A Two-Mode Digital Pressure Meter Equipped With An Automatic Leak Test Using MPX5050gp And MPXv4115vc6u Sensors

Abstract

The calibration process aims to guarantee measurement results following established standards. The purpose of this study is to design an automatic leak test for digital pressure meter in which the function of this device is to measure pressure on the Sphygmomanometer and Suction Pump or other devices that use pressure parameters for measurement. This module uses the Arduino system as control and processing of analog data into digital data to condition the output of the MPX5050GP sensor for positive pressure and MPXV4115VC6U sensor for vacuum pressure, this module uses a 4x20 LCD character display and there is a selection of mmHg and Kpa units with fluctuating resolution 0.25. Also, in this module there is an automatic leak test feature for the Sphygmomanometer, the measurement results obtained an average error of 7.3 mmHg for sphygmomanometer measurements, and for suction pumps less than 1.5 Kpa. From these results, it was concluded that this module can be used for the measurement of devices that use positive pressure and negative pressure