Product introduction Working theory: The seeds are arrayed and sent through electromagnetic vibrating box, then it drops into photoelectronic converter and photoelectronic pulse is formed. Later it is sent into counting circuit and LED digit tube display the value. Pre-set please use disc switch. When the counting number reaches the pre-set value, the instrument will stop feeding and counting. Self-adjusted frequency is set for checking the accuracy of circuit and pre-setting. Product index PME Mode 1 dimension: length width less than **4mm small granule (2) dimension: length width less than ***0mm (large granule) PME*1 Mode dimension: length width less than **4mm small granule Accuracy 4/***0 according to the speed (standard deviation) Speed: for small granule ***0/3min; large granule **0/3min Volume: 1�***9 read by Four LED digital tube directly Frequency: f=1~2HZ f=*0~*0HZ Pre-set self-stop: 1�***9, won�t count ***0 Power: **0~*0V~*0HZ, capacity less than *0W Working environment: atmospheric pressure: ****0mm Hg columniation Environment temperature: 0 ~*0 Relative humidity: *0� less then *0% Continuous working time: more than 4 hours Function: adjust automatically, count at any point, pre-set stop, self-lock