300 Dohi Speed ??Tester

Dohi speed measuring device (agricultural services - Fertilization meter) Series: Yu Agricultural Model:? 300 Features: ★ exclusive "Chassis / Pharmacy integrated aluminum chassis" design patent, portable, durable, complete detection method and finished pharmaceutical. ★ microcomputer control, digital circuit, program design, LCD, AC and DC, mobile field test, to minimize operator error and labor intensity. ★ Resolution: 0.001, touch buttons, built-in high-grade thermal printer can print the test results. ★ can detect soil and fertilizers, organic manure (including fertilizer, water soluble fertilizer, spraying fertilizer, etc.), the plant available nitrogen, available phosphorus, available potassium, total nitrogen, total phosphorus, total potassium, organic matter, pH, calcium, a variety of trace elements and heavy metal content of lead, chromium, cadmium, mercury, arsenic and other magnesium, sulfur, iron, manganese, boron, zinc, copper, chlorine and silicon. ★ high-halogen light source, the filter-through processing, to ensure a stable source wavelength, the silicon semiconductor as the signal receiving system, the level of life up to 100,000 hours. Light stability, good reproducibility and accuracy. ★ colorimetric groove part single-channel design, no mechanical displacement and wear, optical positioning accuracy test to ensure the accuracy of the measurement results. ★ fertilization expert system supporting data, can the country hundreds of kinds of agriculture, fruit trees, cash crops target yield scientific computing fertilizer recommendation. ★ patented method for autonomic invention, the absolute guarantee test results meet the national standard requirements. A multi-function, test project is complete: soil nutrient: ● ammonium nitrate, available phosphorus, potassium, organic matter, total nitrogen, pH value, water, nitrogen and other nine; ● Trace Elements: calcium, magnesium, sulfur, iron, manganese, boron, zinc, copper, chlorine and silicon. Fertilizer nutrients: ● single quality fertilizer nitrogen, phosphorus and potassium; ● complex (mixed) in Hefei and urea ammonium nitrate, phosphorus, potassium, biuret; ● organic fertilizer available nitrogen, available phosphorus, K, total nitrogen, total phosphorus, total potassium, organic matter, all kinds of humic acid, trace elements (calcium, magnesium, sulfur, iron, manganese, boron, zinc, copper, chlorine, silicon) and the like. Plant nutrition: ● plants nitrogen, phosphorus and potassium; nitrate, nitrite; calcium, magnesium, sulfur, iron, manganese, boron, zinc, copper, chlorine, silicon other items. Tobacco nutrients: total nitrogen, total phosphorus, total potassium, reducing sugar, total sugar, boron, manganese, iron, copper, calcium, magnesium and other 20. Soil, fertilizer heavy metals: lead, chromium, cadmium, arsenic, mercury and about a dozen heavy metals. Food (fruit, vegetables, etc.): nitrate, nitrite, heavy metals (lead, chromium, cadmium, arsenic, mercury) other items. Second, the instrument Specifications: 1. Power: AC 220 ± 22V DC 12V + 6V (available onboard power supply can also choose the instrument built-in lithium battery) 2. Power: ≤5W 3. Range and Resolution: 0.001-9999 4. Repeatability Error: ≤0.1% (0.001, potassium dichromate solution) 5. Instrument stability: drift within three minutes less than 0.2% (0.002, transmittance measurements). Instrument warm-up for 5 minutes, within two minutes display digital drift (light measurement), within five minutes of digital drift of no more than 0.3% (transmittance measurement); twenty minutes of digital drift does not exceed 0.5% (through photometric measurements), 0.001 (absorbance measurement); digital drift of no more than three minutes 0.7% (transmittance measurement), 0.002 (absorbance measurement). 6. Linearity error: ≤0.3% (0.003 sulfate test) 7. Sensitivity: red ≥4.5 × 10-5 blue ≥3.17 × 10-3 Green ≥2.35 × 10-3 orange light ≥2.13 × 10-3 8 wavelength range: red: 680 ± 2nm; blue: 420 ± 2nm; Green: 510 ± 2nm; orange: 590 ± 10nm 9.PH value (pH): (1) test range: 1 to 14 (2) Accuracy: 0.01 (3) error: ± 0.1 10. salt (conductivity) :( 1) test range: from 0.01% to 1.00% (2) the relative error: ± 5% 11. Soil Moisture Moisture technical parameters Unit:% (g / 100g); moisture test range: 0-100%; error is less than 0.5% 12. soil available N, P, K in nutrient leaching once and simultaneously determination 13. Scientific Steering fertilizer nitrogen fertilizer (N ), phosphorus (P), potassium (K) and other nutrients at the same time, rapid and accurate detection of 14. Test Speed: test a soil sample (N, P, K) ≤30 minutes (including pre-treatment, without any attachments users ) 15. simultaneously measure eight soil samples ≤1 hour (including pre-processing time) 16. Data Printing: Built-in high-grade one-button thermal printer (domestic first) Third, the test speed: test a soil sample (N, P, K) ≤30 minutes while detecting three soil samples (N, P, K) ≤40 minutes; test a sample of fertilizer (N, P, K) ≤50 minutes while detecting three fertilizer sample (N, P, K ) ≤1.5 hours. Fourth, the test error: Soil error ≤5%; fertilizer single error ≤0.5%, NPK three error ≤1%. V. Product instrument features: full-featured: the most comprehensive testing program at home and abroad (all types of agents can be optional). It is complete: The instrument set drug, device, instrument as a whole, easy to carry, the equivalent of a small laboratory. Adapted to the agricultural service sector or agricultural dealers, fertilizer and soil testing, fertilizer manufacturers to identify genuine and fake fertilizer. Easy operation, fast speed, finished drug that is used to open the bottle, no configuration. Sixth, after-sales service: Instrument whole year warranty and lifetime free maintenance service, free shipping equipment, free training. Free lifetime technical support, soil and fertilizer and other agricultural related! Unit: Agricultural Science and Technology Co., Zhengzhou Jin: 0371-63603930 86055630 QQ: 2543987310 (business) 183 783 709 (Technical) E-mail: zzjngs@126.com Address: Zhengzhou City Fengle Hardware & Electrical City 28-1-12