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• Design an Opening Force Measuring Device for Balancing Clips

  220-225

  László Rónai

  Péter Zoltán Kovács

  Viktor Gál

  Views:

  129

  This paper deals with the development of a force measuring device to determine the opening force of different types of balancing clips. These elements can be used in the impellers of ventilators to rebalance the rotor. The measuring device contains a commercially available beam type load cell. The data processing is performed by Arduino Nano development platform with a 24-bit sigma delta A/D converter. The device is well applicable to determine the opening force of the clips in different opening distances.

• Development of a Low-cost Pressure Sensor

  33-38

  László Rónai

  József Lénárt

  Tamás Szabó

  Views:

  236

  In this paper development of a pressure sensor has been discussed. The main benefit of this sensor is relatively cheap compared to commercially available ones. The unit contains a beam type load cell and a pneumatic cylinder. The load cell has 4 strain gauges in Wheatstone bridge configuration in order to convert the change of resistance into measurable voltage. The system is well applicable in numerous circumstances, where digital pressure signal is necessary for control or data acquisition.