Eddy Current Displacement Sensor MTN/EP340
- Manufacturer: Monitran
- Category: Displacement, Eddy Current, SENSORS
Monitoring large rotating assets, such as steam turbines or industrial blowers, requires displacement sensors capable of covering wide measurement ranges without sacrificing resolution. The MTN/EP340 solves the problem of axial position and vibration measurement on large shafts where a short-range sensor would be insufficient. Its design allows for contactless shaft movement monitoring, preventing wear-related failures and enabling continuous bearing condition monitoring.
Based on eddy current technology, this sensor offers a linear measurement range of 0 to 8.5 mm with a nominal sensitivity of 2 mV/µm. Its responsiveness spans from static position measurement (DC) to dynamic frequencies of 10 kHz, ensuring linearity of the 1%. This combination of range and speed is crucial for detecting axial expansion thermal variations and severe vibrations that could indicate critical misalignment in machinery.
Built to withstand exposure to oils and extreme temperatures up to 180°C, the MTN/EP340 features a robust stainless steel body with an M24 thread and a high-strength PEEK tip. The system integrates PTFE-insulated RG179 cables that maintain signal integrity up to 9 meters. It is an essential component for industrial safety systems requiring reliable gap measurement in environments with high mechanical and thermal stress.
- Extended linear range up to 8.5 mm for large displacements.
- Superior thermal resistance with continuous operation up to 180°C.
- M24 Industrial Body made of stainless steel for rigid mounting.
- Broad spectrum detection covering from DC to 10 kHz.
Technical Frequently Asked Questions
1. What is the difference in sensitivity compared to short-range models?
Unlike the EP080 model (8 mV/µm), the MTN/EP340 has a sensitivity of 2 mV/µm. This allows it to cover a much larger measurement range (8.5 mm vs. 2 mm) while maintaining the linearity required for large-travel axial displacement applications.
2. How does the size of the target affect the accuracy of the measurement?
To achieve maximum performance within the 8.5 mm range, the metal shaft or surface must be at least 2.5 times larger than the sensor tip diameter. A smaller target will reduce linearity and sensitivity, impacting the final accuracy of the displacement measurement.
3. Can it be installed in areas where lubricants are present?
Yes, the Peek tip is chemically inert and resistant to most oils and industrial fluids. Because it uses magnetic induction technology, the presence of non-conductive oil in the clearance does not affect the displacement measurement, making it ideal for monitoring submerged bearings.
Properties
| Feature | Technical Specification |
| Device Type | Contactless Displacement Sensor |
| Measurement Technology | Foucault currents (Eddy Current) |
| Linear Range of Measurement | 0 to 8.5 mm |
| Nominal Sensitivity | 2 mV/µm |
| Linearity of Measurement | 1% (Nominal) |
| Frequency Response | DC up to 10 kHz |
| Nutritional Requirements | -24V DC (Via MTN/ECPD Driver) |
| Probe Temperature | -30 °C to +180 °C |
| Head Material | PEEK (High-strength polymer) |
| Body Material | Stainless steel |
| Mounting Thread | M24 x 1.5mm |
| Probe Diameter | 20.5 mm |
| Total Probe Length | 75 mm (Including tip) |
| Maximum Cable Length | 9 meters (RG179 PTFE cable) |
| Calibration Material | AISI 4140 grade steel |
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