Fertilizer content detector

Features:

★Upgraded version, plastic-sprayed steel plate shell design, sturdy and durable, with complete sets of accessories and finished medicines.

★Microcomputer control, digital circuit, program design, LCD display, AC and DC dual-purpose, can be used for field flow testing.

★Resolution: 0.001, touch button, built-in new generation thermal printer, can print test results.

★Can detect available nitrogen, available phosphorus, effective potassium, total nitrogen, total phosphorus, total potassium, organic matter, pH, calcium, magnesium, sulfur, iron, manganese, boron, zinc, copper, chlorine, silicon, molybdenum and other trace elements and various heavy metals such as lead, chromium, cadmium, mercury, arsenic, nickel, aluminum, fluorine, titanium, selenium in fertilizers and organic fertilizers (including foliar fertilizers, water-soluble fertilizers, spray fertilizers, etc.). ★Adopt high-brightness LED light source and double-wheel filter processing technology to ensure the stability of the light source wavelength. Silicon semiconductor is used as the signal receiving system, and the life span is up to 100,000 hours. The light source is stable, reproducible and accurate.

★The colorimetric tank adopts a single-channel design, without mechanical displacement and wear, and the optical path test positioning is accurate to ensure the accuracy of the measurement results.

★Adopt independent patent analysis method (patent number: ZL 2018 2 1777724.7) to ensure that the test results meet the national standard requirements.

★Built-in thermal printer, the fertilizer print result is percentage content, and the test error is less than 0.5%.

The fertilizer nutrient detector has multiple functions and complete test items:

Fertilizer nutrients: ● Nitrogen, phosphorus, and potassium in single-element fertilizers; ● Ammonium nitrogen, nitrate nitrogen, phosphorus, potassium, and biuret in compound (mixed) fertilizers and urea; ● Quick-acting nitrogen, quick-acting phosphorus, quick-acting potassium, total nitrogen, total phosphorus, total potassium, organic matter, and various humic acids in organic fertilizers (foliar fertilizers). It can be expanded to detect trace elements such as calcium, magnesium, sulfur, iron, manganese, boron, zinc, copper, chlorine, silicon, molybdenum, and various heavy metals (lead, chromium, cadmium, mercury, arsenic, nickel, aluminum, fluorine, titanium, and selenium).

Technical indicators:

1. Power supply: AC 220±22V DC 12V+5V (vehicle power supply or built-in lithium battery can be selected)

2. Power: ≤5W

3. Range and resolution: 0.001-9999

4. Repeatability error: ≤0.02% (0.0002, potassium dichromate solution)

5. Instrument stability: digital drift within two hours is less than 0.2% (0.002, transmittance measurement). After the instrument is turned on and preheated for 5 minutes, the digital display has no drift within one hour (transmittance measurement), and the digital drift does not exceed 0.2% within two hours (0.002, transmittance measurement).

6. Linear error: ≤0.1% (0.001, copper sulfate detection)

7. Sensitivity: red light ≥4.5 × 10-5 blue light ≥3.17 × 10-3 green light ≥2.35 × 10-3 orange light ≥2.13 × 10-3

8. Wavelength range: red light: 680 ± 2nm; blue light: 420 ± 2nm; green light: 510 ± 2nm; orange light: 590 ± 10nm

9. PH value (acidity): (1) Test range: 1 to 14 (2) Accuracy: 0.01 (3) Error: ±0.1

10. Simultaneous, rapid and accurate detection of nutrients such as nitrogen (N), phosphorus (P), potassium (K) in fertilizers

11. Test speed: Test one fertilizer sample (N, P, K) ≤50 minutes (including pre-processing time, no user-provided accessories required)

12. Simultaneous test of 5 fertilizer samples ≤2 hours (including pre-processing time)

13. Data printing: built-in new one-button thermal printer

14. Reserved 232 data interface, can be connected to a computer for data transmission.

Test speed:

Test one compound fertilizer sample (N, P, K) ≤50 minutes; add 20 minutes for each additional fertilizer sample.

Test one organic fertilizer sample (N, P, K, organic matter) ≤1.5 hours; add 30 minutes for each additional sample.

Test error:

Fertilizer single item error ≤0.5%, nitrogen, phosphorus and potassium three item error ≤1%.

Instrument features:

Full functions: Comprehensive test items at home and abroad (all kinds of drugs can be purchased).

Full supporting equipment, the instrument integrates drugs, instruments and instruments, is easy to carry, equivalent to a small laboratory, users only need to provide distilled water to complete all operations within the required time. Suitable for agricultural service departments or agricultural material dealers to identify the authenticity of fertilizers, fertilizer manufacturers to control fertilizer production, agricultural quality inspection departments to crack down on agricultural material counterfeiting, and standardize the agricultural material market.

Reliable performance: The working stability is more than 10 times better than the national standard JJG179-90 index, and the repeatability reaches the index level of grating spectrophotometer.