In medical and other studies, even a hundredth of a fraction of a component plays a significant role. It is for the maximum possible accuracy of weighing that laboratory electronic scales are used. This device is indispensable in the preparation of various chemical mixtures, as well as in working with precious metals. Consider the most popular models of digital equipment, its features and user reviews.
General definition
Electronic laboratory scales are classified as high-precision equipment that complies with GOST, which has passed the relevant tests and control checks. With the widespread introduction of innovative technologies, the functionality of weighing mechanisms has also expanded significantly. Now, on these devices, you can calculate the quantitative content of the components in the mixture, taking into account its total mass, and manually enter information on the percentage of substances.
In addition, useful options are provided for saving data, adding up several stages of weighing, adjusting units of measurement, printing out the final information on a printer, automatic calibration, and more.
Varieties
According to the principle of operation, the equipment is divided into 2 types: mechanical and electronic laboratory scales. The second type of devices wins in terms of ease of use and wider functionality, having the highest possible accuracy. Mechanical analogues also have their advantages - they do not require electricity, they have a simple design and an affordable price.
According to the accuracy class, the devices under consideration are divided into four categories, and the higher the maximum weighing limit, the more accurate the scales. The main functions of the equipment: automatic calibration, changing weighing modes, tare accounting, storing information about the manipulations performed, remote control.
Models VSL-600.1A and VK-1500
VSL-600.1A - domestic electronic laboratory scales, the price of which varies within 60 thousand rubles. Produces their company in St. Petersburg. The model is used for work in the scientific and technical departments of industrial fields. The device has a special accuracy class ("1"), LEL - 60 g, division - 0.0001 g. The device is powered by a 12 volt battery. Process control is carried out using a liquid crystal monitor.
The body part of the equipment is made of plastic, the working platform is made of stainless steel. The model has the function of switching to four weighing units, a counting mode, a special hook for hydrostatic measurement of large elements. Each new added component is taken into account by a separate indicator, the built-in bubble level allows you to set the device in accordance with the horizon.
Below, for comparison, the VK-1500 modification parameters are listed:
- Accuracy class - 4.
- MPV - 0.2.
- Division - 10 mg each.
- Power - 9 V.
- Type of power - 220 V.
- Cost - from 18 thousand rubles.
Modification AND HR
This series of laboratory electronic scales of the 1st accuracy class, the price of which is about 70 thousand rubles, is produced by a Japanese company. Key equipment parameters:
- NIP - 60 g.
- MPV - 0.01 g.
- The stabilization period is 2.5 seconds.
- Temperature operating conditions - from 5 to 40 degrees.
- Divisions - 0.1 mg.
The model is distinguished by a stylish design, convenient housing design, operational printing of the progress report. The screen and keyboard of the device are protected against moisture, there is an option to count the same elements by the weight of one of them, the guarantee is 5 years.
Ohaus DV 114C
This equipment belongs to analytical laboratory electronic scales. The device is manufactured in Switzerland, used in professional laboratories for any purpose. The monitor is equipped with a consumer support program, the scales have a device responsible for the level of installation, and a high protective case is provided. The device allows you to register multiple users using a security password from unauthorized access.
Parameters:
- Accuracy - 1st grade.
- Calibration - automatic type.
- The indicator of NVP is 110 g.
- Division - 0.1 mg.
- The average price is 135 thousand rubles.
Electronic laboratory balance CAS
This equipment is manufactured in South Korea, equipped with a membrane keyboard, a liquid crystal monitor, and has a strain gauge measurement format. The platform is made of stainless steel, the body plastic part is equipped with a protective casing. The type of power supply for the balance is from the mains or the built-in battery, which provides up to 80 hours of operation. There is an automatic shutdown mode during breaks during operation.
Specifications:
- Accuracy class - 4.
- Thermal mode - range -10 ... + 40 .
- Weight - 1100 g.
- Dimensions - 250/200/80 mm.
- Discretization of divisions - 0.05 g.
- Units - grams, ounces, carats, pounds, tail.
- Automatic zeroing and troubleshooting.
- Backlight - available.
VLR-200
Laboratory electronic scales, accuracy class 2, are used for accurate weighing of components during various industrial studies and analyzes. A domestic-made device works on the principle of leveling the moments that are created by cargo and overhead weights. The design of the unit is a base with two bowls and an equal-arms rocker. The accuracy of the reference and the acceleration of the process provides a wide range of scales and the presence of dividing devices.
Parameters:
- The working range is 0-100 mg.
- The division of the scale is 0.15 mg.
- The average deviation is 0.05 mg.
- The diameter of the cup is 70 mm.
- Type of power - 220 Volt network (50/60 Hz).
- Dimensions - 405/310/445 mm.
- Weight - 12 kg.
Other popular analogues
Below is a list and brief description of laboratory electronic scales from other manufacturers:
- Startorius TE612. Division - 0.01 g, weighed limits - 0.5-610 g, accuracy class - 2, design - round open bowl.
- VIC-200D5 (Acculab). The division index is 0.05 g, the working limit is 0.1-200 g, the design is a bowl with wind protection, an LCD with clear controls, power is a 9 V battery.
- Shinko XFR-205DRE. Division prices - from 0.0001 g, accuracy class - 1st special, automatic calibration system, LCD display, aluminum case, mode of summing up the results.
- Kern-572. Division - 0.01-0.1 g, power - battery or via a network adapter (230V / 50 Hz), digital interface, dimensions - 165/230/80 mm.
- Radwag WAX110. Analytical laboratory electronic scales with division parameters from 0.00001 g, accuracy class - the 1st special and round bowl with wind protection.
User reviews
Consumers note that in the modern market, finding suitable electronic scales for specific purposes is not a problem. When choosing, it is necessary to take into account the accuracy class of the device, its additional features and the scope of use. The more accurately you need readings, the higher should be the device class. If you plan to use the scales for various operations, it is advisable to choose models with several measuring units.