Description
Product Description
Overview
The 16 mm Eddy Current Sensor by Emerson is a non-contact measurement device engineered for high-performance turbomachinery. It provides precise monitoring of radial and axial shaft displacement, position, eccentricity, and rotational speed. Designed for steam, gas, and hydro turbines, compressors, pumps, and large fans, it ensures reliable condition monitoring under demanding operational conditions.
Technical Specifications
| Parameter |
Specification |
| Sensor Type |
Non-contact Eddy Current |
| Target Material |
Ferromagnetic Steel (42CrMo4 standard) |
| Radial / Axial Displacement Measurement |
±2 mm static; 0–1,000 µm dynamic |
| Sensitivity / Linearity |
4 V/mm (101.6 mV/mil) ≤ ±1.5% |
| Nominal Air Gap (Center) |
2.7 mm (0.11 in) |
| Long-Term Drift |
<0.3% |
| Maximum Surface Speed |
2,500 m/s (98,425 ips) |
| Minimum Shaft Diameter |
80 mm |
| Operating Temperature |
-35 °C to 150 °C (-31 °F to 302 °F) |
| Temperature-Induced Error |
<4% per 100 K (API 670 compliant) |
| Pressure Resistance (Sensor Head) |
10,000 hPa (145 psi) |
| Shock & Vibration |
5 g at 60 Hz @ 25 °C (77 °F) |
| Material |
Sleeve: Stainless Steel; Cable: PTFE |
| Weight (Sensor + 1 m Cable, no Armor) |
~200 g (7.05 oz) |
Key Features
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Non-contact eddy current measurement for precise shaft displacement and speed detection.
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High linearity and low long-term drift ensure stable, accurate readings.
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Compact 16 mm design allows integration into tight spaces.
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Engineered for high-speed shafts up to 2,500 m/s and shafts ≥80 mm diameter.
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Robust construction withstands high temperature, pressure, and mechanical shock.
Applications
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Turbomachinery including steam, gas, and hydro turbines.
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Pumps, compressors, and industrial fans requiring high-precision monitoring.
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Condition monitoring systems aligned with API 670 standards.
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Predictive maintenance and shaft dynamics analysis in mission-critical environments.
FAQ
Q: What is the suitable air gap for this sensor?
A: Nominal air gap is approximately 2.7 mm (0.11 in). Deviations should be minimized for optimal accuracy.
Q: Can this sensor handle high surface speeds?
A: Yes, the sensor is rated for maximum surface speeds up to 2,500 m/s (98,425 ips).
Q: How does the 16 mm sensor compare with larger models?
A: Its compact size allows installation in confined spaces while maintaining high sensitivity and linearity similar to larger eddy current sensors.
