Eddy Current Displacement Sensor MTN/EP200
- Manufacturer: Monitran
- Category: Displacement, Eddy Current, SENSORS
Monitoring relative position and vibration in medium-sized rotating machinery requires sensors that offer sufficient measurement range to compensate for operating clearances without losing sensitivity. The MTN/EP200 addresses this challenge by providing highly reliable, non-contact displacement measurement, ideal for monitoring shaft integrity in multistage pumps and compressors where a 5 mm measurement range is the optimal technical standard.
Thanks to its eddy current technology, this sensor delivers a nominal sensitivity of 3.6 mV/µm with excellent linearity, similar to the 1%. Its electronic architecture allows it to capture data from DC (static shaft position) up to dynamic frequencies of 10 kHz, facilitating real-time diagnosis of shaft orbits, eccentricities, and radial vibrations. Because there is no physical contact, the sensor eliminates the risk of mechanical wear and ensures a long service life, even in continuous 24/7 operation.
The MTN/EP200's mechanical design is notable for its robustness, featuring a 13 mm diameter stainless steel body with an M16 thread. Its PEEK head ensures superior dielectric stability in the presence of industrial oils and vapors, withstanding probe temperatures up to 180°C. The system is completed with PTFE-insulated RG179 low-impedance cables, guaranteeing noise-free signal transmission to the MTN/ECPD series drivers installed in control cabinets.
- Versatile linear range from 0 to 5 mm for general applications.
- Extreme environmental resistance with operation up to 180°C at the sensor.
- M16 Compact Industrial Body for installations in confined spaces.
- High-speed detection up to 10 kHz for dynamic analysis.
Technical Frequently Asked Questions
1. Why choose the 5mm range over other models?
The MTN/EP200 offers the best compromise between resolution and range for most industrial pumps and fans. Its 5 mm travel allows for easier installation (greater gap adjustment range) than 2 mm models, while maintaining superior sensitivity (3.6 mV/µm) compared to longer-range models.
2. What happens if the temperature exceeds 150°C?
Although the sensor operates up to 180°C, its thermal sensitivity is lower than the 5% even at 150°C. This ensures that the displacement measurement is extremely stable against the temperature variations common during the start-up and shutdown of thermal turbines.
3. Is it compatible with any shaft material?
Standard calibration is performed on AISI 4140 steel. If the machine shaft is made of a different material (such as 300 series stainless steel), the sensitivity of 3.6 mV/µm will be affected. In these cases, the associated driver must be recalibrated to ensure the accuracy of the displacement measurement.
Properties
| Feature | Technical Specification |
| Device Type | Contactless Displacement Sensor |
| Measurement Technology | Foucault currents (Eddy Current) |
| Linear Range of Measurement | 0 to 5 mm |
| Nominal Sensitivity | 3.6 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-performance engineering thermoplastic) |
| Body Material | Stainless steel |
| Mounting Thread | M16 x 1.5mm |
| Body Diameter | 13 mm |
| Total Probe Length | 62 mm (Including tip) |
| Maximum Cable Length | 9 meters (RG179 PTFE cable) |
| Calibration Material | AISI 4140 grade steel |
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