土壤养分的检测器，检测N P K

Name:Soil Nutrient Tester Model:TPY-6A Introduction: The soil tester can quickly test the N, P, K, humic acid , organic matter, salinity, and PH in the soil, fertilizer and plants.The machinecan storeand print data .Have complete chemicals and it's for free at first time. Characteristic: 1.Quickly test the N, P, K, humic acid , organic matter, salinity, and PH in the soil, fertilizer and plant 2.With the function of time display, can automatically record and save the time of test sample. 3.Store about 1000 groups datum(time, place, fertilizers) , datum can be checked at any time. 4.Print like the test date, number, items, sample contents, variety and so on 5.Chinese big-screen LCD shows, and will guide you how to operate. 6.When in the test, it has the functions of playback, so it is very convenient and reasonable. 7.Armor plate shell, firm, beautiful and durable. 8.According to the local situation, you can set the variety, productivity, kind of fertilizer and will automatically calculate the fertilizing amount.(TPY-6A) Specification: 1. Nutrient measurement technology indicators: 1.1 Stability: A(absorbency of illumimation) drift < 0.003 in three minutes. 1.2Repetitiveness: A(absorbency of illumimation) <n 0.005 1.3Linearity errors: <3.0 % 1.4 Sensitivity: Red light ≥4.5×10-5 Blue light ≥3.17×10-3 1.5Wavelength range: red light 620 ±4nm Blue light 440±4nm Green light 520± 4 nm 1.6Shake resistance: qualified (Attention: above indicators all exceed national standards) 2. PH specification: 2.1 Range: 1-14 2.2 Error: ±0.1 3. Salinity specification: 3.1Range: 0.01% -1.00% 3.2 Error: ±5% 4.Power: Alternating current (AC): 80V- 240V,50Hz,2) Direct current: 18V,5W (With tester)