Emerson PR6423/10R-131 CON041 Eddy Current Sensor

PR6423 Eddy Current Sensor Overview

The PR6423 is an 8mm non-contact eddy current sensor designed for high-precision measurement of shaft displacement, position, eccentricity, and speed in critical turbomachinery applications. Its robust design ensures reliable operation in harsh environments, such as steam, gas, and hydro turbines, compressors, gearboxes, pumps, and fans.

Key Features and Specifications

Performance:

Linear Measurement Range: 2 mm (80 mils).
Initial Air Gap: 0.5 mm (20 mils).
Incremental Scale Factor (ISF): 8 V/mm (203.2 mV/mil) ± 5% (0–45°C).
Deviation from DSL: ±0.025 mm (±1 mil) within the operational temperature range.

Target Material:

Minimum Shaft Diameter: 25 mm (0.79”).
Standard Material: Ferromagnetic Steel (42CrMo4 / AISI/SAE 4140).

Environmental:

Operating Temperature Range:
- Sensor (including 1m cable): -35°C to +180°C (-31°F to +356°F).
- Cable & Connector: -35°C to +150°C (-31°F to +302°F).
Protection Class: IP66 (IEC 60529).

Physical Characteristics:

Sensor Tip Material: PEEK (Polyether Ether Ketone).
Cable Material: PTFE (Polytetrafluoroethylene).
Connector Material: Brass, nickel-plated.
Weight: Approx. 100 grams (3.53 oz) with a 1m cable.

CON041 Signal Converter Overview

The CON041 signal converter is optimized for use with PR6422–PR6426 sensors, offering robust signal processing capabilities for measuring radial and axial displacement, position, eccentricity, and speed.

Dynamic Performance:

Frequency Range (-3 dB): 0–20,000 Hz.
Rise Time: <15µs.

Environmental:

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

Power & Electrical:

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

Physical Characteristics:

Material: PA 6.6.
Weight: ~60 grams (2.12 oz).
Mounting: DIN Rail.

Dimensions (PR6423/10R-131):

Case Thread: M10x1 or 3/8”-24 UNF.
Cable Diameter:
- Standard: 2.8 mm (min. bending radius: 25 mm).
- Armored: 6 mm (min. bending radius: 35 mm).
Cable Length: 8.0m (1+7m configuration).
Connector: Lemo (male), 11.0 mm diameter, or open cable end.

Ordering Example: PR6423/10R-131

Tip Diameter: 8mm.
Case Thread: 3/8”-24 UNF.
Mounting: Reverse.
Armored Cable: No.
Adapter Plug: None.
Cable Length: 1+7m.
Cable End: Open.

Model Number: CON041

Sensor Type: PR6423.
Measuring Range: 2.0 mm (Standard Range).
Linearity Error: ≤1.0%

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