... calibration methos,etc. Constant weight feeder technical specifications:DEL Constant weight feeder (light type)DEM constant weight feeder (Heavy type)Accuracy+/-0.5%, +/-1.0 ... ,16`160,22`220,30`300t/hConsumption frequency<2.2kw<4.0kwWorking powerWeighing integrator: 220+/-10%V AC 50+/-2%HzReducing ... speed, so as to achieve the purpose of quantitative feed. Feeder