-
1) Place the balance on a stable, level table and observe the nameplate on the base of the balance.
and the indexing value on the vernier scale.
and make a record. Read the manual of the balance used to find out its performance and specifications.
2) Put the free tick at the ruler, adjust the balance nut at the right end of the beam (some balances are left and right), when the pointer points to the first tick of the index dial (or the angle of the left and right deviations from the ** tick line is equal), indicating that the beam is balanced at this time.
3) Weigh the mass of the solids.
Place the wooden block gently on the left plate of the scale, with tweezers.
Gently add or subtract weights to the right disc and move the yard until the balance is balanced.
The mass m1 of the wooden block is recorded according to the weight and the playing code, the weight is put back into the box, the traveling code is zeroed, and the wooden block is taken down.
Separate the aluminum and iron blocks.
Put them on the left disk and weigh out their masses m2 and m3.
4) Weigh the quality of the liquid.
Weigh out the empty beaker with a scale.
The quality of the M cup.
Pour an appropriate amount of water into the beaker, weigh the total mass m of the beaker and water with a balance, and calculate the mass of water in the beaker.
Place the weights back in the box, return the tick to zero, remove the beaker, and pour the water back into its place.
Precautions] 1) At the beginning of the experiment, the balance must be placed on a level table.
2) At the beginning of the experiment, before adjusting the balance of the beam, the code must be placed at the zero scale mark of the scale.
3) When weighing, the measured object is placed on the left plate, the weight is placed on the right plate, and the weights must be added or subtracted with tweezers when weighing, and they should be handled gently. When the weights are used up, they should be put back in the weight box. Weights cannot be borrowed or exchanged between experimental groups.
4) During the experiment, pay attention to keep the balance and weight clean and dry, do not touch the balance tray with your hands, and do not put wet things or chemicals directly in the balance tray.
-
1. Place the tray balance on the horizontal tabletop and use tweezers to dial the code to the left zero position of the ruler.
2. Next, adjust the balance nut so that the pointer points to the ** scale mark of the index dial.
3. The object must be placed on the left plate of the tray balance, and the weights should be placed from large to small in the leather base.
4. When there is no smaller weight to add, then move the code to make the pointer point to the first tick mark of the index dial again.
5. The mass of the object is divided into two parts, the first is the mass of the right plate weight, which is 40 grams, then the value on the ruler is grams, and the total should add up to grams.
6. After the experiment, take the weight back into the box when burning, remove the object, return the code to the zero position on the left, and arrange the experimental instruments.
-
Here's how to use a pallet balance:Material tools: 1 pallet balance, 1 power bank, 1 tweezer clip.
1. Place the tray balance on the horizontal table and remove the rubber ring.
2. Move the code to the zero tick mark at the left end of the ruler, adjust the balance nut, and make the pointer pointing to the index dial.
3. Put the object on the left (prepare the power bank that is lacking in advance), estimate the approximate mass of the object, put the weight on the right, and use tweezers to take the weight, from large to small, increase or decrease appropriately.
4. Move the code to balance the balance again, and the mass of the object is equal to the total mass of the weight plus the corresponding indicator of the code.
5. Arrange the weighed pallet balance.
Restatement of the problem. I think this is very simple, don't think too hard, this is to repeat the problem to be solved, of course, as much as possible. >>>More
There are 4 steps to <> the correct use of caliper measurement, which are to observe the size of the workpiece to be measured, observe the workpiece to be measured, pull the caliper open, and record the caliper reading. >>>More
As long as the fiber laser marking machine is controlled and operated by the computer, first open it with the special lock of the laser machine, press the power button, and then turn on the computer, start the laser, print the content, set the printing parameters, start the printing - there is a foot switch, or operate the printing option, or the photoelectric eye and so on to give the printing letter.
Whether it's an instruction or a tutorial operation.
Make two products of the same kind in exactly the same order. >>>More