Eddy Current Displacement Sensor MTN/EP080
- Manufacturer: Monitran
- Category: Displacement, Eddy Current, SENSORS
Monitoring shaft dynamics in turbomachinery and high-speed systems requires sensors capable of measuring microns of displacement without physical contact to avoid wear or interference. The MTN/EP080 addresses this challenge by measuring the gap and radial vibration of metal shafts, which is critical for monitoring eccentricity and clearance conditions in oil-film bearings where the sensor must ignore the presence of lubricants.
Based on the eddy current principle, this sensor offers a resolution of 8 mV/µm over a linear range of 0 to 2 mm. Its electronics allow a frequency response from DC (static position measurement) up to 10 kHz (high-speed dynamic vibration), guaranteeing the nominal linearity of the 1%, essential for machine protection systems that prevent catastrophic contact between the shaft and the stator.
Built to withstand harsh environments, it features a PEEK tip and stainless steel body with an M8 thread, allowing the probe to operate in temperatures up to 180°C. The system uses PTFE-insulated RG179 cabling for lengths up to 9 meters, ensuring clean signal transmission to MTN/6000 series monitoring racks or industrial PLCs powered by -24V DC.
- Non-contact measurement high resolution (8 mV/µm).
- Operating temperature range in probe up to 180°C.
- M8 Robust Body made of stainless steel with environmental IP protection.
- Broad spectrum response from static (DC) to 10 kHz.
Technical Frequently Asked Questions
1. Why does this sensor use a negative power supply of -24V DC?
It is the industry standard for proximity displacement sensors; it substantially improves immunity to electrical noise and ensures a cleaner measurement signal in critical industrial environments.
2. What advantage does Peek material offer in the measuring head?
Peek provides exceptional dielectric and thermal stability, protecting the accuracy of displacement measurement against hot industrial oils and extreme temperatures.
3. How does the shaft (target) material influence the measurement?
The measurement depends on the conductivity of the material; the sensor is calibrated for AISI 4140 steel. Use on other materials alters the sensitivity and requires a specific calibration adjustment.
Properties
| Feature | Technical Specification |
| Device Type | Eddy Current Sensor |
| Function | Non-contact proximity and vibration measurement |
| Linear Range | 0 to 2 mm |
| Nominal Sensitivity | 8 mV/µm |
| Linearity | 1% (Nominal) |
| Frequency Response | DC up to 10 kHz |
| Nutritional Requirements | -24V DC @ 30mA (Negative Supply) |
| Probe Temperature | -30 °C to +180 °C |
| Driver Temperature | -20 °C to +80 °C |
| Tip Material | PEEK (High-performance engineering thermoplastic) |
| Body Material | Stainless steel |
| Mounting Thread | M8 (Probe diameter 6mm) |
| Cable Type | RG179 with PTFE insulation |
| Maximum Cable Length | 9 meters |
| Calibration Material | AISI 4140 grade steel |
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