Mankind has been using devices to determine weight for many centuries. It is difficult to do without weights both at home and in production. Thanks to the use of new technologies, the introduction of an electronic mechanism of action, a positive result was achieved. Such devices can increase the accuracy of measurements, speed up the weighing process, optimize the packaging of goods and much more. This allowed electric scales to occupy a leading position in the sales market and to displace mechanical predecessors.
Types of Electronic Weights
The consumer is presented with a large selection of weighing instruments. They differ from each other in size, functional characteristics, designs, operational features and capabilities.
Depending on the scope of application, all devices are divided into several groups.
Household
This variety includes kitchen, universal desktop, floor, electronic steelyard, pocket (mini) scales for accurate determination of the mass of small items.
Electronic devices in this category have certain differences.
- Models equipped with a special cup for weighing loose and watery products.
- Devices with a platform and removable stands for measuring loads (objects) of different sizes.
All devices have different control systems.
Some modern models are equipped with additional functionality, for example, diagnostics of indicators of energy value, volume, etc..
Shopping
Designed mainly for portion measurement of the mass of goods, followed by the calculation of the amount, taking into account the cost per unit.
They are also used in the warehouse for the exact establishment of marketable weights and in the packing departments in order to complete the grocery sets with high quality.
The actual use of weighing units with automatic label printing in self-service departments. All models of trade scales are equipped with a display, which is located either on the body of the device, or on an external rack.
Medical
They are compact in size. They used in medical facilities for weighing a newborn baby. For convenient location, the baby is provided with a special platform. All information is displayed.
Laboratory
Designed for optimal weight measurement.
Hydrostatic weighing allows you to determine the exact density of solids or liquids. Professional models are provided with advanced functionality.
Jewelry
They differ in the development of absolutely accurate indicators, they should not exceed deviations of more than 0.01 grams. Exceptions are allowed when taking scrap, here the error can be up to one gram.
As additional equipment, there is a timer that records information about the measurement (date, weight, etc.). Thanks to this, saved data can be transferred to a computer.
In addition, there is still a large number of industrial scales: postal, industrial, crane, automobile, pallet.
The device of different types of electronic scales
Despite the application in different fields of activity, the device of electronic scales has similarities.
The following parts of the device are distinguished.
- Body. is he performs a protective function internal contents of the balance. Usually, plastic or glass is used for its production, this allows not to burden the structure.
- Display (digital screen). His job contains information on weighing results. Modern models are equipped with the ability to store various indicators in memory for their subsequent comparison.
- Strain gage (microscopic plate). This component is the main touch unit of electronic scales. Small plates are evenly distributed around the perimeter of the device. Deforming under the influence of excess weight, the resistance of the strain gauge is distributed in proportion to the weight. Based on the summation of all indicators, the total weight is calculated.
- Circuit board with microchip. She is performs the regulation of the plates, and displays the total weighing data on the display. The board is equipped with a memory that allows you to most accurately track the dynamics of changes in weight.
Electronic balance can be either battery powered or battery powered.
When choosing, it is worth giving preference to a particular unit based on the forthcoming frequency of use of the device. When the equipment is constantly busy, it is better to purchase battery-powered models. Some have a combined power system.
Important! Careful handling of the electronic device guarantees a long product life.
How do electronic scales work?
At the beginning of creation, electronic scales had a principle of operation based on the oscillations of the measuring spring, similar to a traditional mechanical device. A distinctive detail was only the digital display, on which the final weight indicator processed by the electronic circuit was displayed.
Thanks to the improvement of technological developments the operation of modern electronic devices has become possible with the help of special built-in voltage sensors. This allowed for more accurate weighing.
The principle of operation of electronic scales is based on the transformation of gravity, arising when installing weighed items on the platform, into the analog signal at the output of the load cells.
The sensor transmits a load signal to the weight indicator to the microprocessor terminal with subsequent output of the result to the unit display.
reference. Modern models of electronic scales are equipped with access to external recording devices, such as a computer, printer, etc.
Products based on voltage sensors are more advanced. Even the simplest models of such scales can display the weight with an accuracy of hundreds of grams.
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