Check the listing for details. Automatic Seeds Counter Adjustable speed LED Microcomputer Seed Counting Machine. Condition: New. Listed at 370.00 USD. Microcomputer Automatic Particle Counting Seeds Counter Adjustable speed LED Seeds Counting Machine with 220V Note: If you are the country for 220V Voltage , we will configure it for you . If you are the country for 110V Voltage ,we don't recommend you to buy it. Application: The microcomputer automatic particle-counting apparatus can automatically count the particles of various granular objects according to the set value of the user. It is mainly used for automatically counting the grain numbers of the cereal crops, such as rice, wheat, sorghum, corn, vegetable seeds, and other grains. The apparatus applies to the academy (institute) of agricultural sciences, agriculture universities & colleges, seed system, and food sector in studying seed index, measuring thousand seed weight, germination counting, and sowing counting, etc. The accurate automatic particle-counting reduces the working strength of the staff. It can not only be used for counting rice, wheat, rape, vegetables, flowers, and other seeds of medium and small grains, but also be used for counting corn, soybean, sunflower seeds, and other seeds of large grains. Working Principle The apparatus is controlled by microcomputer chip, with buttons to operate. The electromagnetic vibration box makes the seeds line up grain by grain for feeding, then the seeds fall into the photoelectric conversion groove, forming the photoelectric pulse; the photoelectric pulse is sent into the counting circuit after amplification, shaping, and phase inversion, and then the count value is displayed on LED nixie tube. (1) Electromagnetic vibration feeding device: The seeds are laid on the feed tray, and the feed groove is spiral. (2) The seeds which are raised in the spiral groove drop down when reaching the material falling port and then are projected on the silicon photocell through the photoelectric conversion zone, bringing out the change of electric current; the photoelectric counting pulse is gained after pulse amplification and shaping, and then the photoelectric counting pulse is sent into the counting display circuit controlled by microcomputer. (3) The counting display circuit, generally controlled by microcomputer chip, adopts the mode of time-sharing scanning. 1.Technical Index: 1. Range of particle counting: medium and small sample particles: 0.7~4 mm×0.7~12 mm Large sample particles: 3~10×3~12 mm 2. Counting precision: Medium and large particles: 2/1000 (depend on the speed) Small particles: 4/1000 (depend on the speed) 3. Counting speed: ≥1000 particles/3min (Such parameter is calculated with slower speed of II gear shift as the standard. The speed can be adjusted to III to VII gear shift if a faster speed is required.) 4. Counting capacity: 1~9999, can be read directly from five-digit LED nixie tube 5. Preset automatic stop: any numerical value among 1~99999, do not count when preset at 00000 6. Dimension of apparatus: 195×245×155 mm 7. External power supply: 220~±20V~50HZ 8. Power: less than 20W, with good earthing performance 9. Continuous working hours: ≥5 hours 10. Working environment: atmospheric pressure: 750±30 mmHg ambient temperature: 0℃~40℃ relative humidity: lower than 80% when the ambient temperature is 20℃ 2. Packing List Name Quantity Main machine 1 set Sample disc Power line 1 piece Fastening knob 1 piece 12V/0.04A Small bulb 1 piece Operations Manual 1 copy Warranty Card and Certificate of Conformity 1 copy