Critical Technical Advantages
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Automated Inline Self-Calibration: The TM371 performs a calibration check every time the process temperature crosses the Curie point of its internal reference material (typically during SIP or high-temperature cleaning). This process is fully autonomous and requires no manual intervention, providing a traceable “Pass/Fail” result for every event.
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The Curie Effect Reference: The device contains a built-in, long-term stable reference based on a physical constant (the Curie temperature). This provides a fixed point traceable to the International Temperature Scale of 1990 (ITS-90), ensuring the highest level of measurement integrity.
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Heartbeat Technology: Beyond self-calibration, Heartbeat Technology provides continuous self-diagnostics and verification of the entire instrument’s health. It identifies issues before they lead to failure, supporting predictive maintenance strategies.
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Audit-Proof Documentation: The transmitter features an internal memory capable of storing up to 350 calibration events. These records can be retrieved at any time to generate printable, audit-proof calibration certificates, either locally or through Netilion cloud-based systems.
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Individual Transmitter-Sensor Matching: From the factory, each TM371 undergoes a matching process where the transmitter is tuned to the specific linearization curve of its RTD element. This eliminates the standard interchangeability error, resulting in superior measurement precision.
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Seamless Digital Integration: The TM371 supports 4 to 20 mA and HART communication as standard. With the addition of a FieldPort SWA50, it can also provide secure Bluetooth and WirelessHART connectivity for remote monitoring in complex plant environments
Technical Performance Matrix
| Feature | Details |
| Measuring Range | -40 to 190 °C (-40 to 374 °F) |
| Calibration Point | Fixed reference based on Curie temperature |
| Accuracy | Elite precision via sensor-transmitter matching |
| Output | 4 to 20 mA, HART (Optional WirelessHART/Bluetooth) |
| Memory | Internal storage for 350 calibration events |
| Protection Class | IP65/67 or IP69 (Washdown resistant) |
| Hygienic Approvals | EHEDG, 3-A, ASME BPE, FDA, EC 1935/2004 |
Primary Applications
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Life Sciences (Pharma/Biotech): Monitoring critical fermentation and sterilization processes where undetected sensor drift could lead to a total loss of a high-value batch.
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Dairy and Beverage: Ideal for UHT (Ultra-High Temperature) treatment and pasteurization loops where food safety depends on absolute temperature accuracy.
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Industrial Frying and Oil Refining: Ensuring consistent quality in edible oil processing through continuous verification of the temperature measuring point.
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Sterile Process Skids: Providing skid builders with a “self-verifying” component that meets global regulatory requirements for automated process documentation.
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Digital Transformation (Industry 4.0): Integrating with the Netilion ecosystem to provide 24/7 transparency of calibration status across an entire facility.
