Description

This is a reference design for a robust: low power: precise and long-term stable 2-wire loop powered 4 to 20mA current output temperature transmitter. It uses RTD temperature sensor with 4 to 20mA current loop transmitter. It also explains sensor signal conditioning: ratiometric measurement technique: recommended software flow: calibration: sensor linearization: PCB layout and other practical design considerations. Furthermore: external protection circuitry is deployed in-place for compliance with regulatory IEC61000-4 standards – EFT: ESD and Surge requirements. EMC compliance to IEC61000-4 is necessary to ensure that the design not only survives but also performs as intended in the harsh/noisy industrial environment. All the relevant design files like Schematics: BOM: Layer plots: Altium files: Gerber and MSP430 MCU software have also been provided to the users.