mechanical lab items mechanical lab items , mechanical lab items , hot air oven inner working size : 45 x 45 x 45 cm ( h x w x d ) chamber volume : 91 liter. no. of trays: 2 no. ( additional shelf at extra cost ) rating : 1.5 kw outer chamber : crc powder coated inner chamber : made of stainless steel s.s. 304 - mirror polished material. temperature range : 50°c to 250°c controlling system : microprocessor based auto tune - pid controller control: ± 1°c or better power consumption : 220 / 230 volt, 50 hz, single phase, ac supply , muffle furnace inner working size : 12 x 6 x 6 ( 300 mm d x 150 mm w x 150 mm h ) •outer size: 24 x 20 x 25 ( 600 mm d x 500 mm w x 625 mm h ) •construction: exterior body made of mild steel material, which is powder coated in attractive shades insulation: ceramic fiber wool insulation chamber volume: 7 liter rating : 3.0 kw working temperature : 1150°c maximum temperature : 1200°c temperature control : dual display microprocessor based digital temperature indicator cum controller temperature sensor : k - type sensor temperature accuracy : ± 5 °c temperature resolution : 0.1 °c heating : kanthal a 1 wire in coil form placed in theelements ribs & easily replaceable circuit wiring: as per ce norms operation on: 220 / 230 volts, single phase, ac supply , shore c durometer rubber hardness tester meter measuring range ( max ) : 100 precision ( of max ) : 3% readout : 1 weighing units: shore “c” maximum operating temperature : 40°c minimum ambient temperature : 0°c , visual ir thermometer product : visual ir thermometer temperature range ( °c ) : - 10°c to +250°c accuracy : ±2°c focus mechanism : focus free => limited