Soil testing and soil nutrients instrument manufacturers offer Tachometer Tachometer Ou Keqi a soil fertilizer, OK-A2 and Fertilizer nutrients Tachometer Features 1, the use of microprocessor technology, digital circuit, program design, microprocessor control, touch buttons, LCD. 2, cross, straight [automotive and lithium battery (optional)] dual,? Built-in high-capacity battery, can work for four hours in a row in the absence of an external power supply. 3, high brightness LED lamp as the light source, the silicon semiconductor as a signal receiving system, long life of 100,000 hours. 4, part of a dual optical cartridge mechanism designed to avoid systematic errors produced different channels. 5, job stability than six times the national standard JJG179-90 indicators, repeatability of grating spectrophotometer indicators. 6, through GPRS module, the data wirelessly to your phone and computer network (optional). Two, OK-A2 and Fertilizer nutrients Tachometer a test project, soil nutrients: nitrogen, ammonium nitrogen, available phosphorus, potassium, organic matter, total nitrogen, total phosphorus, total potassium, pH, conductivity salt? moisture. 2, soil, calcium, magnesium, sulfur, boron, chlorine, silicon and other trace elements. 3, fertilizer nutrients: elemental nitrogen fertilizer, phosphorus and potassium; complex (mixed) in Hefei and urea ammonium nitrate, phosphorus, potassium, biuret, humic acid; organic fertilizer available nitrogen, available phosphorus, potassium, total nitrogen, total phosphorus, total potassium, organic matter. 4, plant nutrients: nitrogen plants, phosphorus and potassium. Three, OK-A2 and Fertilizer nutrients Tachometer technical parameters 1, range and resolution: 0.001-9999 2. Stability: drift is less than three minutes 0.003 3, linearity error: less than 0.003 4, repeatability error: less than 0.005 5 Sensitivity: red ≥4.5 × 10-5 ?????? blue ≥3.17 × 10-3 6, wavelength range:? 620 ± 2nm ??? red light blue 440 ± 2nm 7, the moisture content of the test range: 0 -100% Accuracy: ± 2% 8, PH value (pH) Measurement parameters (optional) A, test range:? 1 ~ 14 ????? B, error:? ± 0.1 9, salt (conductivity) Measurement parameters (optional) ?? A, test range: 0.01% ~ 1.00% ????? B, relative error:? ± 5% 10, the instrument used in power: A, AC: 180V ~ 240V, 50 Hz ?? B, DC: 12V, 5W (car) C, lithium:? 12V, 5000MA 11, NPK combined extraction: 3 minutes to complete soil nitrogen, phosphorus and potassium, while leaching 12, the test speed: ? test a soil sample (N, P, K) ≤30 minutes (including pre-processing time) ?? simultaneously measured five soil samples ≤50 minutes (including pre-processing time) 14, shock resistance: Qualified four, OK-A2 soil Easy fertilizer nutrients Tachometer operating ???? fully furnished: Tachometer set drug, device, instrument as a whole, easy to carry, the equivalent of a small laboratory, easy on-site testing, mobile service. Open bottle of finished pharmaceutical that is used to ensure that the test speed and quick. Low cost, a measure of nutrients (N, P, K) costs only $ 2. Fifth, the instrument configuration (aluminum lockbox 1: 410 × 310 × 145mm ?, weight 4.5kg) ???? host, cuvette, straws, medicine set, filter, suction ball, measuring spoon corner, Lvhe ? unit name, the reaction flask, power lines:? Zhengzhou Ou Keqi Instrument Manufacturing Co., Toll Free:? ???? 400-669-0568 Mobile: 18625526098 Sales Tel:? ?? ??? 0371-67897883 67897873 86,533,628 pass ???? ??? ?? true:? 0371-65716776 ??? mail: zzokq17@163.com net ???? Address:? www.zzokq.cn ???? www.zzokq.com? to ???? ???? Address:? Rita Road 96 Tech Industrial Development Zone of Zhengzhou City