Anhui Liu'an Water Meter Test Center passed the special measurement authorization review review

[China Instrument Network Instrument Industry] Recently, Anhui Lu'an Provincial and Municipal Quality Supervision Bureau Joint Inspection Group and three people carried out an on-site inspection and assessment of the metering authorization of the Water Meter Test Center of the Lu'an Water Supply Company.

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After listening to reports on the operation status of institutions in recent years, the assessment team conducted on-site assessments of the testing centers in accordance with the Measurement Authorization Management Measures and the Statutory Metrology Inspection Agency Assessment Standards. During the period, the appraisal team checked the laboratory conditions, reviewed the technical qualifications of the appraisers, the organization's quality manual and related management system documents, and reviewed the institutional technical file and personnel training records, internal audit and management review records, certified original records and certified certificate copies , Verification of measurement standards and traceability of the value of the situation, check the assessment project table, assessment requirements and quality system file comparison table. The assessment team also conducted a blind test on the spot, conducted a technical question and assessment on key technicians, and held a symposium to understand the specific conditions of the operation of the organization.
The appraisal team fully affirmed the achievements made by the company in carrying out the measurement work. It is believed that the inspection center is a statutory metrology verification agency that has obtained the national special authorization. The statutory status is clear, the organization is reasonable, and the management team has a strong sense of quality. The technicians have excellent capabilities, and the internal audit and management review process can ensure that the organization achieves continuous improvement and all evaluation indicators are excellent.
The appraisal team also commended the company for its four highlights in the standardization of quality control: First, the company’s senior leaders have a strong sense of legality and quality, and the organization’s employees have a positive sense of participation, thereby promoting the quality of the organization. The overall development of technology, business, and capacity building; Second, the testing center has a sound organizational structure, can earnestly abide by the responsibilities assigned by the measurement laws and regulations, and has successfully completed all tasks within the scope of authorization; The standard equipment and ancillary equipment are properly configured. The establishment of a table management system standardizes the work flow of the table work, and the operability is strong. Fourthly, the testing center has actively cooperated with the Municipal Bureau in recent years to provide personnel skills training and standards for the county-level water agencies. The instrument's value comparison, meter quality inspection and other work have achieved good social effects. At the same time, the appraisal team also put forward specific rectification opinions and suggestions on certain imperfect items that exist in the system's operating records.
In the final assessment meeting, Deputy General Manager Zhang Juchang represented the company on behalf of the company and thanked the assessment team for their on-site guidance. He also said that this review will be used as an opportunity to complete the metrological authorization as soon as possible according to the rectification comments and node requirements put forward by the assessment team. The rectification work will continue to strengthen institutional construction and management, strengthen personnel training and the deployment of technical forces, follow the principles of fairness, fairness, and openness, and strive to make the water meter testing center a fair scale for water supply measurement in the minds of the broad masses.
(Original title: City Tap Water: Keeping pace with the times, the water meter testing center passed the special measurement authorization review review)

Induction Coils

Induction heating coil is a device that uses the principle of electromagnetic induction for induction heating. It is commonly used for heating metal materials, such as in industrial processes such as welding, heat treatment, and melting. The working principle is to generate eddy currents (induced currents) inside the heated metal through the alternating magnetic field generated when alternating current flows through the coil. This eddy current in turn generates its own magnetic field and interacts with the original magnetic field, causing heat to be generated inside the metal and achieving heating.
The design and application of induction heating coils have the following key points:
1. Induction coil structure: The coil is usually made of conductive materials such as copper or aluminum, and its shape and size are designed according to specific application requirements. It can be circular, square, or other shapes. The number of turns, diameter, and wire diameter of the coil can affect heating efficiency and power output.
2. Frequency selection: The efficiency and effectiveness of induction heating are related to the frequency of use. High frequency (several kilohertz to tens of megahertz) is suitable for rapid heating of thin-walled components, while low frequency (several hundred hertz to several thousand hertz) is more suitable for uniform heating of thick walled components. According to the frequency of induction heating equipment, it can be divided into high-frequency induction coils, intermediate frequency induction coils, ultra-high frequency induction coils, and ultrasonic induction coils
3. Power control: By adjusting the current input to the induction coil, the heating power and temperature can be controlled. This function is usually achieved using electronic devices such as thyristors and inverters.
4. Induction cooling system: In order to protect the heating area from overheating, an induction cooling system may be required, especially during continuous heating operations.
5. Safety measures: Induction heating equipment must be equipped with effective safety measures, including preventing electric shock, avoiding spark splashing, and ensuring good ventilation in the operating environment.
Induction heating coils are widely used in various fields such as metal processing, automotive manufacturing, aerospace, medical equipment, etc., and are one of the indispensable high-efficiency heating technologies in modern industry.

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