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The electronic balance is the latest development of the balance in the balance, and is one of the commonly used weighing instruments in the chemical laboratory. It has the advantages of quick weighing and easy to use. Currently used are mainly top load type and bottom load type. The top-loading electronic balance is the earliest developed electronic balance, which is manufactured according to the principle of magnetic compensation. Electronic analytical balances are a class of electronic balances, but the readings are more accurate, typically up to ±0.1 mg. Usually the electronic analytical balance is surrounded by a frame to ensure accuracy. Electronic balances sometimes fail, the following are the solutions.
1, the electronic balance pointer beats
When the beam is lifted, if the distance between the knife edge of the fulcrum knife and the knife pad is different, the pointer will jump when the balance is opened. At this time, loosen the screw in front of the left arm of the horizontal bracket, and then use the hand.æ»Adjust the height of the small pillar until the pointer no longer jumps.
2, the electronic balance swing is blocked
1) First check if the electronic balance is in a horizontal state;
2) According to the principle of left and right, check whether the inner damper is misplaced;
3) Observe the gap around the inner and outer dampers from the top of the balance. If the size is not uniform, remove the weighing disc and the lifting lugs at this time, turn the inner damper 180° and try again.
4) If the above method cannot be adjusted, gently loosen the screw that fixes the outer damper, view it from the top of the balance, and use the inner damper as the standard to move the position of the outer damper until the inner and outer dampers no longer rub, then tighten Screws are fine.
3. Electronic balances are uneven
The electronic balance is too high. When the electronic balance is turned off, the plate is lifted upwards, sometimes the lifting ear falls off; the disk is too low, and the disk is still free to swing after the electronic balance is closed. In this case, the weighing plate can be removed, the tray is taken out, and the position of the screw on the rod below the tray is adjusted to adjust the height of the tray until the proper position.
4, the electronic balance lifting ear off the side or side
Most of the lifting of the lifting lugs is caused by the speed of opening and closing the balance too fast. The lifting lugs can be gently repositioned and used. If the lifting lugs are not stable, the left and right sides will also fall off. Use a needle-nose pliers to loosen the screw under the small post at the end of the horizontal bracket, slowly move the small pillar to the left or right, and then tighten the screw, and observe it until it is no longer sideways. If the lifting lugs are jumping back and forth, use the lever to insert into the upper hole of the small pillar to adjust to the same height of the small pillar.
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