Instruments for Measurement of Process Parameters

We have already learnt in earlier units the concept, principles and construction of various milk processing equipments. We have also studied the working of steam boilers, generation and utilization of steam in a milk processing plant. During the operation of these equipment and machinery the plant operator has to keep a constant watch on various machine parameters and process variables, such as, temperature, pressure, flow, etc. For indicating these variables and parameters several devices and instruments are installed on the equipment. The satisfactory operation of the equipment depends upon the reliability of these instruments. It is thus of importance to understand the working of the devices used to measure the important process variables.Now we shall develop the understanding of basic concept of some important process variables. This will be followed by the description of measurement instruments for these variables, which are commonly used in a milk processing plant.