balance mechanical pallet scale 100g-1kg high precision laboratory weighing tool

Shelf balance, 2000g/2g tray balance, mechanical electronic balance

Product Name: JPT Beam Balancer

Usage:This series of pallet scales is suitable for industrial and mining enterprises, agriculture, chemistry, schools, and other units for weighing purposes.

Instructions:

1. When using a balance, it should be placed on a flat work surface.

2. Move the swinging hammer to the '0' point on the scale, and align the pointer with the center line to achieve balance. If not, adjust the adjusting nuts at both ends of the lever.

3. When weighing items, try to place the items and the weights in the center of the weighing pan.

4. Scales and weights should be cleaned with soft brushes and kept dry.

5. If the balance is damaged or not functioning normally, it should be stopped from use immediately. It should be sent to the factory or repair department for repair and inspection, and only after it is certified as qualified should it be used again.

6. To ensure the accuracy of the weighing, it is generally recommended to check the scales once a year to prevent any deviation.

Use Caution:

1. The experiment of weighing objects has been changed to use a balance scale, which significantly reduces the experimental requirements for adjusting the balance. This experiment is mainly to practice the correct use of the balance, requiring students to be able to operate correctly.

2. It is necessary to clean the knife grooves of the tray balance in time. Due to the different mechanical structures of the tray scales on the market, it is necessary to observe the disassembly method carefully. Generally, you need to loosen the center knife guide screws at the back and front of the tray balance, remove the center knife guide, and then take off the side knife frame from the knife groove gaps on the left and right sides of the knife frame, to perform the wiping, and then install it back in the original state.

3. If the balance is not used for a long time, apply some butter to the knife and knife slot, place it in the box, and store it in a dry place.

【参考资料】

When the balance is not in equilibrium, the mass difference between the weighed object and the corresponding counterweight can be estimated by the degree of deviation of the pointer from the center, combined with the sensitivity of the balance. For example, if the pointer deviates 4 degrees to the right and 1 degree to the left, the difference is 3 degrees, and it can be estimated to stop at about 1.5 degrees to the right. If the sensitivity of the balance is 0.2 grams, the mass difference between the weighed object and the corresponding counterweight is about 0.3 grams. In this way, by adding about 0.3 grams of weights or moving the micro-adjustment to about 0.3 grams, the balance can be made to be in equilibrium.