Laboratory multi cell ageing oven with digital pid controller.
As per is: 10810 (pt-10 & 11)
Scope: Apparatus confined to age the thermoplastic polymers at specified temperature for specified duration.
Optional: Temperature can be recorded through data logger and can be printed through dot matrix printer at requisite intervals.
Significance: Thermoplastic and elastomeric insulation and sheath exposed to heat are subjected to many types of physical and chemical changes. The severity of exposures, in both time and temperature, determines the extent and type of change that takes place. The ageing makes an assessment of change in properties of materials on subjecting them to accelerated ageing in air. Such type of ageing does not predict the thermal ageing characteristics together with interaction of mechanical and electrical stresses, environmental ageing.
Apparatus Consists of following:A single unit comprises of four cell. Internal dimension of cell is 300 length x 100mm diameter. Cell fabricated in aluminum sheet with neck type heater. Temperature controlled by digital controller pid with rtd sensor with a hour meter. Toggle switches, line indicators, load indicators and air flow-meters for 8 to 20 changes of air, top lid with a provision of hanging more than 10 samples at one time and heat insulated handle. Assembled in mild steel cabinet painted with attractive powder coated paint, fine fiber glass wool is used as heat insulator between the cell and cabinet.