Why does the new water meter have no accuracy grade and where is the accuracy level of the water meter?
The accuracy level and measurement level of water meter are two concepts. The accuracy grade provides the indication error limit of water meter, and the 2 stage indicates the maximum indication value of water meter, and the error can not exceed 2%. The new procedure has 1 meter water meters, but it must be marked on the water meter. Measurement level is divided by the demarcation of the water gauge and the minimum flow rate to characterize the sensitivity of the water meter. The old rules are graded according to A, B, C and D, and the D level is the highest requirement. New procedures, dosage, process ratio (Q3/Q1) to replace the original level of measurement, the ratio of at least 20 options, the greater the ratio, the higher the requirements, the greater the difficulty of manufacture. The Q3 and Q3/Q1 values of the water meter are determined by the manufacturer according to the market demand, and must be clearly marked on the water meter. When the water meter is checked, the flow point can be selected according to the value indicated on the meter.
- according to the old standard 2 meter measuring habits, from low to high level is divided into class A, class B, class C, class D. Among them, class a water meter tends to be eliminated, B class is equivalent to the new standard R=80 water meter, C clas
The new standard has indeed canceled the ABC level meter before the class, not the so-called a table B scale call, is mainly concerned with the ratio of Q3/Q1 in the water meter dial marked as R-, such as R80, said Q3/Q1 was 80. Then can be used to Q2, Q4 equivalent, specific new standard, say no more.
