The PR6423 Eddy Current Sensor is a non-contact displacement sensor designed for critical turbomachinery applications, including steam, gas, and hydro turbines, compressors, gearboxes, pumps, and fans. It measures radial and axial shaft displacement, position, eccentricity, and speed.
Specifications
Performance
| Parameter |
Specification |
| 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 to 45°C (32 to 113°F) |
| Deviation from DSL |
± 0.025 mm (± 1 mil) @ 0 to 45°C (32 to 113°F) |
Measuring Target
| Parameter |
Specification |
| Minimum Shaft Diameter |
25 mm (0.79″) |
| Target Material |
42CrMo4 (AISI/SAE 4140) (Other materials on request) |
Environmental and General
| Parameter |
Specification |
| Protection Class |
IP66 (IEC 60529) |
| Operating Temperature Range |
Sensor: -35 to +180°C (-31 to 356°F); Cable: -35 to +150°C (-31 to 302°F) |
| Material |
Sensor Tip: PEEK; Case: Stainless Steel; Cable: PTFE; Connector: Brass (nickel-plated) |
| Weight |
Approx. 100 grams (3.53 oz) |
Model: CON021 Eddy Current Signal Converter
Functionality
The CON021 signal converter is designed for use with eddy current sensors, such as PR6423, to process signals for measuring radial and axial shaft displacement, position, eccentricity, and speed.
Specifications
Dynamic Performance
| Parameter |
Specification |
| Frequency Range (-3 dB) |
0 to 20000 Hz |
| Rise Time |
<15 µs |
Environmental
| Parameter |
Specification |
| Operating Temperature Range |
-30 to +100°C (-22 to 212°F) |
| Shock and Vibration |
5g @ 60 Hz @ 25°C (77°F) |
| Protection Class |
IP20 |
Power & Electrical
| Parameter |
Specification |
| Supply Voltage Range |
-23V to -32V (Output: -4V to -20V) |
|
-21V to -32V (Output: -2V to -18V) |
Physical
| Parameter |
Specification |
| Housing Material |
LMgSi 0.5 F22 |
| Weight |
~120 grams (4.24 oz) |
| Mounting |
4 Screws (M5x20, included) |
| Connections |
Transducer: Self-locking Lemo-Plug; Supply/Output: Screw Terminal (max. 1.5 mm² wire) |
Ordering Information
PR6423 Eddy Current Sensor
| Parameter |
Value |
| Tip Diameter |
8 mm |
| Case Threads |
M10x1 |
| Armored Cable |
No |
| Case Thread Length |
55 mm |
| Cable Length |
8 m (1 m + 7 m) |
| Cable End |
Lemo |
Example Model: PR6423-003-030-CN
Description: ECS 8 mm, M10x1, No Armor, 55 mm Sleeve, 1+7 m Cable, Lemo Connector.
CON021 Signal Converter
| Parameter |
Value |
| Sensor Type |
PR6423 |
| Measuring Range |
2.0 mm (Standard Range) |
| Linearity Error |
≤ 1.0% |
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