High Temperature Accelerometer MTN/1105C
- Manufacturer: Monitran
- Category: Accelerometers and Vibration Sensors, Amplified, SENSORS
Vibration monitoring in extreme heat environments, such as industrial furnaces, gas turbines, or engine exhausts, renders conventional sensors unusable due to the degradation of their internal electronics. The MTN/1105C accelerometer solves this problem with a pure piezoelectric design, eliminating the need for integrated electronics in the sensor head. This allows it to operate continuously on surfaces with temperatures up to 250°C without any loss of sensitivity. This "C" variant includes a factory-sealed, integral cable designed to withstand the most severe thermal conditions.
This system requires a specific measurement architecture: the sensor head is connected via its integral high-temperature cable (capable of withstanding up to 265°C) to an in-line charge amplifier located in a lower temperature zone (maximum 120°C). The amplifier converts the charge signal (pC/g) into a standard 100mV/g voltage signal compatible with any data collector or protection system. Its excellent frequency response of up to 12 kHz makes it ideal for detecting faults in bearings and gears in heavy thermal machinery.
Manufactured from high-quality stainless steel and featuring an IP67 hermetic seal, the MTN/1105C ensures signal integrity by eliminating intermediate connectors in the hottest areas, thus reducing potential points of failure due to oxidation or thermal fatigue. It is the benchmark instrument for maintenance engineers who require reliable data at measurement points where other sensors would fail, guaranteeing asset integrity through continuous monitoring under the most demanding thermal conditions.
- Extreme thermal resistance of 250°C on contact surface.
- Sealed integral cable for maximum protection and reliability in heat.
- Head without electronics for maximum durability in critical environments.
- Robust stainless steel construction with IP67 protection rating.
Technical Frequently Asked Questions
1. Why choose the MTN/1105C version with integrated cable?
By eliminating the connector on the sensor head, the risks of disconnection due to vibration or failure due to contamination and corrosion in the high-temperature zone are removed. The integral ETFE cable is hermetically sealed, ensuring constant impedance and a much more stable load signal.
2. What care does the high-temperature cable require?
Although the cable can withstand temperatures up to 265°C, direct contact with incandescent surfaces or sharp edges should be avoided. If the environment presents additional mechanical hazards, protection with a flexible stainless steel conduit is recommended to ensure a secure connection to the in-line amplifier.
3. Is a specific load amplifier necessary?
Yes, the MTN/1105C outputs a picoCoulomb (pC) signal that cannot be read directly by standard IEPE equipment. The use of a Monitran charge amplifier to convert the signal to 100mV/g is mandatory for compatibility with conventional monitoring systems.
Properties
| Feature | Technical Specification |
| Sensor Type | Piezoelectric Charge Accelerometer (pC Output) |
| Configurable Models | MTN/1105C (Top Entry), MTN/1105SCE (Side Entry) |
| Mounting Options | M6, M8, 1/4″ UNF or Quick-Fit adapters |
| Maximum Temperature | 250 °C (Continuous operation) |
| Load Sensitivity | 50 pC/g (Nominal value) |
| System Exit | 100 mV/g (Via external amplifier) |
| Frequency Response | 0.8 Hz to 12 kHz (±3dB) |
| Dynamic Range | ±80 g |
| Housing Material | Stainless Steel (Industrial Grade) |
| Degree of Protection | IP67 (Hermetically sealed) |
| Cable Type | Integral shielded ETFE (Withstands 265 °C) |
| Amplifier Required | Monitran in-line load amplifier |
| Electrical Insulation | Galvanically Isolated Base |
| Mounted Resonance | 18 kHz (Nominal value) |
| Cable Length | Configurable (Usually supplied with 5m) |
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