DETECTION OF VIBRATIONS AT THE ELECTRONIC BALANCES WORKSTATION
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DETECTION OF VIBRATIONS AT THE ELECTRONIC BALANCES WORKSTATION - 1

DETECTION OF VIBRATIONS AT THE ELECTRONIC BALANCES WORKSTATION

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DETECTION OF VIBRATIONS AT THE ELECTRONIC BALANCES WORKSTATION - 2

INTRODUCTION Mechanical vibrations are defined as movement of particles of elastic medium in relation to equilibrium point. The particles can spread in both liquid and solid mediums. In industry, it is known that the mechanical vibrations are a co-existing element of a technological process. However the vibrations can also be a phenomenon of random nature, i.e. they can be an effect of exploitation of various machines and devices (e.g. press, saw, means of transport etc.). Vibrations negatively influence human beings and measuring equipment such as balances, scales and mass comparators....

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DETECTION OF VIBRATIONS AT THE ELECTRONIC BALANCES WORKSTATION - 3

VIBRATIONS IN THE WEIGHING PROCESS The main principle of operation of balances and mass comparators (with electromagnetic compensation) is to maintain state of equilibrium. Equilibrium is obtained through generating an electric signal that compensates for weight value of load resting on the load receptor. Figure 1 visualizes the above in a form of a diagram. Principle of operation of balances and mass comparators. In case of model working conditions such system can operate even with resolution of 100 000 000 million scale intervals. Occurrence of ground vibrations results with deflection of...

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DETECTION OF VIBRATIONS AT THE ELECTRONIC BALANCES WORKSTATION - 4

Vibrations at mas comparators and balances’ workplace. Apart from graphic visualization the ambient conditions module of 4Y series balances displays numeric value of currently measured vibrations. The value is presented in the information box along with temperature and humidity values. MYA 4.Y microbalance – ambient conditions module, numeric values. Due to the following 3 factors: specified values of free vibrations, resolution, and permissible weighing instrument errors, the analysis of vibrations must be carried out with regard to the right effective value (rms value) and bandwidth....

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