Optical pressure measuring arrangement for use in explosive environment, has optical pressure sensor consisting of flexible sensor foil made of cured cholesteric elastomer and hermetically sealed housing provided outside environment

摘要

The arrangement has an optical pressure sensor (1) consisting of a flexible sensor foil made of cured cholesteric elastomer exhibiting a deformation-dependent adjustment of selective reflection bands. The sensor is provided in an environment and a hermetically sealed housing (4) is provided outside the environment. A microcontroller has a firmware with functions of calibration, correction of hysteresis and drift ratio, and energy management, so that measuring result is transferred over interface component and wire-bound or wireless bus system to a signaling or data processing unit. An independent claim is also included for a method for an optical pressure measurement in explosive environment.