Branch Measurement (Metrology) Measurement is the scientific field that studies measurement and its applications. It is a fundamental and essential discipline, playing a vital role in science, industrial production, commerce, and daily life, ensuring that everything from wristwatches to space satellites functions accurately and safely.

Measurement is not simply the use of rulers or scales. It is a science that studies how to perform reliable, consistent, and comparable measurements anywhere in the world.

• Importance:
  • Science & Technology: Every invention and scientific experiment requires precise measurements to verify the theory.
  • Manufacture: Product quality control ensures that assembled parts fit together perfectly and comply with technical standards.
  • Commerce: Ensuring fairness in buying and selling transactions (weighing, measuring).
  • Law & Safety: Regulations concerning traffic safety, health, and the environment are all based on reliable measurement data.

Main Areas of Measurement

The field of metrology is divided into three main, mutually supportive areas:

• Scientific Metrology:
  • This is the highest level, involving the development and maintenance of basic units of measurement (SI system) and national measurement standards.
  • National standard laboratories (such as NMIJ in Japan, NIST in the US, or VNMC in Vietnam) are responsible for this field.
• Industrial Metrology:
  • Applying measurement principles to industrial production and quality control.
  • This includes calibrating and verifying measuring equipment, and ensuring the accuracy of measurements in the production line.
• Legal Metrology:
  • This relates to legal and regulatory requirements for measurements aimed at protecting consumers, ensuring fair trade, and public safety.
  • Examples include: calibrating electricity meters, market scales, and police speedometers.

International System of Units (SI System)

The International System (SI) is the heart of global measurement. This system is based on seven fundamental units:

1. Meter (m): Measure length
2. Kilograms (kg): Measure mass
3. Seconds (s): Measure time
4. Ampere (A): Measure current intensity
5. Kelvin (K): Thermodynamic temperature measurement
6. Mol (mol): Measuring the amount of substance
7. Candela (cd): Measure light intensity

In 2019, these units were redefined based on fundamental physical constants, providing absolute accuracy and stability, no longer dependent on physical objects such as the international standard kilogram.

Traceability

A core concept in measurement is traceabilityThis means that the results of every measurement must be clearly traceable, through an uninterrupted series of calibrations, to a national or international measurement standard, and ultimately to the definitions of the SI system. This ensures the consistency of measurements worldwide.

Technology and Future Trends

The field of metrology is constantly evolving with advancements in technology:

• Automation: Integrate automated measurement systems into the production line (e.g., coordinate measuring machines - CMM).
• IoT and AI: Utilize artificial intelligence and the Internet of Things to collect, measure, analyze, and optimize production processes in real time.
• Nano-measurement: Developing precise measurement techniques at the nanoscale to support the semiconductor industry and advanced materials technology.

The most widely applied measurement indicators are:

In manufacturing, measurement standards are very strict, adhering closely to international and national standards to ensure quality, accuracy, and safety. The most widely applied measurement parameters include:

• Dimensional Metrology: This is perhaps the most common and important metric in the mechanical engineering, automotive, and semiconductor industries. Measurements include length, diameter, depth, angle, radius, and parallelism.
• Surface Finish/Roughness: Important in industries where friction, durability, and performance are key factors (e.g., engine components, bearings, molds).
• Electrical Parameters: In the electronics and semiconductor industries, electrical measurement parameters such as voltage, current, resistance, power, frequency, and conductivity are very common.
• Temperature and Pressure: These parameters are widely measured in most industrial processes, from chemical and food production to environmental testing of electronic components.
• Flow Rate and Volume: Important in the chemical, oil and gas, and food industries for process control and product quantification. 

The main standards applied

Japan uses a combination of national and international standards:

• International System of Units (SI Units): Japan fully switched to the metric system in 1959, with seven basic units being the meter, kilogram, second, ampere, kelvin, mole, and candela.
• Japanese Industrial Standard (JIS): This is a national standard that sets standards for industrial activities in Japan. It includes requirements for measurement and testing methods for thousands of different products.
• Japan Calibration Service System (JCSS): This system ensures that measurements are traceable to national standards maintained by the National Institute of Metrology of Japan (NMIJ).

Supplier selection Semiki For advice and to purchase genuine measuring equipment, you can consider the following reasons and advantages:

1. We specialize in providing genuine products with clear origins:
   • The most important factor when choosing Semiki is its commitment to distributing genuine measuring equipment from reputable manufacturers (e.g., Japanese brands such as Sato Keiryoki, Hioki, Malcom, Anritsu, Mitutoyo, etc.).
   • They typically provide complete certificates of origin (CO) and certificates of quality (CQ), giving buyers peace of mind regarding the product's origin and quality.
2. A wide variety of equipment types:
   • Semiki typically distributes a wide range of products, serving most measurement needs in various industries (mechanical, electronics, environmental, medical, food, etc.).
   • This diversity allows customers to find multiple measurement solutions at a single point of sale, saving them search time.
3. Excellent technical support and after-sales service:
   • As an authorized distributor or dealer, Semiki typically has a team of engineers who are highly trained in the products.
   • Semiki can provide pre-sales technical consulting services, user guides, and professional after-sales warranty and repair support.
4. Transparent pricing and warranty policies:
   • Buying from official suppliers usually ensures you receive standard manufacturer warranty coverage, as well as more competitive and stable pricing compared to buying through unofficial channels.

Contact Semiki directly: You can find Semiki's contact information (via website or phone number) to request a quote and specific advice.

Website: You can find out more details and send a consultation request via Semiki.com.

Business email: [email protected]

Phone number (Hotline): +84 979 761 016.