Critical Technical Advantages
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Dual-Channel Versatility: The TMT82 can process two independent sensor inputs simultaneously. This allows for differential temperature measurement, average measurement, or—most importantly—sensor redundancy. If one sensor fails, the transmitter can automatically switch to the second sensor, preventing process downtime.
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Advanced Sensor Monitoring: The device features built-in smart monitoring that detects sensor drift and hardware failures. By providing diagnostic information according to NAMUR NE 107 (Standardized status signals like “Maintenance Required” or “Out of Specification”), it enables proactive maintenance before a failure occurs.
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High Safety Standards (SIL 2/3): Certified to SIL 2 (Systematic Capability SC3) according to IEC 61508, the TMT82 is engineered for use in safety-instrumented systems. It ensures that temperature data is reliable and that any internal faults are detected and reported immediately.
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Precise Sensor-Transmitter Matching: By entering the specific Callendar-Van Dusen constants of an RTD sensor into the TMT82, the system eliminates the interchangeability error of the sensor. This results in the highest possible measurement accuracy for the entire measuring point.
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Flexible Installation Options: The TMT82 is available in several formats to suit your plant’s architecture:
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Head Mount: Fits into a standard DIN Form B terminal head.
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DIN Rail: A slim 17.5 mm width version for cabinet mounting.
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Field Housing: Robust housing with separate terminal compartments for harsh environments, optionally equipped with the TID10 digital display.
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Tool-Free Push-In Terminals: The transmitter utilizes modern push-in terminal technology, allowing for fast, secure, and vibration-resistant wiring without the need for specialized tools.
Technical Performance Matrix
| Feature | Details |
| Input | 2 x Universal (RTD, TC, Ω, mV) |
| Output | 4 to 20 mA, HART 7 |
| Accuracy (RTD) | Typically 0.1 K |
| Safety Rating | SIL 2 / SC3 (IEC 61508) |
| Diagnostics | NAMUR NE 107 compliant |
| Galvanic Isolation | 2 kV (Input to Output) |
| Mounting | Head mount (Form B), DIN rail, Field housing |
Primary Applications
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Critical Process Monitoring: Applications in the chemical and oil & gas industries where a temperature excursion could lead to safety risks or product loss.
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Sensor Backup/Redundancy: Using two sensors in one thermowell to ensure continuous measurement in high-vibration or high-wear environments.
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Marine and Offshore: Monitoring engine temperatures or cargo conditions on ships, supported by DNV GL marine approvals.
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Hazardous Area Installations: Safe operation in explosive atmospheres with comprehensive global approvals (ATEX, IECEx, FM, CSA).
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High-Precision Temperature Loops: Utilizing sensor-transmitter matching for calibration-critical applications in the pharmaceutical or food industries.
