Is the accuracy level, not the type, thank you all
Grade A is one of the precision pressure gauge American Standard ASME B40.1 provisions, equivalent to our standard 1 level (basic error limits for the full range of + 1%)
Accuracy class:Under normal use conditions, the degree of accuracy of measurement results of the instrument called instrument accuracy. The reference error is smaller, the instrument accuracy is high, and the reference range of error and instrument, so the use of the same accuracy of the instrument, often take the compression range range, so as to reduce the measurement error. In industrial measurement, in order to facilitate the representation of instrument quality, usually with the degree of accuracy to represent the accuracy of instrument. The degree of accuracy is maximum error of the reference is removed, and a percent sign. The degree of accuracy is an important indicator of the quality of the instrument. The instrument rating industry in China is divided into seven grades 0.1,0.2,0.5,1.0,1.5,2.5,5.0, and sign in meter scale or on the nameplate. The instrument used is called precision accuracy.Pressure meter accuracy level: 0.1, 0.16, 0.25, 0.4, 1, 1.5, 1.6, 2.5, 4, precision digital pressure gauge, and 0.05.By the way, "grade a" refers to the quality grade of this pressure gauge (Grade A or class a) and does not refer to the accuracy grade.
Pressure gauge accuracy class grade A, equivalent to 1 of the standard in our country, is a medium precision level of pressure gauges. Pressure meter accuracy level: 0.1, 0.16, 0.25, 0.4, 1, 1.5, 1.6, 2.5, 4. Among them, 0.1 is the lowest precision level, and the 4 is the highest precision level.A pressure meter is an instrument that measures and indicates higher than the ambient pressure with an elastic element as a sensitive element. It is widely used in almost all industrial processes and research fields. In the heat pipe network, oil and gas transmission, water supply system, vehicle repair and maintenance shop, and other fields can be seen everywhere. Especially in the control and measurement process, because the elastic sensitive element of mechanical pressure gauge has the characteristics of high mechanical strength and convenient production, the mechanical pressure gauge is widely used.
