Self-powered temperature transmitter

Wireless instruments offer a solution where it is costly or impractical to run cabling. Battery-powered WirelessHART technology allows quick and simple instrument installation, allowing operators to monitor new process information to improve plant visibility.

Featuring a built-in thermoelectric generator (TEG), the device uses the Seebeck Effect to harvest electrical energy from thermal energy. The temperature difference between the ambient and the pipe temperature produces a voltage difference, which is then used to power the device. This technology enables the transmitter to be fitted onto a steam or process pipe, with the latent heat being used to provide the power needed for operation. This eliminates the need to change a battery.