Critical Technical Advantages
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Optimized for Non-Hazardous Areas: By focusing on general-purpose industrial environments, the TM121 offers a streamlined design that provides high-quality measurement without the added cost of hazardous area certifications.
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Smart Connectivity via Bluetooth: The device can be equipped with an optional Bluetooth-enabled iTEMP head transmitter. This allows for wireless device setup, monitoring, and servicing through a smartphone or tablet, significantly simplifying maintenance in hard-to-reach locations.
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Enhanced Signal Integrity: By converting the sensor signal to 4 to 20 mA or HART communication at the head, the TM121 provides much higher measurement accuracy and reliability compared to traditional directly wired sensors, which are prone to electromagnetic interference.
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High Environmental Protection: With a degree of protection up to IP 68, the TM121 is built to withstand harsh outdoor conditions, moisture, and dust, ensuring a long service life for the internal electronics.
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Universal Installation Flexibility: Featuring a wide range of standard process connections and an adaptable extension neck, the TM121 can be easily integrated into various pipe sizes, tanks, and industrial machinery.
Technical Performance Matrix
| Feature | Details |
| Measuring Range | –50 to +650 °C (–58 to +1202 °F) |
| Max. Pressure | 50 bar (725 psi) |
| Protection Class | Up to IP 68 |
| Area Classification | Non-hazardous (General Purpose) |
| Sensor Type | RTD or Thermocouple (TC) |
| Communication | 4 to 20 mA, HART, Optional Bluetooth |
Primary Applications
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General Machine Building: A reliable, low-cost temperature solution for manufacturers of industrial pumps, gearboxes, and hydraulic systems.
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HVAC and Building Automation: Monitoring temperatures in large-scale heating and cooling circuits for commercial and industrial facilities.
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Utility Monitoring: Tracking the temperature of cooling water, lubrication oil, and low-pressure steam in secondary process loops.
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Energy Management: Providing accurate data for heat exchangers and boiler systems to improve operational efficiency in non-regulated areas.
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Water and Wastewater: Measuring process water temperatures where robust protection against environmental moisture (IP 68) is required.
