During the 2000kN period, verify the standard force and bending resistance of the standard force measuring instrument, which is 10kN

Description :

During the 2000kN period, check the standard force and anti bending standard force measuring instrument. Product Introduction: 10kNMainly used for the calibration and verification of force measuring instruments and equipment such as material testing machines and presses. It can also be used for measuring, verifying, and calibrating the "force value" of other related instruments, equipment, components, and parts. Its prominent features are reliable data, stable quality, no aging, no wear and tear, and it belongs to a sex measuring instrument. It is an economical, easy-to-use, convenient, accurate and safe measuring instrument. It is a standard force measuring instrument for various quality and technical supervision, metrological testing, scientific research institutes, universities, quality inspection institutions, relevant departments, and enterprises

During the 2000kN period, verify the standard force and bending resistance of the standard force measuring instrument, which is 10kN：

　　1. Purpose

　　In order to effectively understand the usage status of instruments, equipment, reference standards, and standard substances, and ensure the reliability of their calibration status.

　　2 Scope of Application

　　What is the actual application? Equipment, reference standards, and standard substances in the laboratory.

　　3. Inspection content

　　When cows encounter the following situations, they need to be checked during the inspection period:

　　1). Low stability and significant drift;

　　2). Used frequently and for a long time;

　　3). Electronic devices that have not been activated for a long time:

　　4). The storage environment and validity period of reference standards and reference materials.

　　4. Verification method

　　A. Regularly use certified reference materials and/or secondary reference materials for periodic verification;

　　B. During the period of retesting and comparison based on retained samples:

　　C. Comparing devices with the same functionality for periodic verification:

　　D. During the inter laboratory comparison, the following tests were conducted:

　　E. Perform periodic verification using the self calibration program of the Bei self calibration function equipment;

　　F. Other effective methods of funding verification during the period.

　　5. Verification cycle

　　1). Equipment, reference standards, and standard substances with low usage frequency, short usage time, and high stability can be tested once a year.

　　2). For others, the number of inspections can be increased according to the actual situation But not less than 6 months/time.

　　6、 The tasks, reference standards, and reference materials for periodic verification can be found in the periodic verification methods for each equipment, reference standards, and reference materials

　　7、 Verification method during the period

　　The specific period verification methods can be found in the period verification methods of each device, reference standard, and standard substance.

　　Inspection method during the testing machine period

　　Overview (Purpose): In order to understand the status of the testing machine, maintain the reliability of the calibration status of the equipment during the two calibration periods, and reduce the result deviation caused by the stability changes of the instrument, in addition to checking the instrument before and after turning it on, it is necessary to conduct periodic verification between the two calibration cycles of the equipment.

　　2. Basis: GB/T 228.1-2010 and corresponding work instructions

　　3. Technical requirement: What is the relative error of the calculated force value? =I archive measured value I/archive value X 100 force, relative error of the displayed value

　　4. Verify the samples and quantities used:

　　Select steel with tensile strength suitable for the range of this testing machine, and cut several sections from the same steel bar (length meets relevant requirements, quantity can cope with emergencies).

　　5. Verification method: Physical comparison method is used. 5.1 The force test shall be conducted within one week after the testing machine is verified as qualified by the inspector and equipment administrator, and there shall be equipment available

　　During the verification period after 5.2 force measurements, the inspector and equipment administrator conduct force tests, compare the measured data with archived data, and calculate the relative error of the force values

　　JJF1469-2014 (Calibration Specification for Strain Gauge Sensor Measuring Instruments), JJG144-2007 (Verification Regulations for Standard Force Measuring Instruments),

　　JJG557-2011 (Standard Torque Meter Verification Regulations), JJG391-2009 (Load Sensor Verification Regulations),

　　OIML-R60 (GUO International Legal Metrology Organization Technical Standard for Weighing Sensors)

　　The NIM-ZY-LS-CL-035 standard load measuring instrument testing/calibration rules, registered with the China Institute of Metrology, are the preliminary technical standards based on which the current dynamometer indicator instrument testing/calibration is carried out. They have been replaced by the JJF1469-2014 standard.

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