Emerson PR6423/006-131 CON041 Eddy Current Sensor and Signal Converter

Overview

The PR6423 8mm Eddy Current Sensor and CON041 Signal Converter are designed for non-contact measurement in critical turbomachinery applications, such as steam, gas, and hydro turbines, compressors, gearboxes, pumps, and fans. They measure radial and axial shaft dynamic displacement, position, eccentricity, and speed.

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PR6423 Eddy Current Sensor

Performance

• Linear Measurement Range: 2 mm (80 mils)
• Initial Air Gap: 0.5 mm (20 mils)
• Incremental Scale Factor (ISF): ISO 8 V/mm (203.2 mV/mil) ± 5%
  • Temperature range: 0 to 45°C (+32 to +113°F)
• Deviation from Best Fit Straight Line (DSL): ± 0.025 mm (± 1 mil)
  • Temperature range: 0 to 45°C (+32 to +113°F)

Measuring Target

• Minimum Shaft Diameter: 25 mm (0.79”)
• Target Material: Ferromagnetic steel, specifically 42CrMo4 (AISI/SAE 4140) as standard (other materials available upon request)

Environmental and General Specifications

• Protection Class: IP66, IEC 60529
• Operating Temperature Range:
  • Sensor with 1m cable: -35 to +200°C (-31 to 392°F)
  • Cable & Connector: -35 to +150°C (-31 to 302°F)
• Material:
  • Sensor Tip: PEEK (Polyether Ether Ketone)
  • Case: Stainless Steel
  • Cable: PTFE (Polytetrafluoroethylene)
  • Connector: Brass, nickel-plated
• Weight: Approx. 100 grams (3.53 oz) with 1m cable

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CON041 Eddy Current Signal Converter

Dynamic Performance

• Frequency Range (-3 dB): 0 to 20,000 Hz
• Rise Time: <15 µs
• Compatibility: Designed for use with PR6422, PR6423, PR6424, PR6425, PR6426
  • Extended range use: CON041/91x-xxx
  • Note: PR6425 requires an extended range converter

Environmental Specifications

• Operating Temperature Range: -30 to 100°C (-22 to 212°F)
• Shock and Vibration: 5g @ 60Hz @ 25°C (77°F)
• Protection Class: IP20

Power & Electrical Specifications

• Supply Voltage Range:
  • -23V to -32V (Output Range -4V to -20V)
  • -21V to -32V (Output Range -2V to -18V)

Physical Specifications

• Housing Material: PA 6.6
• Weight: ~60 grams (2.12 oz)
• Mounting: DIN Rail
• Connections: Screw Terminal (Max. 1.5mm², with wire-end sleeves)

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Ordering Information

Tip Diameter	Case Threads	Armored Cable	Model No.
8mm	M10x1	No	PR6423/00

Model No.: PR6423/00

• Case Thread X: 6 85mm
• Adapter Plug X: 1 Without
• Cable Length X: 3 8.0m
• Cable End X: 1 Open
  • Not available if Reverse Mount without Adapter Plug is chosen.

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PR6423/006-131: ECS 8mm, M10X1, No Armor, 85 mm Sleeve, Without Adapter Plug, 1+7m Cable, Open

CON041 PR6423 Measuring Range: 2.0 mm (Standard Range)
Linearity Error: ≤ 1.0%

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