| 摘要 |
PURPOSE:To improve reliability and accuracy of a pressure gauge as compared to an ordinary one by providing a pressure gauge with an inflective body to be measured and strain resistors vapor deposited on the inflective body to be measured. CONSTITUTION:The pressure gauge has the inflective body to be measured which is obtained by fixing a central projection part 4 on the lower part 3 of a diaphragm 2 on a base plate 1 and also fixing the end part of a plate spring 5 on a fixing part with a fitting screw 7. Two strain gauges 12a 12d are formed on the upper and lower surfaces of the base end part of the plate spring 5 respectively by vapor depositing a metallic material or a semiconductive material, a strain resistance element, on the upper and lower surfaces of the plate spring 5 on the basis of a required pattern to form strain resistors and then vapor depositing an insulating material on the strain resistors. Thus the accuracy and reliability of the pressure gauge can be improved as compared to an ordinary one. |
