Abstract:

In view of the importance of controlling the temperature and humidity of steam in the steaming process and the temperature and humidity measuring problem of the steam due to overheating, We have developed an electronic equipment which can be mounted in steamers to display the temperature and relative humidity of the steam. The equipment consists of the high-precision temperature and humidity sensor SHT75 presented by Swiss Sensirion Company, the micro-controller PIC16F628 made by Microchip Technology Incorporation, an unique protection probe and TELFON shielded cables and electronic circuit with high temperature resistance, along with ingenious design of programming in assembly language. The device can be applied in adverse environmental conditions, automatically prevent steam from condensing, and display the high temperature and high relative humidity of the steam accurately.