tender for purchase of lab equipments for renewable energy dept , purchase of lab equipments for renewable energy dept , rc phase shift oscillator itemcode:o001 specifications  oscillator type: rc phase shift oscillator using transistor / op-amp configuration.  input supply: 230 v / 50 hz ac with regulated internal dc supply.  output frequency range: 100 hz - 10 khz adjustable.  output: sinusoidal waveform with adjustable amplitude up to 10 vpp.  rc network: three-stage rc phase shift network with frequency control arrangement.  cro test points: dedicated cro terminals at amplifier output, each rc stage, and final output for waveform and phase-shift observation.  protection: over-voltage and short-circuit protection provided.  indicators and controls: power on led indication with frequency and gain adjustment controls.  accessories: patch cords, circuit diagram . , calorimeter itemcode:o014 specifications: • vessel material: copper / aluminum calorimeter vessel. • capacity: 250 ml / 500 ml minimum. • insulation: double-walled insulated outer container. • stirrer: non-corrosive stirrer provided. • thermometer provision: suitable slot for thermometer/temperature sensor. • lid arrangement: insulated lid with openings for stirrer and thermometer. • temperature range: ambient to 100°c. • least count compatibility: suitable for 0.1°c thermometer. • heating arrangement: compatible with external heater / immersion heater. • mounting: table-top laboratory model. • accessories: stirrer, lid, thermometer, measuring cup, and connecting accessories. , solar water heater performance test setup itemcode:o016 specifications: • collector type: flat plate collector / evacuated tube collector. • collector area: 1 m² to 2 m² minimum. • storage tank capacity: 50 litres to 100 litres. • tank material: stainless steel insulated storage tank. • absorber material: copper/aluminum absorber plate with selective coating. • glazing material: toughened glass cover. • insulation: mineral wool / puf insulation provided. • circulation type: natural circulation / forced circulation system. • temperature measurement: digital temperature indicators at inlet and outlet. • flow measurement: rotameter / flow meter provided. • pressure measurement: bourdon pressure gauge provided. • heating backup: electrical heater backup provision. • mounting frame: corrosion-resistant inclined mounting structure. • data acquisition: provision for performance analysis and efficiency calculation. • power supply: 230 v ac for instrumentation and heater backup. • accessories: connecting pipes, valves, sensors, control panel and experiment manual.