Design of Low Cost Industrial Temperature Transmitter

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Parmar Divyang, Prof. Viral Mehta


In today’s industrial scenario, the temperature transmitters are one of the most widely used field devices, with innumerable functionalities and features. According to a market research study, majority of the industries use temperature transmitters to monitor and control their processes. These temperature transmitters are costing very high in the market. Even the maintenance of these transmitters is costly. Keeping in view of the above aspect, this project is aiming to design a low cost temperature transmitter. The project proposes to use inbuilt 10 bit ADC and convert it to 16 bit ADC using oversampling method. Temperature transmitter's role is to isolate the temperature signal, filter any Electro- magnetic noise, amplify and convert to 16-bit resolution of input process value.The retransmission part will consist of voltage to current conversion integrated circuit to produce 4 to 20mA current. It is required to take care of the non-linearity of some of the sensors by using Transmitter that can linearize the electrical signal, process and re-transmit them in form of a desired electrical signal which is generally industrial standard 4-20 mA. A low cost Programmable Universal Temperature Transmitter will be designed for temperature sensors like RTD and Thermocouples. Design and simulation of a closed loop control system for 4 to 20mA current loop will be carried out. It is proposed to use analog components for signal conditioning and Renesas make Microcontroller for further computations. In the last a Modbus Communication protocol will be introduced for communication between Field device and PC.

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How to Cite
, P. D. P. V. M. “Design of Low Cost Industrial Temperature Transmitter”. International Journal on Recent and Innovation Trends in Computing and Communication, vol. 6, no. 4, Apr. 2018, pp. 98-101, doi:10.17762/ijritcc.v6i4.1525.