Copper Sheet Of Thickness 1.0 +-0.1 Mm Point Gauge And Stilling Well Made From Brass
Open Pan Evaporimeter is used for Estimation of evapccation from the surface.
The Open Pan Evaporimeter consists of a cylindrical reservoir made of Copper sheet of fixed diameter and depth, filled with water to a few centimeters below rim. A fixed Point gauge in a stilling well serves to indicate the level of water in the pan. A calibrated measuring cylinder is used to add or remove water at each observation to bong the water level to the fixed point. The cross-sectional area of the measuring cylinder is such that, the number of millimeters of water added front the measuring cylinder divided by 100 gives the amount of water is millimeters which has evaporated from the pan during the given interval of time. The reservoir is covered with wire-mesh netting to protect the pan from birds and animals. A thermometer suspended from a mounted clamp to the side of the reservoir, records the temperature of the water in the part Platform is made torn wood.