The TTD-Head series is a temperature transmitter that has been compensated by using computerized laser resistor trimming, complete with an integrated wiring box design. The TTD-Head can use PT100 as the sensing component. With special terminal and digital display, installation, calibration, and repair are convenient. This series is suitable for petroleum, chemical, metallurgy, electric power, water conservancy, scientific research, environmental protection, and other various enterprises and institutions application. The TTD-Head series can be used to realize the measurement of fluid temperature and is suitable for various occasions all-weather environment and all kinds of corrosive fluid.