Title :
Development of a liquid oxygen density reference system
Author_Institution :
Beijing Res. Inst. of Test Technol., China Nat. Space Admin., China
fDate :
29 Sep-2 Oct 1997
Abstract :
The development of a liquid oxygen density reference system is used in the measurement of liquid oxygen density. The system consists mainly of liquid oxygen container, special purpose thermostat, pressure control device, buoy, evacuation system, electronic balance measurement system, tracking and commanding system of chip microprocessor, and PC. The analysis of measurement uncertainty for the liquid oxygen density reference system indicates that the system error is ±0.02%. In the light of random error possibly resulting from measurements, the measurement uncertainty of liquid oxygen density for the system is ±0.05%. The measurement of liquid oxygen density will be more correct, reliable and convenient for the liquid oxygen density reference system, when compared with sensor of traditional liquid oxygen density measurement
Keywords :
balances; cryogenics; density measurement; measurement errors; oxygen; cryogenics; densimeters; electronic balance measurement system; evacuation system; liquid oxygen density reference system; measurement uncertainty; pressure control device; random error; system error; thermostat; tracking; Containers; Density measurement; Error correction; Measurement uncertainty; Microprocessors; Pressure control; Pressure measurement; Semiconductor device measurement; Sensor systems; Thermostats;
Conference_Titel :
Instrumentation in Aerospace Simulation Facilities, 1997. ICIASF '97 Record., International Congress on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-7803-4167-8
DOI :
10.1109/ICIASF.1997.644677
