MTN/1109 Industrial Accelerometer
- Manufacturer: Monitran
- Category: Accelerometers and Vibration Sensors, Amplified, ATEX, SENSORS
Vibration monitoring in critical sectors such as petrochemicals and mining requires instrumentation that adapts to specific power supply standards. The MTN/1109 industrial accelerometer stands out for its ability to operate with a negative -24VDC power supply, providing an isolated AC output signal that enables long-term analysis of critical assets such as turbines, compressors, and process pumps.
This constant-current piezoelectric sensor offers an optimized frequency response from 2 Hz to 8 kHz, covering the spectrum needed to identify imbalances, misalignments, and incipient bearing failures. Its top-entry design and galvanically isolated base protect it against electrical interference and ground loops, ensuring that the signal transmitted to the acquisition system accurately reflects the machine's mechanical dynamics.
Built to withstand the chemical and mechanical stress of harsh environments, the MTN/1109 features a hermetically sealed stainless steel body meeting IP67 standards. Its wide operating temperature range, spanning from -55°C to 140°C, ensures stable performance in installations subjected to extreme climates or high-temperature processes, enabling safe and long-lasting integration into the plant's predictive maintenance infrastructure.
- -24VDC negative power supply for compatibility with specific systems.
- Extreme thermal resistance operating from -55°C to 140°C.
- Stainless steel construction with IP67 protection rating.
- galvanically isolated base to eliminate electrical noise from the plant.
Technical Frequently Asked Questions
1. Why does this model require a negative feed?
The MTN/1109 is designed to be compatible with monitoring racks and PLC input cards that use a -24VDC power architecture, common in certain industrial safety regulations and in systems that share infrastructure with Eddy Current proximity sensors.
2. What is the recommended mounting torque for this sensor?
To ensure proper transmission of high-frequency vibrations, the sensor must be mounted on a flat, clean surface with a torque of 8 Nm. Improper adjustment will reduce the mounted resonant frequency, affecting the accuracy of high-frequency readings.
3. How does the MTN/1109IC version differ?
The "IC" version is the intrinsically safe variant, certified under ATEX and IECEx standards for operation in explosive atmospheres. It is the required option for installations in classified areas within refineries or gas processing plants.
Properties
| Feature | Technical Specification |
| Sensor Type | Piezoelectric Accelerometer (Constant Current) |
| Available Sensitivities | Configurable: 10, 30, 50 or 100mV/g ±10% |
| Versions of the Series | MTN/1109C (Integral Cable), MTN/1109IC (ATEX/IECEx) |
| Frequency Response | 2 Hz to 8 kHz (±10%) |
| Mounted Resonance | 18 kHz (Nominal) |
| Temperature Range | -55 °C to +140 °C |
| Nutritional Requirements | -24V DC (Negative) |
| Bias Tension | -12V DC (Nominal) |
| Degree of Protection | IP67 |
| Housing Material | Stainless steel |
| Electrical Insulation | Insulated Base |
| Dynamic Range | ±80 g |
| Transversal Sensitivity | Less than 5% |
| Nominal Weight | 110 g |
| Mounting Torque | 8 Nm |
| Connection Type | 3 wires (ETFE Braid or 62GB Connector) |
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