Calibration and maintenance of digital refractometer
Refractometer instrument calibration: The instrument can be calibrated regularly or when there is doubt about the measurement data. Use distilled water or glass standard blocks for calibration. If there is an error between the measurement data and the standard, a clock screwdriver can be used to correct the small hole in the dispersion handwheel. Carefully rotate the screw inside to move the reticle board up and down, and then measure again until the measurement meets the requirements. When the sample is a standard block, the measurement should comply with the data calibrated on the standard block. Abbe refractometer maintenance: In order to ensure the accuracy of the instrument and prevent damage, please pay attention to the following key points for maintenance and reference:
(1) The instrument should be placed in a dry and well ventilated room to prevent mold from forming on optical components due to moisture.
(2) When testing corrosive liquids, timely cleaning work (including optical parts, metal parts, and paint surfaces) should be done to prevent erosion damage. After using the instrument, it is necessary to clean it properly and store desiccant (discolored silicone) in the wooden box to absorb moisture.
(3) Before and after using the instrument and when replacing the sample, the working surface of the refractive prism system must be cleaned and wiped clean first.
(4) There should be no hard impurities in the tested sample. When testing solid samples, it is necessary to prevent the surface of the refractive prism from being roughened or indented.
(5) Always keep the instrument clean. It is strictly forbidden to touch the optical parts with oily or sweaty hands. If there is dust on the surface of the optical parts, it can be gently wiped with high-grade deerskin or long fiber Cotton wool and then blown off with a leather blower. If there is oil stain on the surface of the optical parts, it should be cleaned with alcohol ether mixture in time.
(6) The instrument should avoid strong vibration or impact to prevent damage to optical components and affect precision
