Anton Paar Gmbh

Cnsystems Medizintechnik Gmbh

Rupert Gruellenberger

Falko Skrabal

Peter Kraxner

Gerald Steiner

Harald Schmidegg

Robert Breidler

Juergen Fortin

Alexander Hacker

A rotational viscometer for measuring a viscosity of substances contains a measuring shaft and a hollow shaft which is driven by a drive. The measuring shaft is arranged within the hollow shaft. A measuring body is arranged at one end of the measuring shaft and can be supplied with a sample. A coupling element is provided for connecting the hollow shaft to the measuring shaft. An angle measuring unit is arranged relative to the measuring shaft such that an angular difference and/or a rotational phase difference between the hollow shaft and the measuring shaft can be measured. The hollow shaft and the measuring shaft end opposite the measuring body and protrude into a housing. The coupling element is arranged in the housing, and the housing and the coupling element are connected to the measuring shaft and to the hollow shaft such that the housing is removable from the rotational viscometer.

Rotational viscometer for measuring the viscosity of substances

A method and a measuring device determine the density of liquids. The measuring device has a flexural resonator, at least one sensor for at least one environmental parameter that influences a measurement to be performed and a condition monitoring unit. The measured values from the respective sensor are fed to the condition monitoring unit. The condition monitoring unit has a memory unit with stored forecasts for environmental parameters to be expected in the course of the measurement, and that, by using the condition monitoring unit, on the basis of the stored forecasts and the initial measured values selected for the measurement, it is determined whether the planned measurement can be carried out under the selected trial conditions without any impairment or with a permissible impairment by the forecast changes in the environmental parameters.

Method, device and computer medium for determining the density of liquids

The invention relates to a method and a device for regulating the pressure in at least one inflatable cuff, preferably a finger cuff (), of a blood pressure manometer comprising a plethysmographic sensor device () for detecting a plethysmographic signal PG and a pressure sensor () for detecting a cuff pressure signal BP. According to the invention, two control loops () acting on a differential amplifier () are used to independently regulate different operating parameters, the first, inner control loop () using the cuff pressure signal BP as the first regulating variable, and the second, outer control loop () comprising a regulating device (), preferably a PID regulator, which generates a nominal value SW as a second regulating variable from the plethysmographic signal PG. The differential amplifier () is connected, on the output side, to at least one valve connected to a pressure source (), preferably a proportional valve (), for regulating the pressure in the cuff (). Additional outer control loops (to) can be used to respectively set a parameter of the device to a determined nominal value.

Device and method for controlling the pressure in an inflatable cuff of a blood pressure manometer

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Graz, Austria

Rupert Gruellenberger