| Calibrated Device |
Sonic nozzle, Thermal mass flowmeter, Differential pressure flowmeter, Laminar flowmeter, Piston-based flowmeter, Variable area flowmeter, Turbine flowmeter, Positive displacement flowmeter |
|---|---|
| Range |
(1) Bell prover [primary standard]：(10 to 1000) L/min |
| Uncertainty |
(1) 0.07 % to 0.09 % (2) 0.10 % to 0.13 % |