Analytical balance industry speeds up the pace of technological innovation

There are many kinds of analytical balance: mechanical, electronic, manual, semi-automatic, full-automatic and so on Calibration method of analytical balance: it can be divided into internal calibration type and external calibration type The so-called internal calibration means that the electronic balance is equipped with internal calibration weights, which is convenient to be retrieved at any time and calibrated with one key For external calibration, press the calibration key to manually calibrate the weight from the outside Check and adjust the balance to the horizontal position, check whether the power supply voltage matches in advance (if necessary, configure voltage regulator), power on and preheat the balance to the required time according to the instrument requirements, turn on the balance switch after sufficient time of preheating, and the balance will automatically adjust the sensitivity and zero point After the stable sign is displayed, the official weighing can be carried out When weighing, place the clean weighing bottle or paper on the weighing plate, close the side door, press the leather button gently, the analytical balance will automatically calibrate the zero point, and then gradually add the substance to be weighed until the required weight The weight of the substance to be weighed is the actual value displayed on the display screen when the "→" sign appears at the lower left corner of the display screen After weighing, remove the weighing bottle (paper) in time, close the side door, cut off the power supply, and make use of the registration Slowly rotate the lifting pivot button, open the analytical balance, and observe the swing range of the pointer If the pointer swings to one side, adjust the zero adjustment screw on the balance beam Put the substance to be weighed into the center of the left panel from the left door, press the initial weighing weight first weighed on the tray balance, use tweezers to clamp the appropriate weight from the right door into the center of the right panel, use the left hand to slowly half lift the lifting pivot button (because when the mass difference between the two sides of the balance is too large, the full lifting pivot button can cause the lifting lug to fall off and damage the blade), and add and reduce the weight according to the deviation of the pointer After the weight of the gram group is tested, add the swim weight for adjustment In the process of balance adjustment by adding the traveling code, the right door must be closed At this time, all the lifting pivot buttons can be raised After the pointer swings and stops, the scale indicated on the label should be at or near the zero point During weighing, the substance shall be taken and discharged from the side door, and the box door shall be closed during reading to avoid the balance swing caused by air flow The front door is only used for maintenance or removal of residues If the analytical balance is not used for a long time, it shall be preheated by power on regularly once a week for 2h each time to ensure that the instrument is always in good use The hygroscopic agent (such as silica gel) shall be placed in the analytical balance When the hygroscopic agent changes color after absorbing water, it shall be baked and replaced immediately at high temperature to ensure the hygroscopic performance