Overview
The YUE FENG 721 visible spectrophotometer is a precision opticalin strument with a new microcontroller system, featuring powerful functions, small size and easy maintenance. It uses a professional Optical inspection system design and sealing grating monochromator, equipped with a halogen tungsten lamp light source, Wavelength range 340~ 1000nm, suitable for transmittance and Absorbance measurement.
Features
1. Adopt a new type of single-chip microcomputer system, with strong functions, small size, and easy maintenance
2. Use flame retardant, insulated all-plastic shell, exquisite shape design, easy operation, high safety factor
3. True 4-bit LCD display, Measurement range, high calculation accuracy
4. Membrane keyboard, good feel, dustproof, waterproof and easy to clean
5. Professional Optical inspection system design, sealing grating monochromator, adopt scientific anti-mildew technology, eliminate stray light technology
6. Use a lens to concentrate light to avoid a straight drop in energy after the reflector is ablated for a long time
7. Special precision lamp holder, which can replace the halogen tungsten lamp by itself without having to adjust the light path again
8. Automatic Adjustment 0%, Automatic Adjustment 100% and Absorption OA
Principle
The instrument adopts a single beam of light Optical inspection system, equipped with 1200/mm Holographic grating, and separates monochromatic light of specific wavelengths through a sealing grating monochromator. The light emitted by the Illuminant passes through the lens to concentrate and irradiate the sample. Detector measures the intensity of transmitted light, and calculates the transmittance and Absorbance value through the microcontroller system.
Applications
Chemical analysis, biological testing, environment monitoring, pharmaceutical research and development, food inspection, teaching experiments
Standards
Luminosity Precision +/- 1.0% T, Luminosity Repeatability ≤ 0.5% T, Stray Light ≤ 0.5% T@360nm, Wavelength Precision +/- 2nm, Wavelength Repeatability ≤ 1.0nm
Steps
1. Turn on the preheating instrument
2. Set the measurement wavelength
3. Put in the blank sample and perform automatic adjustment of 0% and automatic adjustment of 100%.
4. Put in the sample to be tested
5. Read Transmittance or Absorbance Measured values
6. Record or process data
Notice
• The instrument should be placed on a stable, drying, vibration-free workbench
• Avoid direct light and high temperature environment
• Optical inspection parts are cleaned regularly to keep the instrument clean
• Make sure the instrument is powered off when replacing the tungsten halogen lamp
• Sample chamber should be thoroughly cleaned before and after use
• Power should be turned off if not used for a long time
