PR electronics 5331D Temperature Transmitter

The device shown is a temperature transmitter manufactured by PR electronics, a leading Danish company specializing in industrial signal conditioning. This specific model is designed for head mounting within a DIN form B sensor head and is used to convert temperature sensor signals (like Pt100 or thermocouples) into a standard 4-20 mA output for process control systems.

Founded in 1974, PR electronics has maintained its core operations in Rønde, Denmark, where it conducts all research, development, and high-precision manufacturing. The brand is recognized globally for its 'head-mounted' transmitters, particularly the 5300 series, which are staple components in industries ranging from chemical processing to renewable energy. The brand remains privately held by the company founded by Peter Rasmussen.