Coated Copper Open Pan Evaporimeters, For Laboratory, Feature : Durable, Easy To Use, Quality Tested

Open Pan Evaporimeter is used to calculate the evaporation loss of water in the atmosphere. It consists of Copper / Galvanize Pan, Wire Mesh, Fixed Point gauge, Measuring Cylinder, Thermometer & Wooden Platform.  The Pan Evaporimeter consists of a cylindrical reservoir of Fixed diameter & depth is filled with water to a few centimeters below the 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 bring 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 from the measuring cylinder divided by 100 gives the amount of water in millimeters which has evaporated from the pan during a given interval of time. The reservoir is covered with wire-mesh netting to protect the pan from birds & animals. A thermometer records the temperature of the water in the pan
Material

• The Pan Evaporimeter : The Pan Evaporimeter is made from Copper / Galvanize sheet (G.I.). The Dimension of pan should be 1220 mm + 3mm. The base of Pan is made from single piece of copper/ G.I. Sheet. The outer surface of pan is painted with three coats of chlorinated rubber paint and the inner surface tinned or painted uniformly.
• The Fixed Point Gauge : The Fixed - point gauge is made from brass rod of 10mm diameter. The stilling well is made from brass tube of 102 mm outside dia with a wall thickness of 3.0 + 0.5 mm & the base of made from cast brass.
• The Measuring Cylinder : The Measuring Cylinder is made from clear cast seamless acrylic plastic tubing & the bottom plate of clear acrylic Plastic Sheet. The dimension of the measuring cylinder made from acrylic plastic should be 122+ 0.3mm
• Wire Mesh  : The Cover shall consists of a circular M.S. bar frame with cross pieces of bar. This frame is covered with G.I. wire netting. The Cover should properly fit on the outer rim of the pan.
• Thermometer : Thermometer of glass in liquid filled type with range 0 to 50^oc is supplied with pan
• Wooden Platform : Well seasoned wood/deodhar wooden planks are used for making platform. The size of platform should be 1225 x 1225 x 100 mm. The frame of platform is made from 11 nos. of wooden planks.

Specifications :

• Material
  
  • Pan evaporimeter - Copper sheet of thickness 1.0 ±0.1 mm.
  • Fixed point gauge and still well - Brass
  • Measuring cylinder - Clean cast seamless acrylic plastic tubing or brass sheet
  • Bottom plate - Acrylic plastic sheet
  • Thermometer clamp - Brass
  • Platform - Rot resistant lumber treated with creosote or other effective wood preservative

Dimensions : The dimensions of the pan evaporimeter shall be as given in figs. 8.1, 8.2, 8.3 and 8.4