Title :
Improvement of pressure generating system for low pressure calibration
Author :
Kojima, Momoko ; Kobata, Tokihiko
Author_Institution :
Nat. Metrol. Inst. of Japan (NMIJ), Nat. Inst. of Adv. Ind. Sci. & Technol. (AIST), Tsukuba, Japan
Abstract :
A calibration system for low pressure below 10 kPa has been developed at the National Metrology Institute of Japan (NMIJ/AIST). The standard is realized with a pressure balance of which the calibration pressure is generated in the bell jar. This low-pressure generating system was first fabricated about a year ago; some improvement has been made to extend the pressure range and also to archive more efficiency in the operation. Main point of the improvement is the refinement of a weight loading system and a pressure control system in the bell jar. The details of the instruments are described in this article.
Keywords :
calibration; laboratory techniques; pressure control; National Metrology Institute of Japan; bell jar; low pressure calibration system; pressure control system; pressure generating system; weight loading system; Calibration; Loading; Monitoring; Pressure control; Sensors; Transducers; Valves; Pressure standard; low-pressure standard;
Conference_Titel :
SICE Annual Conference (SICE), 2011 Proceedings of
Conference_Location :
Tokyo
Print_ISBN :
978-1-4577-0714-8
