evaporation. A large number of different designs, sizes and methods of installations are used throughout the world. The most commonly used Evaporationpan Types are - Class A Pan Round evaporation pan made of stainless steel or galvanised iron sheets. Diameter 120.6 cm, Height cm. Installation Horizontally on a wooden gate above the ground appro*. 13 cm height. - Colorado Sunken Pan Square evaporation pan size 92 x 92 cm 46 cm deep, Installation buried to the level of the ground. In most cases, evaporation pans have to be protected against animals by wire grids. As the grids modify the windfield around the instrument, it becomes necessary to apply correction coefficients to the measurements. The water level is controlled with a graduated hook gauge set on a still well, or with a fixed point, to which the pan is
