TR15

Thermocouples feature simple construction and rugged durability. Thermocouple sensors measure temperature based on the Seebeck effect. Two dissimilar conductors are connected to form a closed loop. A tiny voltage difference is generated in the loop when temperatures differ at the two junctions. This voltage difference is known as thermovoltage or thermoelectromotive force. Its magnitude depends on the materials of the two conductors and the temperature difference between the "measuring junction" (the joint of the two conductors) and the "cold junction" (open‑circuit ends of the conductors). Accordingly, thermocouples are generally used only for differential temperature measurement. The absolute temperature at the measuring junction can be determined if the cold‑junction temperature is known, or measured separately and compensated. Standards IEC 60584 and ASTM E230/ANSI MC96.1 list common thermocouple conductor material combinations and their corresponding thermovoltage‑temperature characteristics.

Standard Application

This purpose‑built, durable thermometer is suited for harsh gas or steam‑related applications in chemical, oil & gas, energy and other industries. Its rugged thermowell and special process connections withstand high pressure and high temperature. Units fitted with optional head‑mounted transmitters support all common communication protocols for plug‑and‑play operation. Compared with directly wired sensors, they deliver improved measurement accuracy and reliability.