MTN/1120 Compact Industrial Accelerometer
- Manufacturer: Monitran
- Category: Accelerometers and Vibration Sensors, Amplified, SENSORS
The MTN/1120 industrial accelerometer is an IEPE (Integrated Electronics Piezo-Electric) type piezoelectric transducer characterized by its miniaturized design and low mass (45 grams). This reduction in size compared to standard models allows for installation on assets with severe space constraints and minimizes the mass loading effect on lightweight structures, ensuring vibration data capture that more accurately reflects the machine's actual dynamics.
Technically, the sensor provides a nominal voltage output of 100 mV/g with a linear frequency response from 2 Hz to 10 kHz (±5%). Its internal architecture is protected by a sealed stainless steel housing rated IP67, allowing continuous operation in environments with oil, humidity, and industrial dust. Unlike the 1100 series, the MTN/1120 uses a 3-pin 62GB industrial connector, ensuring a highly reliable mechanical connection even under high-amplitude vibrations.
The device operates on a constant current supply of between 0.5 and 8 mA, making it compatible with standard industrial instrumentation and portable data collectors. Its top-entry design optimizes cable routing in vertical installations, while its non-insulated base (standard option) ensures direct mechanical transfer, although it requires attention to ground loops in the plant's electrical installation.
- Reduced mass of 45g to avoid the influence of the sensor on the measurement.
- Compact dimensions (35mm height) for mounting in confined spaces.
- IEPE output of 100mV/g compatible with industrial protection systems.
- IP67 sealing and stainless steel housing for maximum environmental durability.
Technical Frequently Asked Questions
1. Why use a lightweight sensor like the MTN/1120 instead of the 1100?
The use of low-mass sensors is critical in small mechanical components or thin structures. A heavy sensor can alter the natural resonant frequency of the part being measured (mass effect), skewing the results. The MTN/1120 mitigates this risk with its weight of only 45 grams.
2. What type of wiring does the 62GB 3-pin connector use?
The 3-pin connector uses pins A and B for the signal and common return (0V), while pin C is typically left unconnected or used for shielding in specific configurations. It requires an MTN/MH008 female connector to ensure a watertight connection.
3. Is this model available with a side outlet?
Yes, the series includes the MTN/1120SC (Side Entry) variant for applications where the available height above the machine is extremely limited and the cable must exit perpendicular to the sensor mounting axis.
Properties
| Feature | Technical Specification |
| Technology | IEPE (Constant Current) |
| Construction Configuration | Top Entry (Compact) |
| Nominal Sensitivity | 100 mV/g ±10% (@ 80Hz) |
| Frequency Response | 2 Hz to 10 kHz (±5%) / 0.8 Hz to 15 kHz (-3dB) |
| Dynamic Range | ±80 g |
| Sensor Mass | 45 grams (Nominal) |
| Physical Dimensions | 35mm (Height) x 19mm (Diameter) |
| Operating Temperature | -55 °C to +140 °C |
| Degree of Protection | IP67 |
| Mounted Resonance | 20 kHz (Nominal) |
| Output Connector | 3-pin 62GB |
| DC Polarization Voltage | 12 V DC (Nominal) |
| Mounting Options | M6, M8, 1/4″ UNF or Quick-Fit Female |
| Body Material | Stainless Steel |
| Electrical Insulation | Non-insulated base (Insulation available as an option) |
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