Epro CON021+PR6424/010-120 Eddy Current Sensor

Product Description

The CON021 + PR6424/010-120 measurement chain by Emerson Epro is engineered for continuous, non-contact monitoring of shaft motion in rotating equipment. This system combines a 16 mm eddy-current probe with a dedicated signal converter, enabling accurate detection of vibration, displacement, and shaft position in real time.

The probe captures high-resolution displacement data, while the CON021 module processes and converts the signal into standardized analog outputs for integration with control systems such as PLCs, DCS platforms, and machinery protection systems. Its design supports stable operation in demanding industrial environments, including high-speed turbomachinery.

System Highlights

• Contactless measurement eliminates mechanical wear and drift

• Stable signal conditioning for reliable long-term monitoring

• Wide dynamic response for both low- and high-frequency vibration signals

• Industrial-grade construction suitable for elevated temperatures and harsh conditions

• Flexible output options for seamless system integration

Technical Specifications

Eddy-Current Probe: PR6424/010-120

• Model: PR6424/010-120

• Probe Diameter: 16 mm

• Measurement Principle: Eddy current (non-contact)

Measurement Performance

• Static Range: ±2.0 mm

• Dynamic Range: 0 to 1000 µm

• Sensitivity: 4 V/mm (approx. 100 mV/mil)

• Linearity Deviation: ≤ ±1.5% (system level)

• Recommended Gap: ~2.7 mm

Mechanical & Installation Data

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

• Minimum Shaft Diameter: 80 mm or greater

• Cable Length: 10 m (integrated cable)

• Protection Rating: IP66

• Operating Temperature: –35°C to +150°C

Signal Converter: CON021

• Model: CON021

• Signal Bandwidth: 0 to 20 kHz (–3 dB)

• Response Time: <15 µs

Output Configuration

• Voltage Output: 0 to 10 V DC

• Current Output: 4 to 20 mA

• Output type selectable depending on configuration

Electrical Requirements

• Supply Voltage: –23 V to –32 V DC (typical operating range)

Mechanical & Environmental

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

• Protection Class: IP20 (panel-mounted module)

Connections

• Sensor Interface: LEMO self-locking connector

• Output/Power: Screw terminal connections

Certifications

• CE compliant

• Hazardous area approvals available (ATEX, IECEx, CSA depending on configuration)

Functional Capabilities

• Continuous shaft vibration monitoring

• Axial and radial displacement tracking

• Detection of shaft eccentricity and mechanical instability

• Integration into machinery protection architectures

• Suitable for both standalone monitoring and centralized control systems

Typical Applications

• Steam and gas turbines

• Centrifugal and axial compressors

• Industrial pumps and fans

• High-speed rotating shafts in energy and process industries

FAQ

Q: Can the output signal be directly connected to a PLC or DCS?
A: Yes, the CON021 provides standard 0–10 V or 4–20 mA outputs, enabling direct integration with most industrial control systems.

Q: What makes this system suitable for turbomachinery?
A: The combination of high sensitivity, wide frequency response, and robust temperature tolerance ensures reliable operation in high-speed rotating equipment.

Q: Is the probe suitable for outdoor or harsh environments?
A: The PR6424/010-120 probe is rated IP66 and designed to withstand exposure to dust, moisture, and elevated temperatures.