| Calibrated Device |
(1) Comparison method/ Sonic nozzle: Turbine flowmeter, Positive-displacement flowmeter, Ultrasonic flowmeter, Mass flowmeter, Orifice flowmeter, Differential pressure flowmeter, Venturi tube flowmeter, Sonic nozzle, Velocity based flowmeter, Laminar flowmeter, Vortex flowmeter, Special designed gas flowmeter (2) Comparison method/ Circulation: Turbine flowmeters, Rotary meters, Ultrasonic flowmeters, Vortex flowmeters |
|---|---|
| Range |
(1) 15 m3/h to 12000 m3/h (@1 atm，23 ℃)
(2)125 m3/h to 110000 m3/h (@1 atm，23 ℃) |
| Uncertainty |
(1) 0.17 %
(2) 0.27 % |