Design of electromechanical hair hygrograph system

The hair hygrograph is an instrument used for measuring and recording relative humidity continuously of the atmosphere using chart recorder mechanism. However, the major drawbacks of these chart recorders are changing chart papers daily, regularly filling ink into the pointer to avoid loss of data and clocking the drum daily at a fixed time. Further, tabulation sheet from these charts needs to be prepared manually on daily basis. Thus, to overcome these drawbacks, we have proposed an Electromechanical Hair Hygrograph System (EMHH). EMHH overcomes drawbacks of conventional observatory system (hair hygrograph). EMHH can be used for continuous measurement of meteorological parameter (humidity) in numerical and graphical format. Due to this, EMHH gives better accuracy, precision and operates at low power with better performance. EMHH can further extended for data storage and its retrieval for future requirements.