METHOD AND INSTRUMENT FOR MEASURING THE DENSITY OF FLUID MEDIA

摘要

A method and a measuring device measure the density of fluid media with a sensor having a density measuring device. A frequency oscillator with mass balance is used as the density sensor and all components related to the frequency oscillator with mass balance for the oscillation behavior, oscillation excitation and oscillation evaluation, as well as the frequency oscillator with mass balance directly associated with the measuring and sensor electronics, are enclosed in a housing or cartridge. These components are used with the frequency oscillator with mass balance in the cartridge, and/or the frequency oscillator with mass balance together with the cartridge is adjusted or calibrated using measurement standards and adapted as necessary to the specific application. The cartridge with the frequency oscillator with mass balance is releasably or replaceably connected with the measuring device or its base body before the beginning of the measuring operation to investigate the media.

主权项

1. A method for measuring a density of a fluid media, which comprises the steps of:
providing a measuring device having a density sensor, the density sensor having a frequency oscillator with a mass balance, and all components relevant to oscillation behavior, oscillation excitation and oscillation evaluation of the frequency oscillator with the mass balance as well as measuring and sensor electronics directly associated with the frequency oscillator with the mass balance are enclosed in a housing or a cartridge, and/or the components are inserted into the cartridge with the frequency oscillator with the mass balance; adjusting or calibrating the frequency oscillator with the mass balance together with the cartridge with a help of measurement standards and adapted as necessary to a specific application; and forming the cartridge with the frequency oscillator with the mass balance to be releasably or replaceably connected with a remainder of the measuring device or a base body of the measuring device before a start of a measuring operation to investigate the fluid media.