Theoretical basis of laboratory phosphate analyzer MHY-22178
The instrument utilizes the principle of photoelectric colorimetry according to Lambert-Beier's law: when a bundle of monochromatic parallel light passes through a colored phosphate ion solution, part of the light energy is absorbed by the solution. If the thickness of the liquid layer remains unchanged, the light energy is absorbed. The degree (extinction E) is proportional to the concentration of the colored substance in the solution. Its mathematical expression:
Where: LgI0/I = KCL or L = KCL
I: incident light intensity
I: Through light intensity
C: concentration of colored substances
L: thickness of the colored liquid layer
K: constant (related to the nature of the solution, the wavelength of the incident light, etc.)
working principle
The chemical analysis method of the instrument adopts the phosphorus molybdenum yellow photoelectric colorimetry method, and the depth of the yellow is proportional to the phosphate content, so the colorimetric method can be used as the measurement of the phosphate content. The instrument light path system uses a monochromatic light source. The single-plate structure form, the photoelectric conversion signal, is processed by the single-chip microcomputer and sent to the display screen to display the concentration of phosphate ions in the water sample to be tested.
The meter is a benchtop meter. Carefully set in the standard chassis, reasonable layout, a complete inspection system consists of components such as cuvette components, electrical appliances, optical path, flow path, display, etc., to ensure the realization of various functions of the instrument, and easy maintenance.
There are four touch-operated buttons on the front panel of the instrument: â–² (top), â–¼ (bottom), ESC (exit) and ENTER (confirm), followed by 220V power switch.
Instrument menu includes: blowdown, print data, automatic calibration, chemical calibration, automatic calibration
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