Scales for gold as they call it. How to choose jewelry scales. Hydraulic or pneumatic

Any jewelry workshop, any pawnshop needs to have electronic scales. The main purpose of jewelry scales in a pawnshop is to weigh precious metals and stones in laboratories, workshops and stores. In addition, jewelry scales in a pawn shop can be used to determine the weight of items with a high degree of accuracy. Jewelry scales are subject to increased requirements for measurement accuracy. Jewelers and pawn shop employees constantly use scales when working with precious metals and gemstones. Jewelry scales must be able to weigh objects in the measures accepted by jewelers: carats, grams, ounces. Weighing of precious metals, jewelry and other household items made of precious metals and precious stones, scrap and waste from them is produced on scales that provide the necessary weighing accuracy:

gold, platinum, palladium in the form of ingots, semi-finished products and products: with a weight of up to 1 kg - 0.01 g; with a weight over 1 kg - 0.1 g;

gold, platinum and palladium in the form of scrap - 0.1 g;

silver in the form of products - 0.1 g;

silver in the form of ingots, semi-finished products and scrap - 1.0 g

The permissible error limit of the scales used should not exceed the values ​​​​defined by GOST.

What to consider when choosing scales

When choosing scales you need to know:

How much are you willing to spend on purchasing scales?

The division price - or this term is also called the discreteness of the count and is denoted by the letter - d. Both definitions are equivalent terms. Here you need to keep in mind that not a single model of scales can do without specified parameter, it is he who determines the weighing accuracy. The lower the division value, the higher the accuracy of the scale.

The highest weighing limit is the upper limit of the measurement range, or simply put, it is the mass that the scales are able to measure. NPV - important characteristic any scales. The recording of the LEL values ​​is indicated in the documentation of the scales or on their body. If you try to weigh a load heavier than the LEL, the device will most likely display either an incorrect weight or an error message. Often the NEL value for scales is the most important characteristic.

The lowest weighing limit is the lower limit of the measuring range or the minimum mass that the scale can weigh.

Type of scale calibration - the standards stipulate that scales with divisions of up to 1 gram must be calibrated with a weight. In this case, the calibration process can be external (i.e., calibrated with an external weight or several weights) and internal (i.e., the internal mechanism of the scale allows calibration with a built-in weight; in this case, built-in calibration is divided into self-calibration, where the scales themselves determine the calibration time and do not require outside human assistance; and automatic calibration differs from self-calibration in that outside help a person is required for the task of the interval of calibration processes).

Convenience: A number of models have a modern graphic display with prompts that allow you to use all software features without special training. Moreover, in some new models the height of the digits reaches 16.5 mm. Almost all models of this level have full package standard weighing programs: taring, selection of weighing units, quantity counting, summation of samples

The cost of scales also depends on the manufacturer. There are many manufacturers of laboratory scales. The most famous in Russia trade marks: Shimadzu, CAS, Shinko, OHAUS, Kern, AND, Sartorius and Mettler Toledo. From Russian manufacturers - Vesservice and Gosmetr.

Verification of measuring instruments is a set of operations performed by the bodies of the state metrological service (other authorized bodies, organizations) in order to determine and confirm the compliance of the measuring instrument with the established technical requirements. Positive results of verification of measuring instruments are certified by a verification mark or verification certificate. Measuring instruments subject to state metrological control and supervision are subject to verification by the State Metrological Service upon release from production or repair, upon import for import and operation. Only certified measuring instruments are allowed to be sold and rented. There are four types of verifications:

primary- produced when scales are released from production or repair or when imported;

periodic- scales in operation are subject to it, the frequency of such verification is once a year;

extraordinary- carried out when operating the scales in following cases: in case of damage to the verification mark (state verifier seal) or loss of the verification certificate, when putting the scales into operation after long-term storage, after re-tuning, in case of a known or suspected impact on the scales or in case of their unsatisfactory operation,

inspection- carried out during state metrological supervision in the presence of a representative of the inspected legal entity

Weighing of industrial products, intermediate products, scrap and waste containing precious metals in quantities of less than 5 percent is carried out on scales with a permissible weighing error of +0.05 percent of the weighed mass.

The weight of diamonds and processed gemstones is determined in carats on scales that provide the necessary weighing accuracy. The weighing error, depending on the mass being weighed, should be:

with a weight of up to 1000 carats no more than + 0.01 carats;

with a weight from 1000 to 5000 carats no more than + 0.04 carats;

with a weight over 5000 carats no more than + 0.08 carats.

Weighing of precious stones in raw materials (except for diamonds) is carried out on scales that ensure the weighing accuracy established technical specifications. (when included, as a rule, carats are the basic unit of weighing)

Some important parameters of the scales

Common models of scales used in pawn shops

Scales(usually this term is used in the UK and Australia, "measuring device" in South Asia or "scale" in the USA) are a measuring device for determining masses object. They are used in many industrial and commercial settings. Products ranging from feather products to tractor trailers are sold by weight. Specialized medical and electronic scales are used to measure human body weight.

Name "scales" comes from a dish on which objects requiring weighing and weights were placed. Oxford Dictionary in English gives this definition: “Weighing device. A bowl or two bowls and a balancer". Spring scales or spring steelyard measure force by balancing force gravity due to spring force. Counterweight or electronic scales compare masses by balancing the force of gravity and the mass of an object relative to gravity. Any scale, whether counterweight or electronic, can be calibrated to use units of force such as Newtons or units of mass such as kilograms. But a scale with a counterweight or with a traditional pendulum for comparing masses will show the mass correctly even if it is moved to a different (non-zero) gravitational field (but they will not give correct data if they are calibrated in force units). At the same time, the spring scale will correctly indicate the force in different gravitational fields (but won't if they are calibrated in mass units).

Electronic

Microbalances

Microbalances are instruments capable of precise measurements objects of relatively small mass: on the order of a millionth of a gram.

Analytical

Analytical balances are a class of instruments designed to measure small masses on the order of sub-milligrams. The measuring cup of an analytical balance (0.1 mg or less) is located inside transparent case with a door made so that dust does not get inside. Therefore, any air currents in the room do not affect the operation of the scales. This type of housing is often called a protective housing. The use of a ventilated safety housing, which has a uniquely designed aerodynamic surface, allows the creation of a smooth air flow without turbulence, which prevents their vibrations. This makes it possible to measure mass with an accuracy of 1 µg without fluctuations or loss of product. In addition, the sample being weighed must be at room temperature to prevent natural convection from forming air currents within the enclosure and the associated weighing error. A single-pan mechanical balance maintains a consistent response of all useful power, which is achieved by maintaining a constant load on the beam, and thus the fulcrum, by subtracting the mass on the same side of the beam to which the sample is added.

Electronic analytical balances measure the force required to resist the mass being measured, not the actual mass. Therefore, they must have calibration adjustments to compensate for gravitational differences. They use an electromagnet to create a counter force against the sample being measured and output the result by measuring the force required to achieve equilibrium. This measuring device is called an electromagnetic force recovery sensor.

Strain gauge

IN electronic version spring balance, the deflection of a beam supporting an unknown mass is measured using a strain gauge that measures electrical resistance and is length sensitive. The capabilities of such devices are limited only by the beam's resistance to deflection. The results of several auxiliary points can be added electronically, so this method is suitable for determining the weight of very heavy objects such as trucks and railway cars, and is used in modern scales.

Store

This type is used in bakery and grocery stores, when selling delicacies, seafood, meat, vegetables and fruits, as well as other perishable goods. The store type can print labels and receipts, weight, brand/quantity, unit price, total cost and in some cases container usage. Some modern scales Supermarkets print an RFID tag that can be used to track items if they are tampered with or returned. In most cases, these types of scales are hermetically calibrated so that the display readings are correct and cannot be tampered with. In the USA, such devices are certified by the National Conference of Weights and Measurements, in South Africa - by the South African Bureau of Standards, and in the UK - by the International Organization of Legal Metrology.

Mechanical

Manual spring

Manual spring scales measure mass using the distance a spring deflects under load. This contrasts with the balance type, which compares the torque on a lever at a sample weight with the torque at a standard weight using a horizontal lever. Spring scales measure force, which is the tensile-compressive force acting on an object relative to the local force of gravity. They are usually calibrated in such a way that the measured force is translated into mass at Earth's gravity. The object to be weighed simply hangs from a spring or is placed on a platform with a rod.

In spring scales, the spring either stretches (as when weighing in the produce department grocery store) or compresses (as in simple bathroom scales). According to Hooke's law, each spring has a proportionality coefficient, which shows how difficult it is to stretch it and by what distance. A spring of known stiffness is used (see Hooke's law), and the displacement of the spring is measured in any number of different ways to obtain an estimate of the gravitational force associated with the object. Rack and pinion mechanisms are often used to convert the linear motion of a spring into a circular scale.

Spring type has two sources of errors, which are not in the balance: the measured weight varies depending on the local gravitational force (by as much as 0.5% in different places on Earth), and the elasticity of the measuring spring may vary slightly with temperature. When properly manufactured and set up, however, spring scales can be considered legal for trade. To eliminate temperature errors, commercially available spring scales must either have a temperature compensated spring or be used at a fairly constant temperature. To eliminate the effects of variations in gravity, spring scales marketed must be calibrated where they are used.

With pendulum balance

Pendulum scales do not use a spring. This design uses pendulums that act as a balance and are not affected by differences in gravity. Scales of this design are manufactured, for example, by the Scale Company in Toledo.

Hydraulic or pneumatic

Where needed huge pressure For example, to measure cranes, hydraulic force is used to determine the mass. The test force is applied to the piston or diaphragm and transmitted through hydraulic lines to a Bourdon tube dial indicator or electronic sensor.

Lever

Lever scales (also balance, rocker or laboratory) were the first mass measuring instrument. In their traditional form, they consist of a horizontal lever with equal arms called beams, and a scale suspended from each arm. (This construction is related to the fact that the word “scales” is used in the plural). The unknown mass is placed on one pan and a standard measure of mass is placed on the other pan until the beam approaches its maximum possible equilibrium. In precision balances, a massive slider moves along a graduated scale. The position of the slider gives a subtle correction to the mass value. Although technically it is weight rather than mass that is being compared, the weight of an object is proportional to its mass, and weights used in such cases are usually designated in units of mass.

The lever type is used for accurate mass measurement because, unlike spring ones, their accuracy does not depend on differences in gravity, which can vary by almost 0,5% in various places on Earth. A change in the force of the gravitational field caused by the movement of the lever will not change the measured mass, since the moments of forces on both sides of the beam are affected equally. In fact, a lever scale will measure mass correctly even on other planets or on the moon, or anywhere there is constant gravity or acceleration.

High measurement accuracy is achieved due to the fact that the balance fulcrum is essentially frictionless ( the tip of the knife is in the usual way checks). The pointer is attached to a beam, which amplifies any deviation from the equilibrium position. Next, the lever principle is used, which allows the application of a fractional mass to the movement of a small mass along the measuring arm of the beam, as described above. For greater accuracy, buoyancy in air must be calculated, the effect of which depends on the density of the masses involved.

The original form of a lever scale consisted of a beam with a fulcrum in the center. To achieve maximum precision, the fulcrum will consist of a sharp V-shaped rod mounted in a shallow V-shaped bearing. To determine the mass of an object, a combination of initial masses is hung at one end of the beam, while an object of unknown mass is placed at the other end. Because of their high precision operation, center beam balances are still one of the most accurate instruments available and are commonly used for calibrating weights.

Some mechanical lever scales also use a dial (with counterbalancing weights instead of springs), a hybrid design with the advantages of balancing accuracy and easy-to-read results.

Scales are used in many areas of life. There are many types of these devices, differing in parameters, characteristics and design. The modern range of devices is diverse. But to choose the right scales, you need to familiarize yourself with their types.

Definition

What are scales? This is a device that allows you to determine the mass of an object. Usually they weigh food, parcels, and building materials. Each device has its own purpose, so it may differ from others. Lever scales are considered the first scales. Their appearance and the weighing method could be different, but the principle is the same.

The most famous are the cup ones. The product is placed in the container, and a reference load is placed on the other side. Thanks to the balancing it was possible to set the mass. Now releasing different types scales Each of them is used in a specific industry, so they differ in characteristics.

Mechanical

According to the mechanism, devices are mechanical, electromechanical and electronic. The former operate using lever system and cargo. Mechanical scales are considered very convenient to use. The information is shown by an arrow that is connected to a lever system.

Mechanical scales are the most popular. Their advantage is considered low cost. But such devices require proper maintenance, since without lubrication, cleaning and adjustment, the device will not work normally.

Electromechanical

The weighing procedure on such devices is performed through the interaction of a system of levers with weights. The weight will be shown by the electronic device. The advantages of the devices are that they are easy to read, but the mechanical elements quickly deteriorate. But restoring the device is not so simple.

Electronic

Electronic scales are considered the most modern and easy to use. The devices have an unusual weighing mechanism: the sensor sends a load signal to the indicator. If you follow the rules of use, the device will last for many years.

The main requirement is to comply with the weighing restrictions, that is, you do not need to exceed the weight. Otherwise the sensor will break. Among the advantages of the devices are ease of weighing and reliability. The device allows you to calculate the amount based on the price and weight of the cargo. Electronic scales are the most resistant to mechanical stress and platform displacement. But there are also disadvantages - high price sensor and the difficulty of replacing it.

Trading

What are commercial scales? These are devices necessary for the sale of goods. Scales for weighing products will help you trade competently. For this activity we use the following types devices:

• packaging;
• commodity;
• for counter trade;
• for self-service stores;
• scales with printed labels.

Such devices have displays, the number of which can be up to 6 pieces. They are located either on the case or on a separate rack. These types of scales are multifunctional and have a beautiful design. With them, calculations are performed quickly.

Types of commercial scales

All types of commercial scales include a two-sided display so that the seller and buyer can see the weight of the goods. These devices are among the most popular. There are the following types:

• counter units calculate the cost of an item when the price per kilogram is entered;
• For self-service stores, scales are also produced that mark goods and print receipts with the indicated cost and weight;
• packaging scales are used in stores and catering establishments when goods are packaged;
• commodity scales for warehouses - large devices that allow you to weigh cargo in the range of 60 kg - 2 tons;
• scales with label printing function: used in self-service stores.

Postal

For execution postal work Scales are also needed. The device allows for accurate measurements, as it is required for weighing parcels, parcels, and letters. The best options are considered to be electronic ones, which have a high cost. But they have many advantages:

• a board indicating the weight of the product
• function for selecting discreteness and limits;
• protective properties;
• self-diagnosis system;
• connection to a computer.

For light and small loads there are scales. The equipment allows you to determine grams to precision. There are also devices for large goods.

Industrial

What are industrial scales? These are devices used by logistics companies, post offices, and manufacturing enterprises to measure cargo. Appliances are placed on the floor because they big size. They are designed for weighing cargo in various areas.

According to modifications, they are divided into mobile, shock-resistant, moisture- and dust-proof. No less popular are carriage, crane, monorail, and truck scales. Each device is designed to weigh large items.

Crane

What are crane scales? These are devices that allow you to change suspended loads. Are used similar devices in city ports, metal depots, freight stations and industrial organizations.

Crane scales may differ in weighing accuracy, type of lifting device, and installation method. The devices are designed for loads from 1 to 10 tons. The devices are divided into mechanical and electronic. The latter types are considered the most accurate; many enterprises use mechanical equipment.

Automotive

The devices are designed for weighing cars. They are used in ferrous and non-ferrous metallurgy, food and chemical industries. Also, without them it is impossible to work in agriculture and construction.

Depending on the weighing option, the scales change the car during a full drive. These systems are created without foundations. There are devices for determining the weight of individual parts of a vehicle, and then the results are added up. There are portable vehicle scales that are light in weight, low in price and have dimensions that allow them to be installed anywhere.

Pallet

This type of scale is used for cargo on pallets. These priors are used in warehouses and logistics enterprises. The equipment is compact in size, but it weighs large loads.

For convenience, there is an electronic display that allows you to adjust the controls. The lifting device is a platform equipped with 4 sensors. Pallet scales also have other functions.

Appliances

Various scales are also produced for the household sector. They differ in design, operating principle and quality. Some have a scale pan that makes weighing convenient. They are used for bulk, watery products. In this case, additional capacity is not needed.

Devices with a platform are necessary in measuring loads different parameters. Mechanical and electric scales are used in everyday life. Instruments that allow one to determine the mass of a person are in demand. They are configured up to 300 kg. Some types of equipment have body fat analyzer functions. Diagnostic scales are available.

Medical

There are types special devices, necessary for medical field. They are floor-standing, and also come in mechanical and electronic versions. The first ones work on the basis of a measuring spring. The equipment cannot show the exact weight, so its error is taken into account.

Electronic devices come in different types:

• simple, having a digital display and a mechanical device;
• devices with high accuracy measurements.

Medical devices include devices used for weighing children, which is why they are available in hospitals, clinics, and maternity hospitals. They are compact, have a special shape for comfortable placement of the child, as well as a display. Medical scales with a stadiometer allow you to determine a person’s weight and height.

Laboratory

In laboratory conditions, weighing of substances is also necessary, so special scales are used for this. Laboratory devices are in demand in enterprises, banks, and jewelry workshops. Their advantage is the presence of additional functions. For example, they carry out hydrostatic weighing, which allows you to determine the density of liquids and solids.

Calibration is performed using an external weight or automatically. A special feature of the devices is the presence of several units of measurement. Professional equipment has many functions. Thanks to the variety of types, it is possible to choose scales for specific purposes.

Jewelry

Jewelry making requires high-quality scales that show accurate results. Now there are devices that should have a test pressure of no more than 0.01 grams. This norm indicates the error that may occur when weighing. If the device does not comply with these rules, then it cannot be used.

By law, craftsmen must use only high-quality jewelry scales that meet all standards. They are used only in certain areas. Allows an error of 1 gram, then this technique can be used for weighing scrap metal. Jewelry scales are necessary for measuring stones, but then the error is not calculated in carats.

When weighing crystals between 1000 - 4000 carats, there may be deviations of 0.04 carats. Many modern devices have windproof covers that allow you to maintain settings even when the weather changes. As an additional function, there may be a timer that records dates and other information about the measurement. The presence of memory will allow you to save data that can be transferred to a computer.

Features of kitchen scales

Why do you need kitchen scales? They are needed to determine whether there was fraud in the store. Some products with original packaging do not have the correct weight indicated. This will allow you to determine which product to buy and where.

Thanks to a kitchen scale, you will be able to prepare a dish according to the recipe, because you will need to weigh the ingredients. It is not so easy to determine the amount of ingredients by eye, but the device will be an assistant. Some kitchen scales also work according to foreign methods, so you can change them, for example, in pounds.

You will need equipment if you want to follow a diet. Scales will help you control the amount of food you eat, as this is important for weight loss. There are functions for determining energy value and volume. Which device to choose depends on the purpose and desire.

Types of kitchen scales

It is advisable to purchase electronic rather than mechanical ones, since they allow you to more accurately determine the weight of products. The equipment may have a bowl of different shapes. The material of the bowl varies. They are usually made from plastic, glass, and steel. The first type is considered the best because the material is light and affordable. The devices have different control systems. For your home, it is advisable to purchase scales without buttons. The shelf life of devices is usually set within 1 - 2 years.

When choosing a measuring device, you need to pay attention to the characteristics. If additional functions are not needed, then you should not overpay. In this case, you can purchase a budget option scales It is also important to consider the manufacturer and ease of use. A high-quality device cannot have a low cost.

Important Features

It is necessary that the device is protected from moisture. This property will allow you to maintain the functionality of the scales for a long time. Mandatory characteristic is the presence of a scale reset function. It is considered a convenient property automatic shutdown devices. Even if the owner forgot to turn it off, the scales will do this on their own.

It is necessary to choose equipment with rubberized legs, which will protect against slipping. If steel scales are excellent for other purposes, then plastic ones are needed for the kitchen. They are light in weight and very easy to clean. Many housewives will find the function of switching measures useful.

Rules for using devices

Before use, you must read the instructions for the device. The scales are placed on a level place so that the results are shown accurately. A building level is used for leveling. During operation, the mechanism must be stable. If the installation is correct, the arrow is marked at zero.

For measuring mechanisms no special care required. It is enough to wipe them and treat the parts with oil. Kitchen scales are also washed. The unit must be used only for its intended purpose. It should not be stored or used in a room where flammable liquids or gases are present. It is prohibited to use the scale in areas where there are electromagnetic and electrostatic waves, as the results will be distorted. Disassembly and repair of equipment can only be performed by a specialist.

During the warranty period it is necessary to keep warranty card. It contains the date of purchase, product brand, and store seal. If deficiencies caused by the manufacturer are identified, repairs are carried out at the expense of the seller. The warranty does not apply if the defects are caused by the user.

Spare parts for scales are purchased in specialized stores. Manufacturers offer various parts: buttons, legs, indicators, stickers, sensors. These items will be required in case of repair of measuring equipment.

In order to choose the right manual scales, you need to understand what options are available on the market, what pros and cons this or that model has, and what the principle of their operation is. There are two types of kitchen hand scales: mechanical and electronic. Let's look at each model in detail.

Scales with hook – indispensable assistant in the household. It's practical and handy tool for weighing products. It doesn't take up much space and is easy to use. With its help, you can weigh both piece products: potatoes, carrots or cabbage, and bulk products: sugar, cereals, flour.

The principle of their operation is quite simple. Inside the case there is a rigid spring with an arrow and a metal hook attached to it. A load is hung on this very hook, under the weight of which the spring begins to decompress, and the arrow rises up the graduation scale.

There are two types of mechanical scales:

Linear steelyard. This device for weighing products is a small rectangle with a measurement scale. As a standard, this device can weigh products weighing up to 10 kilograms. The length of one division is 100 grams. This device is preferred by those who do not need high measurement accuracy. Due to the portability of the device, it is convenient to take it with you.

This model is similar to a small portable mirror with a division scale instead of a reflective surface. Mechanical scales of this type can be designed for both small and large weights.

Those in whose kitchen this measuring device has been “living” for a long time have no questions. But those who are thinking about buying a mechanical steelyard should weigh the pros and cons.

pros mechanical hand scales:

1. Small size.
2. Ease of use.
3. Simplicity of the mechanism.

Disadvantages These models can be considered:

1. Weighing inaccuracy.
2. Difficulty working with products weighing less than 500 grams.

Electronic

Manual electronic scales with a hook are new generation devices. Externally, the units resemble old mechanical models, but in terms of functionality they are not inferior to stationary kitchen scales. This tool requires a battery to operate, usually a AA battery. The method of measurement also differs. Unlike the division scale as mechanical models, used in electronic steelyard clock face.

When working with this device, it is extremely important to hold it correctly. You should not grab it by the body if the design provides a holding device. This will affect the accuracy of the measurement.

Undoubtedly, this is a more modern and convenient model. TO merits electronic steelyard include:

1. Compactness.
2. Simplicity.
3. High measurement accuracy.
4. Availability of backlight function.
5. Possibility to select a unit of measurement.
6. There is a memory function that allows you to weigh without taking into account the tare weight.

As for the disadvantages of this device, there are essentially none. Of course the price electronic device somewhat higher than mechanical, but taking into account all the functionality - very democratic.

Conclusion

When choosing a manual steelyard, you should clearly understand for what purposes it will be used. If measurement accuracy is not important to you and you do not need the memory function, feel free to choose the mechanical option. Well, for those who like comfort in the market measuring instruments electronic steelyard – best solution question about choosing scales.

In a variety of areas - from household to industrial - scales can be useful. There are many different types of scales, and they differ not only in size, but also functional characteristics and opportunities. Modern manufacturers offer the purchase of such devices different types, size, design and configuration, depending on the characteristics of their operation and purpose.

Mechanical

Depending on the type of weighing mechanism, all scales are divided into electronic and electronic. The former operate on the basis of interaction and weights, with information displayed by an arrow mechanically connected to a system of levers. In fact, these are traditional and familiar scales to everyone. Types of scales of this type attract attention with a low price. But such devices require proper maintenance, since lubrication, cleaning and adjustment of such devices cannot be done without operations.

Electromechanical

The weighing process in such scales is carried out by the interaction of a system of levers with loads, while information about the load is displayed using electronic device. Such devices are good for easy reading, but the mechanical parts of the equipment wear out quickly. In addition, repairing such scales is not easy.

Electronic

These are the most modern and easiest to use scales. These types of scales have a special weighing mechanism - based on a sensor that sends a signal about the load to the indicator. If you follow the operating rules, such scales can last a very long time. The main requirement is to comply with the weighing restrictions, that is, not to exceed the specified weight. Otherwise, the sensor may be damaged.

Among the advantages of such devices are ease of weighing, reliability and the ability to calculate the amount automatically, taking into account the price and weight of the goods. Compared to the models described above, electronic ones have better resistance to mechanical factors and platform displacement. But there are also disadvantages, which are expressed in the high cost of the sensor and the difficulty of replacing it.

For trade

There are at least 5 types of scales that are used in trade. These include:

• packaging;
• commodity (for warehouse);
• for counter trade;
• for self-service stores;
• scales with printed labels.

The peculiarity of commercial scales is that they are equipped with displays, of which there can be up to 6 pieces. They are located either on the body or on a separate remote stand. Such scales are multifunctional, have a well-thought-out design and allow you to make calculations as clearly and competently as possible.

Types of trade scales

Any trade scales They have a two-sided display so that both the seller and the buyer can see the parameters of the goods being weighed. These are perhaps the most numerous scales according to the classification. The types of scales for trade are as follows:

• Counter-counter devices calculate the cost of goods after data on the price per kilogram is entered, sum up the cost of several purchases, and calculate change.

• For self-service stores, special scales are offered that can mark goods and print receipts (they print a label on which information about the product is displayed - its cost per kilogram, the final cost for the quantity of weighed goods, expiration dates).
• Packaging scales are widely used in stores and catering establishments when packaging individual products. Most models are types of electronic scales that can be used in the industrial sector (for packaging hardware) and pharmacies. Such equipment may have special protection from dust and moisture or double-sided weight indication.
• Commodity scales for warehouses are the most massive devices, capable of weighing goods weighing from 60 kg to 2 tons. They are placed on the floor, and their usable area is related to the maximum weighing limit.
• Scales with label printing function: widely used in self-service stores. Such devices are equipped with a thermal printer that prints self-adhesive stickers. They indicate all the characteristics of the product that the consumer needs.

Postal

Postal scales are distinguished by their measurement accuracy, as they are associated with determining the weight of a parcel, parcel or letter. The most functional are electronic models, which are more expensive. But they have numerous advantages:

• a board displaying the weight of the postal product;
• opportunity automatic selection discreteness and limits;
• good level of protective properties;
• built-in self-diagnosis system;
• ability to connect to a computer.

You can choose postal scales for both light and small items and large items.

Industrial

Exist different kinds scales, which are widely used in industry. Thus, platform devices are specific devices that are used by logistics companies, postal services, and manufacturing enterprises. All industrial scales are placed on the floor and are bulky structures. They are designed specifically to weigh loads in a variety of industries. Depending on modifications, they can be mobile, shock-resistant, moisture- and dust-proof.

No less popular in industry are such scales as carriage, crane, monorail, and automobile scales. All of them are distinguished by their massive design and large platform area, designed for weighing large goods.

Crane scales

The types and types of industrial equipment are pleasingly diverse. For example, crane scales are measuring devices that allow you to measure the weight of a suspended load. The use of such equipment is advisable in city ports, metal depots, freight stations and industrial enterprises. Crane scales are distinguished by weighing accuracy, load receiving device (bucket, hopper), installation method (mobile, suspended), and method of achieving balance. In terms of the volume of measured cargo, crane models are designed for weights from 1 to 10 tons.

Such scales can be mechanical or electronic. More accurate and future-proof latest models, although many enterprises are still equipped with mechanical equipment.

Automotive

These precision instruments designed for weighing cars and road trains. It is advisable to use such scales in ferrous and non-ferrous metallurgy, food and chemical industries, agriculture and construction. Depending on the weighing method, truck scales measure when the vehicle is fully driven. Such systems are built without foundations. Some models are designed to weigh individual vehicle axles, after which the indicators are calculated together.

It is worth mentioning separately about portable vehicle scales. They are lightweight, low cost and thoughtful dimensions, which makes it possible to install them for weighing in any area.

Pallet

This type of scale is designed for weighing cargo placed on pallets. Such devices are widely used in warehouses and logistics premises. These innovative designs are compact, but are used to weigh large loads. Most often, models are equipped with an electronic display, which makes operating the scales easier and more convenient. The load receiving device in such scales is a U-shaped platform into which 4 sensors are built. While easy to operate, the equipment is very reliable since it has no moving parts. IN standard version Pallet scales have numerous additional functions.

Household options

Different types of scales can be used in everyday life, and they differ in various designs and design solutions. Depending on the type of device, they are available with a weighing bowl or with a platform with removable stands. Conventional scales with a bowl are used for weighing bulk, watery products, and the use of additional containers is not required. Instruments with a platform are needed to measure loads or objects of different sizes.

The main types of scales that are used in everyday life are either mechanical or electrical. Devices that allow us to determine our mass are in particular demand. Such devices are designed to weigh up to 300 kg. Some modern models can be supplemented with a body fat analyzer. Deserves special attention

In medicine

There are types of special scales that are used in the medical field. Such devices are always floor-standing mechanical or electronic. In mechanical structures, the main element of the weighing device is in the form of a measuring spring. Of course, talk about high level The accuracy of such scales is not necessary, therefore, when measuring, the error must be taken into account. Electronic devices for medicine are produced in different types:

• simple - that is, with a digital display and mechanical filling;
• increased accuracy.

It is clear that in electronic scales it will still be much higher. The scales used to weigh newborns in hospitals and clinics are also considered medical. Such models have compact sizes, a special platform for the position of the child and a display on which all the information necessary for the doctor is displayed.

For laboratories

Modern types of scales are highly accurate and allow measurements to be carried out in various fields. Thus, laboratory devices are widely used not only in medicine, but also in laboratories of various enterprises, banks, and jewelry workshops. Their peculiarity is that they can have additional functions.

For example, they perform, that is, determine the density of liquids or solids, and carry out dynamic weighing (measurement of non-static objects). Calibration in laboratory scales is performed using an external weight or automatic mode. A distinctive feature of such devices is the presence of several units of measurement. Moreover, professional and expensive models have an expanded package of functions. Thus, it is possible to select scale models for specific purposes and functional features.