4-20mA Speed Transducer MTN/1185
- Manufacturer: Monitran
- Category: Accelerometers and Vibration Sensors, SENSORS
Continuous monitoring of vibration severity in rotating machinery requires flexible solutions that adapt to both the control infrastructure and the physical constraints of the installation. The MTN/1185 transducer is not a single sensor, but a high-performance modular series that converts vibration directly into a 4-20mA current loop proportional to the RMS speed. This versatility allows for the integration of critical asset monitoring directly into PLCs or SCADA systems without the need for external conditioners.
The MTN/1185 series stands out for its high degree of customization. Depending on maintenance needs, the device can be configured with various speed ranges (from 0-10 mm/s to 0-100 mm/s) and different physical output types, either through industrial connectors for easy replacement or through sealed integral cables for high-humidity environments. Its piezoelectric electronics ensure a linear response from 2 Hz, enabling continuous monitoring of industrial fans, pumps, and compressors.
Manufactured entirely from stainless steel with an IP67 hermetic seal, this transducer is designed to operate in demanding plant conditions. The inclusion of a galvanically isolated base is essential to protect signal integrity against 50/60 Hz electrical interference, common in cabinets with variable frequency drives. It is the benchmark tool for implementing condition-based preventive maintenance, providing RMS speed data compliant with international severity standards.
- 4-20mA Industrial Output for direct integration without additional modules.
- Configurable series: Selection of speed ranges and connection types.
- RMS Speed Measurement for an immediate assessment of the asset's condition.
- Isolated base and IP67 protection for maximum reliability in harsh environments.
Technical Frequently Asked Questions
1. What sub-models does the MTN/1185 series include?
The series offers three main connection options: the standard MTN/1185 model with a top connector, the MTN/1185C with a factory-sealed integral cable (ideal for maximum water resistance), and the MTN/1185Q with a quick-disconnect Quick-Fit connector. All share the same 4-20mA electronics.
2. Is it possible to change the speed range after purchase?
No, the speed range (e.g., 0-20 mm/s) is set internally in the electronics during the manufacturing process to ensure maximum accuracy and linearity. Therefore, it is critical to select the appropriate range based on the machine's criticality and nominal vibration level when ordering.
3. What happens if the current loop is broken?
Since it is a 4-20mA system, the PLC will detect a drop to 0mA as a loop error or cable break (an "Open Loop" signal), allowing it to instantly differentiate between a stopped machine (4mA), a vibrating machine (4-20mA) and a failure in the measurement system (0mA).
Properties
| Feature | Technical Specification |
| Device Type | Configurable RMS Velocity Transducer |
| Sub-models of the Series | MTN/1185 (Connector), MTN/1185C (Cable), MTN/1185Q (Quick-Fit) |
| Speed Ranges | 0-10, 0-20, 0-25, 0-50 or 0-100 mm/s RMS |
| Exit Signal | 4-20 mA DC (2-wire loop) |
| Frequency Response | 2 Hz to 1 kHz (±10%) |
| Supply Voltage | 12V to 32V DC (Loop powered) |
| Operating Temperature | -25 °C to +90 °C |
| Degree of Protection | IP67 (Industrial Sealing) |
| Housing Material | Stainless steel |
| Electrical Insulation | Galvanically Isolated Base |
| Mounted Resonance | 5 kHz (Nominal value) |
| Technical Linearity | Lower than 1% (FS) |
| Transversal Sensitivity | Less than 5% |
| Mounting Torque | 8 Nm |
| Connection Options | Top Entry or Side Entry (SCE) |
Other products
