What Is a Compact Scale?
A compact scale is a small, compact weighing instrument.
It is a type of electromagnetic weighing instrument that displays the weighed value digitally, and is also called a force-balance weighing instrument. In general, scales with relatively high accuracy (electromagnetic or tuning-fork type) are called “electronic balances” while scales with relatively low accuracy (load cell type), such as scales, are called “electronic scales.”
The difference between a “balance” and a “weighing instrument” is precision. A “balance” is used to weigh relatively light objects, while a “weighing instrument” is used to measure relatively heavy objects.
Uses of Compact Scales
Compact scales are used in the agriculture, food and beverage, education, and precious metals industries.
Compact scales are used in various industries such as agriculture, food and beverage, education, and precious metals.
Specific examples of use are as follows:
- Weighing of fertilizers and pesticides.
- Weighing of foodstuffs and seasonings.
- Experiments and cooking practice.
- Weighing precious metals.
Principle of Compact Scales
Weighing is performed using the force-balance method, which utilizes the principle of leverage and electromagnetic force. When an object is placed on the upper plate and weighed, electromagnetic force is generated in the force coil (a circular permanent magnet inside the coil to generate electromagnetic force) to balance it.
By measuring the amount of electricity generated, the weight of the object is calculated and displayed on the digital panel.
Characteristics of Compact Scale
Because compact scales are small, they are light and portable. Some are small enough to fit in a pocket, making them useful for carrying around and using.
There are also relatively inexpensive products with excellent designs that are used as interior products. Disadvantages include the fact that the digital display may be difficult to see when weighing objects on the scale due to its compact shape, and the battery-powered type cannot be used without the batteries that come with it.
The characteristics of compact scales vary from manufacturer to manufacturer, so it is important to purchase the product that best suits your intended use.
How to Select a Compact Scale
Since features such as maximum weight and minimum display unit vary from product to product, it is necessary to select the appropriate compact scale according to the location and purpose of use.
1. Maximum Weight
Maximum weight refers to the upper limit of the weight that can be measured, and the maximum weight that can be measured differs depending on the product. For general household use, a scale that can weigh 1 to 2 kg is sufficient, but for weighing heavy containers, a scale that can weigh 3 kg or more is necessary.
It is important to consider what you will be measuring in your daily life and select a product suitable for that purpose.
2. Minimum Display Unit
The minimum weight that can be weighed on a compact scale varies depending on the product, which is generally divided into 0.1g, 0.5g, and 1g units.
When measuring lightweight items such as ingredients for confectioneries or medicines, it is necessary to select a product that can weigh in 0.1g increments.
3. Zero Setting
Zero setting, also known as the “tare” function, is a function that displays “og” when something is placed on the scale.
When the zero setting is made with a container on the scale, 0 g is displayed with the object being weighed, allowing only the object to be weighed to be measured. This makes it possible to measure only the weighted object, and also makes it easy to add additional weighing.
4. Ease of Maintenance
Ease of maintenance is another important aspect of a compact scale. If the scale is made of stainless steel or tempered glass, it can be easily wiped clean when dirty. Some products have a removable top plate that can be washed, and various other features are available to keep the scales clean.
5. Ease of Storage
When not in use, some compact scales can be stacked in a special case, while others can be hung on a hook. By considering storage options when purchasing a compact scale, you can make effective use of your workspace.
6. Waterproof Function
If the product has a waterproof function, it can be washed with water in case of contamination, thus ensuring hygienic use.
7. Optional Functions
Another attractive feature of compact scales is that they offer a variety of optional functions. There are products with an auto power-off function that automatically turns off the power, a counting function that counts the number of identical items, and so on. When purchasing a scale, it is important to know what functions you need for your work.