Knowledge about scales

Knowledge about scales is introduced as follows:

1, pole scales

Wooden or metal poles with a star and taper as the main body, and equipped with steelyard (weights), steelyard ropes and scales (or hooks) of the small scale. According to the scope of use and the size of the scale is divided into 3 kinds of arbitrage, disk scale and hook scale. Pole scale is a first-class arm lever, is the use of the lever balance principle to weigh the weight of the simple scales, by the wooden scale with the star of the scale pole, metal hammer, rope, etc. Composition.

Pole scale consists of the first type of lever, its focus is on the outer end of the fulcrum. When weighing, depending on the weight of the object to be weighed, the weight and the weight rope are moved on the pole to maintain balance. The mass of the object to be weighed can be read out from the star point on the pole corresponding to the weight rope at the time of balancing. The structure and production process of the pole scale is simple, small, light, easy to carry and use, low cost, but low accuracy.

2, table scales

Weighing in the 50 kg to 1000 kg lever-type mechanical scales. Load-bearing device for the rectangular table, usually in the ground for use of small scales. According to the principle of structure can be divided into two categories of mechanical and electronic bench scales.

With a light deadweight, easy to move, multi-functional, display and scale body connected by cable, use can be placed as needed and other characteristics. In addition to weighing, tare, totalization and other functions, but also with the actuator on-line, set the upper and lower limits to control the fast and slow feeding, can be used as a small package dosage scales or quantitative scales.

3, case scale

Weighing capacity of 50 kilograms (excluding 50 kilograms) below the lever-type mechanical scales. According to the structure and function can be divided into two categories of ordinary case scale and electronic pricing scale.

It is characterized by high measurement accuracy, easy and fast keyboard operation, and has digital memory and other functions. When you can not press the key, you can lock the key to avoid malfunction. The maximum weighing capacity/minimum dividing value of the price counting electronic scale is 3kg/1g, 6kg/2g and 15kg/5g.

4, spring scales

The use of spring deformation under the action of gravity to determine the weight of the object scale. Its weight can be from 1 mg to tens of tons. Scales that utilize spring extension to seek loads have a single-sided display and a double-sided display. A spring scale, also called a spring dynamometer, is a device made to measure the magnitude of a force by using the relationship between the deformation of a spring and an external force that is proportional to the deformation of the spring. At different latitudes of the earth, the mass of the same object measured by the same spring scale will vary.