Abstract: The invention relates to an apparatus for processing and analyzing a measurement fluid for measurement in a measurement device, comprising a fluid chamber which is filled by the measurement fluid or through which the measurement fluid flows during operation, an electrically driven ultrasound driver which causes the measurement fluid to vibrate during operation by applying an electrical operating voltage, wherein the measurement fluid, the ultrasound driver, a reflector as applicable and additional layers as applicable are parts of a resonator and of a common mechanical vibration system during operation.

Abstract: The invention relates to a device (1) for FTIR absorption spectroscopy, having an ATR sensor (5) and at least one ultrasonic transmitter (10) for generating an ultrasonic field in the manner of a standing wave. The ATR sensor (5) and the ultrasonic transmitter (10) are connected to a mounting (4) which is provided for attachment in a wall (2) or cover of a reactor (3) and which is set up to hold the ATR sensor (5) and the ultrasonic transmitter (10) so that they freely project into the interior of the reactor (3) in the mounted state.

Abstract: The invention relates to a device (1) for FTIR absorption spectroscopy, having an ATR sensor (5) and at least one ultrasonic transmitter (10) for generating an ultrasonic field in the manner of a standing wave. The ATR sensor (5) and the ultrasonic transmitter (10) are connected to a mounting (4) which is provided for attachment in a wall (2) or cover of a reactor (3) and which is set up to hold the ATR sensor (5) and the ultrasonic transmitter (10) so that they freely project into the interior of the reactor (3) in the mounted state.