs non-contact measurement of shaft dynamics, while the CON010 converter transforms raw eddy-current signals into standardized analog outputs suitable for protection systems, PLCs, and condition monitoring platforms.

The system is optimized for large-shaft applications where extended measurement range, thermal stability, and high dynamic accuracy are required.

System Architecture and Function

• Non-contact eddy-current sensing for large rotating shafts

• High-stability signal conditioning via CON010 converter

• Supports continuous monitoring of vibration and axial movement

• Suitable for long-term operation in high-temperature environments

• Designed for integration into API 670-compliant protection systems

Technical Specifications

Probe Unit (PR6426/010-140)

• Model: PR6426/010-140

• Probe Diameter: 32 mm

• Measurement Range: up to 14 mm displacement (radial/axial)

• Sensitivity: 2 V/mm (50.8 mV/mil), linearity ≤ ±1.5%

• Minimum Shaft Diameter: ≥ 200 mm

• Frequency Response: DC to 10 kHz

• Target Material: Ferromagnetic steel (e.g., 42CrMo4 / equivalent)

• Output Type: Analog displacement signal (pre-conditioning stage)

Environmental Performance

• Operating Temperature: –35 °C to +160 °C

• Short-term Exposure: up to 200 °C (≤4 hours)

• Pressure Resistance: 6,500 hPa (approx. 94 psi)

• Shock Resistance: up to 40 g

• Protection Rating: IP66

Mechanical Construction

• Housing: Stainless steel

• Sensing Tip: PEEK high-temperature composite

• Cable Type: PTFE insulated (armored or standard options)

• Cable Length Options: 4 m / 5 m / 8 m / 10 m

• Weight: approx. 800 g (probe with 1 m cable)

Signal Converter (CON010)

• Function: Signal amplification and linearization

• Supply Voltage: –23 V to –32 V DC

• Output Signal: –4 V to –20 V DC with superimposed AC vibration component

• Bandwidth: 0 to 20 kHz (–3 dB)

• System Linearity Error: ≤ 2.5%

Environmental Conditions

• Operating Temperature: –30 °C to +100 °C

• Protection Class: IP20 (panel-mounted module)

• Max Sensor Cable Distance: recommended ≤ 5 m

System-Level Performance

• Measured Parameters:

• Radial shaft vibration

• Axial displacement

• Shaft eccentricity

• Speed / keyphasor signals

• System Accuracy: ±0.1% full scale (application dependent)

• Dynamic Range: DC to 20 kHz

• Compliance Standards: API 670, ISO 10817-1, DIN 45670, ATEX, IECEx, CSA

Application Areas

The PR6426/010-140 + CON010 system is typically deployed in large rotating machinery where high stability and extended measurement range are required:

• Steam and gas turbines

• Hydro turbines

• Large centrifugal compressors

• Industrial pumps and fans

• Heavy-duty gearbox and rotor systems

FAQ

Q: Why is a 32 mm probe used in this system?
A: The larger probe increases sensitivity and stability when monitoring large-diameter shafts above 200 mm.

Q: Can the system operate at high temperatures?
A: Yes, the probe supports continuous operation up to 160 °C and short-term exposure up to 200 °C.

Q: What is the role of the CON010 module?
A: It conditions raw eddy-current signals into standardized analog outputs for control and protection systems.

Q: Is this system suitable for safety-critical monitoring?
A: Yes, it is designed for API 670-compliant applications and supports global hazardous-area certifications.