Table Balance Counterbalance Students Teaching Lab Mechanical Scale Top-pan Balance With Weights Tweezer Max. 100 g (d=0.1g)

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Description

Description

Table balance made by the tray, beam, balance nut, scale, pointer, knife edge, base, indexing scale, travel code, weight and other components. By the fulcrum (axis) in the center of the beam supporting the balance beam and the formation of two arms, each arm hanging or holding a disk, one of the disk (usually the right dish) placed a known weight of the object (weight ), Another disk (usually the left disk) where the object to be weighed, travel code in the scale on the slide. When the pointer fixed on the beam does not swing and points to the middle of the scale or when the left and right swing amplitude is small and equal, the weight of the weight and the travel position of the number of shows the weight of the object to be weighed.

Technical Parameters
Max. Range: 100 g
Accurate scale: 0.1 g
Length: 195 mm
Height: 90 mm
Plate diameter: 70 mm
Weights: 5 pcs
Tweezer: 1 pcs

Instructions
1. Place it in a level. Travel code to zero.
2. Adjust the balance nut (nut at both ends of the balance) to adjust the zero point until the pointer is centered on the center tick.
3. Adjust the balance: adjust the balance nut on the beam (method: if the pointer refers to the left side of the indexing plate, the balance nut should be adjusted to the right, on the contrary, the balance nut to the left), so that the pointer refers to the index Engraved line (or pointer in the middle of the scale of the amplitude of the swing one or so.
4. Add the weight from the estimated maximum value of the weighing object, and gradually decrease. The tray balance can only be called 0.1 grams. Add the weight and move the code on the ruler until the pointer is aligned again at the center tick.
5. Superheated and overheated objects can not be placed on the balance. Should be placed in the dryer to the room temperature and then said.
6. The quality of the object = weight + travel code
7. Take the weight must use tweezers, remove the weight should be placed in the weight box, weighing is completed, should travel back to zero.
8. When weighing dry solid medicine, put the same quality of paper on both trays and place the medicine on paper.
9. Easy deliquescence of the drug, must be placed on glassware (such as: small beaker, surface dish) in the weighing.
10. If the weight is rusty, the measurement result is too small; if the weight is worn, the measurement result is too large.

Usage note
1. Move the code in advance to the 0 scale line and adjust the balance nut so that the balance is balanced.
2. Right put the weight, left the object.
3. Weight can not be used by hand, use tweezers folder to take. When you use the balance, you can not move by hand.
4. Overheated objects can not be placed on the balance weighing. Should be placed in the dryer to the room temperature and then said.
5. Add weight should be from large to small, you can save time.
6. Do not touch the nut during weighing.
7. If the weight and weight to be weighed object, then the quality of the object is greater than the actual.

With high-quality weight: 5g, 10g, 20g, 20g and 50g, total 5pcs.