Temperature Transmitters

Temperature Transmitters

Temperature transmitters convert the raw input signal from temperature sensors (RTDs and thermocouples) into a stable, standardized output signal suitable for control and monitoring systems. Modern digital transmitters extend this role with intelligent functions, flexibility, and high measurement accuracy, positioning the transmitter as a crucial component that can improve safety and efficiency across the measurement chain.

A broad portfolio approach supports consistent transmitter selection across many measurement point types. Offerings are described as spanning multiple models, housings, approvals, and communication standards, including options for hazardous areas. Three common housing formats are highlighted: DIN‑rail devices for panel installation, head transmitters for direct installation in thermometer heads, and field transmitters for direct connection in the process area.

Communication strategy is central to transmitter value. While analog 4–20 mA remains common, digital technologies are emphasized for improved accuracy and flexibility; HART overlays digital communication on the analog signal, while PROFIBUS/PROFINET and FOUNDATION Fieldbus support fully digital transfer of measured values and additional information. Portfolio notes also reference seamless integration via common protocols, secure Bluetooth options for remote parametrization, and digitization paths such as Ethernet‑APL and IO‑Link.

Benefits typically include improved signal robustness (standardization close to the sensor), better diagnostics and configuration management, and reduced commissioning friction through consistent tools and parameter access. Wireless Bluetooth parametrization is cited as an example of field-friendly setup capability, enabling efficient configuration without opening enclosures repeatedly or connecting through temporary wiring.

Typical applications range from classic analog loops to high-density digital architectures and modernization programs. They are applied wherever RTDs/TCs must be integrated into DCS/PLC systems, where hazardous-area approvals are required, where higher accuracy and device diagnostics are desired, and where digitalization initiatives (HART multiplexing, fieldbus, Ethernet‑APL, IO‑Link) are used to increase transparency and lifecycle efficiency.

Field Instruments & Controls, Inc. an exclusive authorized representative of sales and service for Endress+Hauser.