JJF 1827-2020 《Calibration Specification for Cement Fineness Negative Pressure Screen Analyzers》 Related products

"JJF 1827-2020 cement fineness negative pressure sieve calibrate specification" is the national Measurement technical specification, released on January 17, 2020 and implemented on April 17, 2020. This specification is applicable to the calibrate of cement fineness negative pressure sieve (non-test sieve part), aiming to ensure the accuracy and Reliability of the instrument. The main contents include: Measurement characteristics (such as pressure error of indication, return error, insulation resistance, noise, etc.), calibrate conditions, calibrate items and methods, calibrate result expression and re-calibration time interval, etc. The specification is based on JJF 1001-2011 "General Measurement Terms and Definitions", JJF 1059.1-2012 "Evaluation and Representation of Measurement Uncertainty" and other basic documents, which provides a scientific calibrating basis for cement fineness testing and is widely used in the field of building materials.