DIFFERENTIAL PRESSURE GAUGE INSPECTION DEVICE AND METHOD OF USING THE SAME

• Main Authors: KASHIWAGI AIICHIRO, KAWAI TATSUHIKO, MORITA KATSUHIRO
• Format: Patent
• Language: English
• Published: 30.06.2011
• Subjects: MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To reduce the effect on a reference pressure gauge and a pressure gauge to be calibrated by avoiding large pressure variation in the pressure applied to the reference pressure gauge and the pressure gauge to be calibrated when the supply of a gas is started from a gas supply means. SOLUTION: A differential pressure gauge inspection device includes a bypass channel 5B bypassing and connecting a pair of differential pressure introducing parts between a first connection path connecting an upstream gas outlet part to one differential pressure introducing part provided at the pressure gauge 30 to be inspected and a second connection path connecting a downstream gas outlet part to the other differential pressure introducing part provided at the reference pressure gauge 20. A switch 5 is provided, which freely switches the bypass channel 5B between a bypass state allowing circulation of the gas and an inspection state limiting the circulation of the gas. COPYRIGHT: (C)2011,JPO&INPIT