MHIS 2024- 25 Procurement of Meteorological Equipments- SRG FCS equipments in Manual gauging stations for replacing the obsolete equipments under Hydrology Sub Division, Kozhikode

Amount

Supplying of RAIN GAUGE - NON RECORDING

1.1 Conditions & Requirements • The rain gauge shall be of such a design that it operates reliably and accurately under the prevailing environmental and weather conditions. • The rain gauge shall be easy to operate and maintain. • The rain gauge shall be supplied with the accessories as needed for effective deployment. • All materials on the rain gauge shall be non-corrosive. • The locking ring shall be of rigid plastic • The rain gauge shall have smooth and permanent surface finish to minimise evaporation losses. • The minimum expected lifetime in open field shall be 15 years. • All openings of the rain gauge shall be covered with stainless steel net to protect against any insects entering inside. • The rain gauge shall comply with IS 5225-1992 1.2 Specifications i. 200 cm Model Collecting area 200 cm2 ID of rim 159.6 mm Collecting bottle 2 litres Nominal capacity 100 mm Rain measure for 10 mm rainfall, graduation etc. according to IS 5225-1992 ii. Materials Base and collector preferably FRP Rim of collector aluminium or gun metal iii. Accessories • collecting bottles of 4 litres for 200 cm2 collector

Supplying of SUNSHINE RECORDER

2.1 Conditions & Requirements • The sunshine recorder and cards shall comply with IS 7243-1974 2.2 Specifications Size base 200 mm, sphere radius 79.6 mm Base good quality marble or similar stone, black or white Sphere uniform and well annealed glass and having a focal length of 74.9 ± 0.25 mm Bowl tin bronze Pivot brass Sunshine Cards, made of white paste board Properties When dry After immersion inwater for 18 hours After drying Length down board 127 mm 127 mm not less than 125.7 mm Width across board 25.4 mm not more than 25.9 mm not less than 25.1 mm Thickness 0.43 to not more than 0.76 mm 0.48 mm

Supplying of COUNTER TYPE ANEMOMETER

3.1 Conditions & Requirements • The instrument shall be of such a design that it operates reliably and accurately under the prevailing environmental and weather conditions. • The instrument shall be easy to operate and maintain. • The instrument shall be supplied with the accessories as needed for effective deployment. • All materials on the instrument exterior shall be non-corrosive. • The instrument shall have an expected technical lifetime of not less than 10 years. • An operator’s manual, related to the type and model of the instrument, shall be part of the delivery. • A suitable non-reset direct-drive revolution counter adding one count for each one- tenth revolution of the drive shaft in one direction shall be used. • The ratio between gears shall be such that 1 count equals 100 m/s. • The anemometer shall comply to IS 5912-1970. 3.2 Specifications i. Sensing Range 50 m/s Accuracy up to 2.5 m/s, 0.25 m/s Above 2.5 m/s, 10% FS ii. Materials Cups copper or aluminium sheet 0.71 mm thickness Centre spindle stainless steel rod Worm on spindle manganese bronze alloy Worm wheel hard brass

Supplying of HYGROGRAPH, HAIR STRING TYPE

4.1 Conditions & Requirements • The general arrangement and main dimensions of the hair hygrograph and charts shall comply with IS 5900-1970. 4.2 Specifications Range 0 to 100% RH Accuracy above 20%: 5% RH Recording resolution ± 0.2% RH Housing material FRP or aluminium Recording mechanism drum, driven by clockwork

Supplying of THERMOGRAPH, BIMETALLIC TYPE

5.1 Conditions & Requirements • The general arrangement and main dimensions of the thermograph and charts shall comply with IS 5901-1970 5.2 Specifications Range -20 to 60 °C Accuracy 1 °C Recording resolution 0.2 °C Housing material FRP or aluminium Recording mechanism drum, driven by clockwork

Supplying of EVAPORIMETER, US CLASS A PAN

6.1 Conditions & Requirements • The pan shall comply with IS 5973 - 1998. • Civil works will be finalised in collaboration with the supplier. 6.2 Specifications i. Pan Size 1.22 x 0.255 m (diameter x height) Accuracy of reading 0.1 mm Pan evaporimeter copper sheet of thickness 1.0 ±0.1 mm point gauge and still well Brass ii. Measuring cylinder Material clean cast seamless acrylic plastic tubing or brass sheet Bottom plate acrylic plastic sheet Thermometer clamp brass Platform rot resistant timber treated with creosote or other effective wood preservative Inner diameter 122 mm Graduation in cm. Warranty: 3 year comprehensive for all equipments as detailed above

Hydro Flow Tech Engineers (BID ID -2079165)