Critical Technical Advantages
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Ultra-Compact Stainless Steel Design: The entire device is housed in a sleek, robust stainless steel enclosure. Its small footprint allows for easy integration into tight spaces where standard industrial thermometers would be too large to install.
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Vibration-Proof Thin-Film Technology: The internal Pt100 sensor uses thin-film technology, which is inherently resistant to high levels of mechanical vibration. This ensures long-term stability and prevents sensor failure in high-turbulence or high-vibration machinery.
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Integrated PC-Programmable Transmitter: Beyond the standard 4-wire Pt100 output, the TMR31 is available with a built-in transmitter. This converts the temperature signal into a 4 to 20 mA output, which can be easily configured using the free ReadWin 2000 software.
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Short Immersion Precision: Many sensors lose accuracy if they are not deeply immersed in the fluid. The TMR31 is specifically engineered to maintain high accuracy even with very short insertion lengths, making it ideal for small-diameter pipes.
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Safety and Diagnostics: In the event of a sensor break or short-circuit, the TMR31 can provide clear breakdown information. These error signals are adjustable according to NAMUR NE43 standards, ensuring your control system can react safely to hardware faults.
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Marine Certified: With official marine approval, this compact sensor is qualified for the demanding conditions of shipboard machinery, engine monitoring, and offshore equipment.
Technical Performance Matrix
| Feature | Details |
| Measuring Range | –50 to +150 °C (up to +200 °C with neck) |
| Output | 4-wire Pt100 or 4 to 20 mA (programmable) |
| Housing Material | Stainless Steel 316L |
| Diagnostics | Adjustable per NAMUR NE43 |
| Response Time | Extremely short ($t_{50}$ < 1 s in water) |
| Software | ReadWin 2000 (Free of charge) |
| Approvals | Marine (DNV/GL etc.), General Purpose |
Primary Applications
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OEM Machinery: A standard choice for builders of pumps, compressors, and hydraulic power units where temperature monitoring is required in a small area.
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Process Skids: Ideal for modular skid units in the water treatment, chemical, or cooling industries where piping is densely packed.
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Small-Diameter Pipes: Reliable measurement in DN15 to DN50 pipes without causing significant flow obstruction.
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Marine Engineering: Monitoring cooling water, lubricant oil, and fuel temperatures on ships and offshore platforms.
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Laboratory Equipment: Providing a professional-grade industrial sensor for benchtop cooling or heating apparatus.
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Tank Monitoring: Compact top-mounting on small buffer tanks or storage vessels.
