Construction Of Iron-Constant An Thermocouple From Locally Available Haw Materials

INTRODUCTION Measurement of mechanical. thermal, electrical, and chemical quantities are made by devices called sensors and transducers. The sensor is responsive to changes in the quantity to be measured e..g. temperature, position, systolic bold pressure or chemical t concentration. The transducer converts such measurement into electrical signals. which usually simplified can be fed into instruments for the readout, recording or control of the measured quantities. Sensors and transducers can operate at locations remote from the observer and in environment unsuitable or impractical for humans.lt has been stated that by virtue of thermocouple operation of traducing thermal energy into electrical, it is used widely in temperature measurement and control [Baker et a!., f953] Knowledge of operating temperature is so essential in industries and small scale laboratories.