Bourdon tube for manometer or pressure measurer - is formed from deep-drawn material, e.g. brass, to produce different cross=sections according to desired pressure measurement ranges

摘要

A manometer tube spring consists of deep-drawn material. The head or end (4) formed during drawing provides the closed end of the tube spring (3) inside the pressure measurement device (1). The tube spring has different cross-sections according to the measurement range required with identical initial shape, size and material thickness. The wall thickness increases internally, pref. conically, towards the base. USE/ADVANTAGE - Manometer, vacuum meter or mano-vacuum meter. Simplified and hence improved for mass prodn.