What are the scales?

The balance is a device designed fordetermination of the mass of various substances and bodies. In everyday life, each of us is often faced with the task of determining the mass of the object, whether it is products or your own weight. In the framework of this article, we will understand what scales are based on the principle of work, accuracy and other characteristics. Also we will give the criteria for choosing the weights that will help you acquire the most suitable device.

Classification of weights

According to the principle of its operation, all scales are divided into 5 groups:

Leverage. Their principle of operation is based on the mechanism of the lever, and the mass is measured by comparison with the reference weight.
Spring. They measure the mass in terms of the degree of tension of the spring.
Strain gauge. Their action is based on the transformation of the deformation value of the strain gauge.
The hydrostatic balance is designed to measure the density of liquids. They act on the principle of Archimedes' power.
Hydraulic

In terms of application, all scales are divided into manygroups in accordance with GOST 29329-92, we will not dwell on them separately. Also, the balance is divided into electromechanical and mechanical, with automatic, semi-automatic and non-automatic balancing, with an analog or discrete reading device. Laboratory scales have 3 classes of accuracy: medium, high and special.

Consider the main types of weights that have found wide application in the modern world.

Floor scales for weighing

Almost every house has such a device,designed to measure your own weight. Consider how to choose among the large variety of floor scales that are most suitable for you.

Mechanical floor scales, belonging to the groupspring, are distinguished by their durability and low price. Also their important advantage - energy independence, using such scales, you do not have to spend on batteries. However, they also have a significant disadvantage - the measurement error. With a weighing range of 1-250 kg, the weighing error will be 100-500 g. In addition, before each weighing, they must be set to "0". If you decide to buy a mechanical balance, then be sure to look at the upper limit of weighing, especially if one of your loved ones weighs more than 100 kg.

Electronic scales are certainly much more accurate,than mechanical, but for their work requires a power source: battery, battery or outlet. In the shops you can find a great variety of electronic scales of the most different price category, equipped with many different functions. Let's figure out what's what for, and consider the main types of electronic scales.

Simple plastic models with functionauto shutdown will cost you quite expensive. And if the budget for the purchase is not limited, then take a closer look at the scales with a platform of metal, heavy-duty glass, wood or stone and additional functions, the list of which is given below.

Several measuring sensors that increase the accuracy of weighing
Clock and thermometer
Sound effects
Anti-slip feet
Overload indication
Saving the result of the last measurement
Remembering the dynamics of weight for several people (2-10)
Calculation of ideal body weight
Calculation of the mass of muscle, fat, bone tissue, as well as the amount of water in the body
Selecting units of measure
The ability to integrate with a PC via a USB cable to download and print data
Optional removable monitor

Kitchen scales

Scales for weighing products are also availablemechanical and electronic. In addition, there are very cheap changeless, designed to weigh products in packages. But if this is not enough for you, then take a look at the electronic kitchen scales measuring the mass to within a fraction of a gram and equipped with additional useful functions, among which:

Determination of the caloric value of the product to be weighed
Auto Power Off
Overload indication
Tarokompensatsiya
Clock, alarm, thermometer and humidity sensor

And many more

The main criteria for choosing kitchen scalesare the maximum limit and measurement error. The usual weighing limit ranges from 2 to 5 kg, and an error of 0.1 to 1 g. Also note the availability of a removable bowl that allows you to conveniently weigh loose products, as well as convenient to care for.

Housings kitchen scales are made of metal andplastic, and bowls - from glass or plastic. It is better to choose a more durable metal case and a bowl of impact-resistant glass, as it is more durable and practical in maintenance.

So, we have considered the question of what kind of scales are, and also found out what to be guided by when choosing household scales. Successful shopping for you!