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【F12】Low Pressure Gas Flow Calibration System-PVTt

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Calibrated Device

(1) PVTt Method : Sonic nozzle, Laminar flowmeter, Differential pressure flowmeter

(2) Master meter method: Sonic nozzle, Thermal mass flowmeter, Laminar flowmeter, Differential pressure flowmeter, Variable area flowmeter, Positive displacement flowmeter

Range 10 cm3/min to 300 L/min 
Uncertainty  
(1) 0.10 %

(2) 0.11 % to 0.12 %(mass flow rate)、0.11 % to 0.13 % (volume flow rate)