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I. Performance and Features
1. Mini-processor, digital circuit, programming design, SCM control, touch key and LED display
2. AC/DC (vehicle-carried), inlaid lithium cell, automatic charge and power break.
3. Inlaid thermal printer, storage of printing results.
4. It adopts high-luminance LED lamp as light source, silicon semiconductor as signal receiving system, service life: 100,000 hours.
5. Cassette unit adopts double light paths structure to avoid the system errors arising in different channels.
6. Work stability is 6 times of indices described in national standard JJG179-90, and the repeatability reaches the indices of grating spectrophotometer.
II. Items for Test
Nitrogen, phosphor, kalium, organic matter and so on in fertilizer
III. Technical Parameters
1. Range and resolution: 0.001-9999
2. Stability: Drift within 3 minutes: less than 0.003
3. Linear error: less than 0.003
4. Repeatability error: less than 0.005
5. Sensitivity: Red light ≥4.5 ×10-5 blue light ≥3.17×10-3
6. Wave length: Red light 620±4nm blue light 440±4nm
7. Power supply used in the device:
a. AC: 180V~240V, 50Hz
b. DC: 12V, 5W (vehicle-carried)
c. Lithium cell: 12V, 5000MA (with charger)
8. Speed test: specimen test (N, P,K) ≤30 minutes (including treatment time)
9. Five-specimen tests ≤50 minutes (including treatment time)
IV. Simple for Operation
Complete sets: integrating drug, instrument and apparatus, easy to carry, like a small lab, inlaid lithium cell, automatic charge, power break for tests in situ, movable service. Medicament bottles are available if opened, and it assures the quick test and low cost (1 yuan only for one nutrient test such as N, P, K).
V. Configuration (one aluminum alloy password box: size: 41×32×18cm, weight: 4.7lg)
Host machine, colorimetric ware, sucker, drugs, filter paper, absorption ball, cylinder, horn scoop, reaction bulb, lens tissue, 220V cables, 12V cables, printer, aluminum box, etc.