Nominal diameter (DN) | Common flow(Q3)m/h | Boundary flow(Q2)m/h | Minimum flow rate(Q1)m/h | LCD maximum reading | LCD minimum reading | |
15 | 2.5 | Q3/Q1≥100 Q2/Q1= 1.6 | 99999.9m | 0.1m | ||
20 | 4.0 | 99999.9m | 0.1m | |||
25 | 6.3 | 99999.9m | 0.1m | |||
32 | 10 | 99999.9m | 0.1m | |||
40 | 16 | 99999.9m | 0.1m |
Nominal diameter(mm) | 15 | 20 | 25 | 32 | 40 |
Allowable leakage(m3/h) | 0.010 | 0.015 | 0.020 | 0.200 | 0.100 |