Soil Available Nitrogen Detector, AC commercial power: 220V to 240V, 50Hz, Accuracy: ±2%

Instrument Model:
Soil Available Nitrogen Detector can detect available nitrogen, available phosphorus, available potassium, and organic matter in soil, plants, chemical fertilizers, and biological fertilizers. Nitrogen, total phosphorus, total potassium, organic matter, soil pH, and soil salinity are important instruments for grassroots agricultural technology extension service system construction.

Features of Soil Available Nitrogen Detector:
1. It can detect available nitrogen, available phosphorus, available potassium, organic matter content in soil, plants, chemical fertilizers, biological fertilizers, soil acidity and alkalinity, and salt content in soil. Nitrogen, total phosphorus, and total potassium. 
2. With Beijing time display function, it can automatically record and save the test sample time. 
3. The host can store no less than 1000 sets of test data, the data can be read out at any time. 
4. The storage and printing contents include: date of detection, time of detection, test items, sample content, crop varieties, fertilizer varieties, fertilization amount, and other relevant information. 
5. Fertilizer varieties and crop varieties can be selected on the host computer, the target output can be input, and the recommended fertilizer amount can be automatically calculated. 
6. Can be arbitrarily adjusted on the host fertilizer utilization. According to different regions, fertilizer adjustment factors and crop fertilization parameters can be arbitrarily adjusted. 
7. Bilingual switching between Chinese and English, large-screen LCD display Chinese or English, and guide the operation of each step. 
8. The look-back function during the test, so the product is more convenient and reasonable (with backlighting, can adapt to night use). 
9. Crop varieties, crop yields and fertilizer varieties can be set according to local conditions and the amount of fertilizer can be calculated automatically. 
10. The tested sample results are automatically transferred to a computer for analysis, summarization, and preservation. The nutrients required for the growth and development of the 73 kinds of crops are stored in the computer; the data can be stored, sent remotely, printed by a computer, or can be carried out on a host computer without a computer. Soil testing formulas are printed out on a micro-printer and used for both AC and DC .

Technical parameters of soil available Nitrogen Detector:

Nutrient measurement technical parameters: 
(1) Stability: A value (absorbance) less than 0.003 within three minutes 
(2) Repeatability: A value (absorbance) less than 0.005 
(3) Linearity error: Less than 3.0% 
(4) Sensitivity: Red ≥4.5×10-5; Blue ≥3.17×10-3 
(5) Wavelength range: Red 620±4nm; Blue light 440±4nm; 
(6) Shock resistance: Qualified (Note: The above technical parameters are all higher than the national standard) 

PH value (acidity) measurement technical parameters: 
(1) Test range: 1 to 14 
(2) Error: ± 0.5  
Soil moisture technical parameters: 
(1) Moisture unit: % (m3/ M3) 
(2) Moisture content test range: 0 to 100% 
(3) Accuracy: ±2% 

Salt content (conductance) Measurement technical parameters: 
(1) Test range: 0.01% to 1.00% 
(2) Relative error: ±5 %

Power supply for this instrument:
(1) AC commercial power: 220V to 240V, 50Hz