press nit no.43, item no.04 (2022-23)cwa (w and s)-i purchase of automatic composite sampler for cwa(w and s)-i division , automatic composite sampling unit of following specification : the composite sampler will be compact and designed for composite sample collection automatically at given time intervals for a given period from water or waste water and to store the samples at 40+10 c in a non-reactive vessel. the inner sample collection vessel will be portable and removable. it will be designed for comfortable transportation. the composite unit must have facility to automatically discard of the remaining sample in the hose collection system. back to the sample collection site.it will be iot based with touch screen panel and software for various functions operated through bluetooth. the operation of touch screen panel will be password protected.the whole system will be rugged and weather resistant. it will be coated with chemicals to retard the corrosion in the body or the cooling system. technical specifications: sample collection unit: - mos outer body: ms powder coated, mos inner body: ss 304, insulation: puf insulated, transmitter: ble (bluetooth), receiver: esp 32, power input: 230 v -1 ph- 50hz, pump: 1 hp, minimum pump discharge: 500ml/min , head: 8-32 m , priming: self, level sensor: 5v-proximity (i.r), screen: minimum 2.8” tft touch/ operation password protected , ux: android- timer input – volume input, portable mesh , inner size: - 90 to 110 litre, refrigeration with eco-friendly r 134, duty cycle: - continuous, power consumption: 220/230vac+/-10% hz, single phase, digital display/ controller, all components exposed to sample or sample collection must be chemically inert. ,castor wheels