Overview
YOKE VIS-722S visible spectrophotometer is an economical analytical instrument with optional RS232 interface output. Its metering accuracy is excellent and higher than that of ordinary equivalents. Widely used in testing, food, petrochemical industry, environment protection and monitoring and many other fields.
Features
1. Digital display measurement value
2. Automatic light gate, automatic zero adjustment and hundred adjustment instrument correction
3. Adopt original imported tungsten lamps to ensure the service life of the instrument
4. Wide sample chamber, up to 10cm Cuvette can be placed
5. Optional output port RS232, which can realize the function of connecting printer and computer
Principle
The instrument works based on the principle of Spectrophotometric method, spectra-trophotometry. The composite light emitted by Illuminant is separated by a monochromator and becomes monochromatic light and irradiates on the sample. The sample selectively absorbs light of a specific wavelength, and the detector measures the intensity of the transmitted light and converts it into values such as Absorbance or Transmittance through an internal circuit, which is displayed on the digital display screen.
Applications
Testing, food, petrochemical industry, environment protection and monitoring
Standards
The data did not mention specific compliance criteria.
Steps
1. Turn it on and warm up.
2. Switch between A (Absorbance), T (Transmittance), C (concentration or calculate F value), and F (input F value to measure concentration) modes through the [MODE] key.
3. In T mode, use the [?/100%] key for 100% T (or 0.000ABS) correction.
4. In T mode, use the [↑/0%] key to perform 0% T correction.
5. Put in the sample to be tested and read the measurement value on the display screen.
6. If you need to output data, you can use the optional RS232 interface to print or send it online through the [PC] key.
Notice
• The instrument should be placed on a stable, non-bright workbench.
• It needs to be preheated for a period of time after starting to reach a stable state.
• When using the Cuvette, make sure the light-transmitting surface is clean and free of fingerprints or stains.
• When correcting, a shading body (such as the light blocking rod or blackbody matched with the instrument) is required for 0% T correction, and a reference solution (such as a blank solvent) is required for 100% T correction.
• After measurement of different samples or changing wavelengths, it is recommended to re-perform 100% T correction.
• The sample chamber should be kept clean and dry to prevent liquid from splashing in.
• When not in use for a long time, it should be regularly powered on for maintenance.
