Examination questions of ordinary glass measuring tools (Volume A)
Name of unit, performance appraisal teacher
I. Fill in the blanks:
1. Liquid has no fixed shape at rest and always tends to move ().
2. In the container, the liquid always occupies the lower space completely, and its shape is determined by the shape of ().
3. At present, there are three methods to verify the ability in China, namely, measurement method, ability comparison method and ().
4. The classification of measuring instruments is basically divided into glass measuring instruments and measuring instruments according to their manufacturing materials.
5. Volume measurement is to measure the quantity of various liquids with a measuring device.
2. Multiple choice questions:
1. Capability comparison method verification has the following characteristics:
(1) has the advantages of simple operation, quick verification and high work efficiency.
(2) Due to the precision of the equipment used, the environment must be in a constant temperature state, and the operation process is complicated.
(3) The capacity value measured by the electric meter is directly engraved on the wall of the electric meter, which is obviously intuitive.
(4) The requirements for environmental conditions are not high, and room temperature is enough at room temperature.
(5) The verification accuracy is high, which can meet the actual needs.
Three. Questions and answers
1. What are capacity verification and capacity calibration?
2. What is the verification cycle? What's the role?
3. What is the basic unit of capacity measurement? What is the unit of use? What is the quantitative relationship between them?
4. Calculation problems:
1. Calibrate the 100 volumetric flask at the constant temperature of 2 1. The average value of the two verifications is 99.83(g), and the table value is 99.695(g). Calculate the error of the indicated value of the volumetric flask and whether it is qualified.
2. How many milliliters is the unit of volume of1cubic decimeter?
Examination questions of ordinary glass measuring tools (Volume B)
Name of unit, performance appraisal teacher
First, fill in the blanks:
1, glass measuring instruments are basically divided into standard measuring instruments and workload instruments, and divided into ordinary glass measuring instruments and special ().
2. The errors of measuring devices are evenly distributed, and its calibration value depends on different devices with different errors, and different () measuring devices are determined by different error sizes.
3. The glass tables commonly used in the work table are (), (), (), () and () commonly used in laboratories.
4, for small capacity, the error of () used in the measured value comes from the residual liquid, that is, the liquid on the inner wall of the measuring device.
5, scale measurement method, at present, only verification and calibration () the workload is big.
Second, multiple-choice questions:
Weighing method is to measure the capacity of the instrument by weighing the mass, which has several characteristics ()
A, high working efficiency, less time to use measuring equipment, simpler, and can verify measuring instruments with large capacity.
B, due to the use of precision equipment, the environment must be constant temperature, and the operation process is complicated.
C, due to the high precision of the balance and weight, the reliability of the verification results can be guaranteed.
D, weighing method is only used for the calibration of standard gauge and workload gauge, and the allowable error is less than 0.005ml.
E, the measurement method adopts distilled water, so the measurement error is small.
Third, question and answer:
1. What's the difference between the standard scale and the workload scale?
2. How many methods are there to verify the capacity of glass measuring tools? What is the principle? What are the possible causes of the error?
3. How to read the liquid level correctly? Where is the reading position on the surface of the aqueous solution?
Fourth, the calculation questions:
1. When the ambient temperature is constant (< 24.5℃), the single-line pipette is calibrated as 1.0ml, and the twice average weighing value is 0.9952(g), and the look-up table is 0.996 18(g). What is the indication error of this pipette?
2. The capacity units of 1 liter and1cubic decimeter of water are converted into legal units of measurement. What is the sum of the two?
⑵ Is there any software about measurement management system management? Who can give me an idea?
There is software that can do this. I suggest you take a look at the measurement management information system of Beijing Guolian Enterprise Management Center.
The software is similar to the management of measuring instruments, but it covers the functions of measuring process management, measuring demand management, system analysis and improvement.
Personally, I think the measurement management system is a scientific measurement management method. In fact, the software is not a management-oriented measurement management system, but the business process and core function points of the software designed according to the management ideas of the measurement management system. The core purpose is to optimize enterprise management process, improve work efficiency and provide scientific and favorable data support for management.
The measurement management information system made by Beijing Guolian Enterprise Management Center is professional. This company is a consulting company of measurement management system, with strong professionalism, and its software is used by many large manufacturing enterprises. The abstract software is introduced as follows:
Metering management information system (MMIS) takes ISO 100 12:2003 metering management system requirements as the design guiding ideology, metering equipment management as the core basic application, and metering demand management as the main line running through the whole metering business. MMIS is based on standardized and scientific measurement equipment management, which helps enterprises to improve measurement process management.
After years of customer application, MMIS system integrates the best business practices of leading enterprises in tobacco, steel, nonferrous metals, ports, machinery manufacturing, biochemistry and other industries, and is a mature product widely used in the market. The system covers a series of business processes that are deeply integrated with the actual business of enterprise measurement, such as measurement equipment management, equipment verification, certificate management, measurement process management, measurement demand derivation, system file management, measurement management system analysis and improvement, and data intelligent analysis.
MMIS is not only a software system, but also a management assistant tool, which makes our measurement management more standardized, streamlined and refined, comprehensively improves the overall efficiency of enterprise measurement management and maximizes product quality. Of course, the MMIS system itself also contains many management concepts, operation modes and operation processes that represent the best practices of the industry, which can enable enterprises to carry out measurement management at a higher level faster and provide perfect data support for enterprises to establish a product quality traceability system.
facility management
Automatic reminder of equipment expiration-to avoid missed inspection of equipment;
Clear equipment status management-all status management, such as in use, out of use, restricted use, reuse, maintenance, scrapping, transfer, verification, pending confirmation and sealing;
Tracing the historical information of equipment-tracing the historical information of verification, measurement confirmation, maintenance, re-debugging, transfer, scrapping and stopping use;
Batch generation of verification plans-verification plans can be generated according to the batch of departments;
Automatic distribution of verification plan-each department can inquire about the equipment that needs to be submitted for inspection by itself;
For the verified equipment, turn over the accounts in batches-for the verified equipment, you can fill in the verification information in batches;
Automatic adjustment of effective date-the system will automatically calculate the effective date of the equipment and automatically adjust the verification reminder time;
Comprehensive statistical analysis of data-weekly inspection rate, qualified rate, controlled rate, ABC classification statistics, etc.
Statistics and prediction of verification costs-statistics and analysis of verification costs in equipment history, and prediction of future costs according to future equipment verification plans;
. . . . . .
Measurement requirements output and measurement process management
Measurement demand export-take the key control points of production and operation as the main line, set the relevant parameters of process demand and equipment demand, and automatically generate the Measurement Demand Export Table.
Altitude control account —— Establish altitude control account, including parameter range, allowable error, process specification, measurement purpose, uncertainty, monitoring specification, verification traceability and other information, which can be freely added, modified, deleted, queried and printed.
Validity confirmation of measurement process-set the alarm of verification validity period, automatically count the validity period and remind users to confirm the validity period, and automatically generate a detailed list, which can be classified, queried, exported and printed.
Verification (monitoring) history-automatic production verification (monitoring) history and classifiable query history.
. . . . . .
System file management
Provide standard templates-provide standard templates for system documents to help enterprises transform system requirements into their own management systems;
Top-down file structure-the establishment of the system file of the system adopts a top-down vertical structure, which meets the system requirements;
The release process is clear-the release of documents must be reviewed;
Enjoy the inside of the enterprise-remote upload, quick retrieval, online browsing and support download;
Knowledge management platform-form the knowledge base of enterprise measurement management, and encourage employees to enjoy and learn knowledge.
External supplier management
Strictly check the external suppliers, and only after passing the review can they become qualified external suppliers of the enterprise;
Form an external supplier account to facilitate daily work management;
System analysis and improvement functions. . . . . .
⑶ How to define and distinguish testing equipment from production equipment and measuring instruments in the quality system?
Starting from ISO900 1:2000: 2000 quality management system, the production equipment, testing equipment and measuring instruments have been repositioned.
First of all, we need to know what production equipment is, that is, a set of facilities, equipment and services necessary for the operation of the modified infrastructure: infrastructure: organization > organization (3.3. 1). In the quality management system standard, 6. 1 Infrastructure stipulates that the organization shall determine, provide and maintain the infrastructure needed to meet the product requirements. Where applicable, infrastructure includes: a) buildings, workplaces and related facilities; B) Process equipment (hardware and software);
C) Support * * * (such as transportation or communication).
As can be seen from the above, infrastructure includes all the facilities needed for production and service, and the previous statement that production equipment was put forward separately was cancelled. The purpose is that the automation degree of production equipment is constantly developing, and many production equipment are equipped with detection systems, including detection equipment.
Second, the management methods of infrastructure
It mainly involves three aspects: 1, regular maintenance; 2. Damage repair; 3. Regularly determine whether the process capability can be met.
Three, about testing equipment and measuring instruments
In the quality management system standard, 7.6 the control mechanism of monitoring and measuring devices shall determine the monitoring and measuring devices to be implemented and the required monitoring and measuring devices to provide evidence for the products to meet the determined requirements.
This standard classifies the original measuring instruments as "monitoring and measuring devices". So, what is a monitoring device? What is a measuring device?
In the most popular words, the detection equipment, measuring tools and instruments that directly detect products are all monitoring devices, which everyone can understand. It is a measuring device that indirectly controls the process without contact with the product, in other words, it is an instrument that continuously monitors the production process equipment, such as pressure gauge, thermometer, flowmeter, etc. , installed on devices, some of which are available when purchasing devices.
Four, monitoring and measuring device management method
In order to ensure the validity of the results, when necessary, the measuring equipment shall: a) be calibrated or verified at specified time intervals or before use according to the measuring standards traceable to international or national standards. When the above standards do not exist, the basis for calibration or verification shall be recorded; B) Adjust or re-adjust when necessary; C) being identified to determine its calibration status; D) Prevent adjustments that may invalidate the measurement results; E) Prevent damage or failure during handling, maintenance and storage; In addition, when it is found that the equipment does not meet the requirements, the organization shall evaluate and record the effectiveness of previous measurement results. The organization shall take appropriate measures for the equipment and any affected products. Records of calibration and verification results shall be maintained (see 4.2.4). When computer software is used to monitor and measure the specified requirements, its ability to meet the expected purpose should be confirmed. It should be confirmed before the first use, and then if necessary. It can be seen that their positioning is different and their management methods are different.
(4) Who can tell me how to establish a measurement management system and what measurement management program documents should be established?
Establishing measurement management system is a very important task for many enterprises after quality management system and environmental management system. This system plays a more and more important role in improving product quality, saving resources, reducing emissions and safe production, which directly or indirectly affects the improvement of economic benefits and core competitiveness of enterprises. This measurement management system is established according to the Requirements of Measurement Management System for Measuring Process and Measuring Equipment (GB/T9022-2003/ISO10012: 2003) issued by the General Administration of Quality Supervision, Inspection and Quarantine on June 5, 2003+February 6, 2004. At the beginning of 2005, domestic enterprises from all walks of life began to carry out corresponding audit work according to this standard. The auditing organization is the Chinese enterprise measurement system certification center, and the branches of the center all over the country are responsible for on-site auditing, and the center is responsible for auditing materials and issuing measurement management system certificates. Certificates are divided into three levels: AAA, AA and A. Enterprises can establish systems and obtain corresponding certificates according to specific conditions and standards. The standard "Requirements of Measurement Management System for Measurement Process and Measuring Equipment" includes: overall requirements, management responsibilities, resource management, measurement confirmation and implementation of measurement process, analysis and improvement of measurement management system. The definition of measurement management system is a set of interrelated or interactive elements necessary to complete measurement confirmation and continuously control the measurement process. The system consists of the designed measurement process control, measurement confirmation of measuring equipment and necessary support processes. The measuring process in the system should be controlled and the measuring equipment should be confirmed. When the enterprise just established the measurement management system, due to the lack of relevant experience, it is difficult to start and make a difference in practical work. This paper mainly introduces the key work to be done in establishing measurement management system, including organization management framework, system documents, personnel training, classification management of measuring equipment, identification of key measurement processes, system audit and monitoring, so as to help various enterprises such as machinery manufacturing, petrochemical industry, metallurgy and medicine to establish measurement management system. I. Structure of organizational management The organizational management structure of the measurement management system is the foundation and the most important work for establishing and implementing the measurement management system. Enterprises should establish an internal measurement management network, with clear levels and clear responsibilities from top to bottom. System promoters should include top leaders, management representatives, department heads, special measurement managers, key measurement process operators, product inspectors, etc. It is particularly important for enterprises with weak measurement management, which requires people at all levels to attach importance to it ideologically, make clear their requirements, perform their duties and play an active role in the system operation. Two, the preparation of system documents is the embodiment of the measurement management system, and it is the basis for the implementation of the measurement management system. According to the management status of the enterprise, according to the standards and relevant laws and regulations, the measurement management system manual, measurement management system program files, control specifications of key measurement processes, operation specifications of large or precision measuring equipment and calibration methods of measuring equipment are compiled. In the process of compiling documents at all levels, attention should be paid to the integration and compatibility with quality management system, environmental management system and other systems, such as document control, record control, human resource management and training control, internal audit, management review, corrective and preventive measures, inspection specifications, etc. , according to the requirements of the quality management system. Three. Personnel training The personnel included in the measurement management system include measurement managers and measurement operators (including measurement equipment verification/calibration/verification personnel, raw material inspectors, semi-finished product inspectors, finished product ex-factory inspectors, production process monitoring personnel, other analysis and testing personnel, etc. ). The training content should include the Requirements of Measurement Management System for Measurement Process and Measuring Equipment (GB/T19022-2003/ISO10012: 2003), the Manual of Measurement Management System officially promulgated by the enterprise, the program files of measurement management system and all the documents related to the measurement process. Training forms can be divided into internal training and external training. Training methods can be classroom theoretical lectures, on-site practice demonstrations, etc. We should pay attention to the combination of theoretical knowledge and practical work to achieve "actual combat." It is necessary to clarify the training and assessment requirements, do a good job in theoretical examination and practical operation assessment, and achieve "integration of notification" to improve the measurement awareness and measurement ability of personnel at all levels. Four. Classification management of measuring equipment There are many kinds of measuring equipment in an enterprise. If it is managed in a unified mode, it will inevitably consume huge manpower and material resources, and the effect may not be good, so it is difficult to effectively play the corresponding role of metering equipment management. Due to the different application occasions and measurement parameters of various measuring equipment, classified management can be implemented for measuring equipment. The classified management of measuring equipment is a weak link with the largest workload and the most difficult management in the implementation of enterprise systems. In practical work, according to the use place of measuring equipment, the technical requirements of measuring parameters and the relationship with product quality, the classification management of A, B and C can be carried out. The classification principle is: 1. A measuring equipment, including those compulsory by the state, is mainly used for trade.
5] What are the verification steps of measuring equipment?
The verification of measurement ability is to determine its detection ability through the comparison between laboratories. The so-called inter-laboratory comparison is to organize two or more laboratories to test or determine the same or similar samples according to the pre-specified conditions and evaluate the results.
The capability verification plan includes six types: measurement comparison plan, inter-laboratory test plan, split sample test plan, qualitative plan, known value plan and partial process plan. When certification bodies, statutory bodies and other organizations apply competence verification in the field of testing, they usually adopt inter-laboratory testing plans. These steps are:
1
Capability verification scheme design
2
sample preparation
three
Capability verification operation
four
Statistical processing of capability verification data
five
Capability verification result report
[6] Measurement management system software