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

2020 ◽  
Vol 2 (2) ◽  
pp. 80-85
Author(s):  
Fita Florensa Rooswita ◽  
Triana Rahmawati ◽  
Syaifudin Syaifudin
Keyword(s):  
Negative Pressure ◽  
Digital Data ◽  
Average Error ◽  
Positive Pressure ◽  
Leak Test ◽  
Suction Pump ◽  
Digital Pressure ◽  
Measurement Results ◽  
Pressure Meter ◽  
Selection Of

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

scholarly journals Two Mode DPM Equipped with an Automatic Leak Test Using MPX5050GP and MPXV4115VC6U Sensors

2021 ◽  
Vol 3 (1) ◽  
pp. 1-7
Author(s):  
Fita Florensa Rooswita ◽  
Triana Rahmawati ◽  
Syaifudin Syaifudin
Keyword(s):  
Negative Pressure ◽  
Digital Data ◽  
Average Error ◽  
Positive Pressure ◽  
Leak Test ◽  
Suction Pump ◽  
Calibration Process ◽  
Pressure Calibration ◽  
Measurement Results ◽  
Selection Of

The calibration process aims to guarantee measurement results in accordance with established standards. One of the tools used for pressure calibration is the Digital Presure Meter, which is the function of this tool to measure pressure on the Sphygmomanometer and Suction Pump or other tools that use pressure parameters for measurement. This module uses the Arduino system as a control and processing of analog data into digital data in order to condition the output of the MPX5050GP sensor for positive pressure and MPXV4115VC6U sensor for vacum 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 also an automatic leak test feature for the Sphygmomanometer, the measurement results obtained an average error of 7.3 mmHg for sphymomanometer 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 tools that use positive pressure and negative pressure.

scholarly journals Digital Pressure Meter Equipped with Temperature and Humidity

2020 ◽  
Vol 2 (1) ◽  
pp. 1-5
Author(s):  
Abdul Cholid ◽  
Her Gumiwang Ariswati ◽  
Syaifudin Syaifudin
Keyword(s):  
Stress Test ◽  
International Standards ◽  
Digital Data ◽  
Vacuum Pressure ◽  
Positive Pressure ◽  
Suction Pump ◽  
Digital Pressure ◽  
Calibration Measurement ◽  
Temperature And Humidity ◽  
Pressure Meter

Calibration is a technical activity which consists of the determination, the determination of one or more properties or characteristics of a product, process or service in accordance with a special procedure has been set. The purpose of which is to ensure the calibration measurement results in accordance with national and international standards. The tools used for the calibration of pressure Digital Pressure Meter. This tool is used to measure the pressure and suction pump spygnomanometer or other devices that use parameters for measuring pressure. This module manufacturing system using Arduino system as a controller and as processing analog data into digital data of the sensor MPX5100GP and MPXV4115V using analog signal conditioning circuit and displayed on the LCD Touchscreen with 2 modes of measurement that is positive pressure and vacuum pressure with pressures ranging from 0-300 mmHg for positive pressure and 0 –(-400)  mmHg to vacuum pressure. There are also  DHT22 sensor, As a detector for temperature and humidity for use in the work method in the calibration process. Based on a stress test generated and using comparators Digital Pressure Meter 2 plus brand fluke, this tool has an error value of 0 to 0.58% and has a value increment or correction value of 0 - 3. It can be concluded that the DPM DUA MODE this deserves to be used.

scholarly journals Design a Low-Cost Digital Pressure Meter Equipped with Temperature and Humidity Parameters

2021 ◽  
Vol 3 (2) ◽  
pp. 59-64
Author(s):  
Bedjo Utomo ◽  
I Dewa Gede Hariwisana ◽  
Shubhrojit Misra
Keyword(s):  
Low Cost ◽  
International Standards ◽  
Positive Pressure ◽  
Leak Test ◽  
Special Procedure ◽  
Digital Pressure ◽  
Standard Tool ◽  
Measurement Results ◽  
Selection Mode ◽  
Pressure Meter

Calibration is a technical activity which consists of determining one or more properties and characteristics of a product, process or service according to a predetermined special procedure. The purpose of calibration is to ensure measurement results comply with national and international standards. The purpose of this study is to design two mode digital pressure meter (DPM) device equipped with a thermo-hygrometer and pressure in which the design is completed with a selection mode to determine the positive and negative pressure (vacuum) using MPX 5050GP sensor as a positive pressure sensor.  In this design DHT 22 sensors is used to measure the humidity and temperature.  To test the leak test this device is also equipped with timer. This design uses a 2.4 inch Nextion TFT LCD screen to display data. Data analysis was performed by comparing modul with standard tools. In the measurement process, Mercury tensimeter was carried out 6 times the data and the smallest results were 0 mmHg on the module and 0 mmHg on the standard tool and the largest was 298.0 mmHg on the module and 300 mmHg on the standard tool. Data were collected in a room with a temperature of 31̊C and humidity of 87%. Finally, this design is applicable for daily used for electromedical engineer to calibrate the sphygmomanometer in the hospitals

scholarly journals A Digital Pressure Meter Equipped with Pressure Leak Detection

2021 ◽  
Vol 14 (2) ◽  
pp. 55-61
Author(s):  
Septian Nur Wahyu Erdyansyah ◽  
Torib Hamzah ◽  
Dyah Titisari
Keyword(s):  
Blood Pressure ◽  
Positive Pressure ◽  
Maximum Pressure ◽  
Leak Test ◽  
Inflatable Cuff ◽  
Measure Blood Pressure ◽  
Digital Pressure ◽  
Pressure Meter ◽  
Sd Card ◽  
Mercury Manometer

A manual sphygmomanometer is an instrument used to measure blood pressure, and consists of an inflatable cuff, a mercury manometer (or aneroid gauge) and an inflation ball and gauge. To assess the condition, accuracy and safety of mercury and anaeroid sphygmomanometers in use in general practice and to pilot a scheme for sphyg- momanometer maintenance within the district. Therefore, it must be calibrated periodically. Using the MPX 5050GP sensor as a positive pressure sensor. Requires a maximum pressure of 300 mmHg. This tool is also equipped with a SD Card as external storage. The display used in this module is TFT Nextion 2.8”. After conductings measurements of the three comparisons consisting of Multifunction, DPM and mercury tensimeter to 6 times, the smallest result 0 mmHg and the largest results 251.52 mmHg. While the error in mercury tensimeter’s of leak test to module and rigel is 0.56% and 0.404%.

scholarly journals The Mechanism of Gill Ventilation in Three Freshwater Teleosts

1958 ◽  
Vol 35 (4) ◽  
pp. 807-823 ◽  
Author(s):  
G. M. HUGHES
Keyword(s):  
Negative Pressure ◽  
Time Course ◽  
Phase 1 ◽  
Quantitative Relationship ◽  
Differential Pressure ◽  
Positive Pressure ◽  
Pressure Curve ◽  
Suction Pump ◽  
Opening And Closing ◽  
Pressure Changes

1. A study has been made of the respiratory movements of three species of freshwater fish. The time course of pressure changes in the buccal and opercular cavities was recorded and movements of the mouth and operculum plotted from ciné films taken simultaneously. 2. Opening and closing of the mouth precede respectively abduction and adduction of the operculum by about one-fifth of a cycle. 3. The most prominent part of the buccal pressure curve is a positive pressure associated with mouth closing. The size of a negative pressure as the mouth opens is small in the trout but may be relatively large in the tench. 4. Abduction of the operculum produces a marked negative pressure in the opercular cavity of all three species and there is a slight positive pressure during its adduction. 5. The respiratory system is divided into a buccal and two opercular cavities and the concept of gill resistances separating them is introduced. 6. The respiratory cycle is made up of four phases which succeed one another. These are: phase (1) opercular suction pump predominant; phase (2) transition with a reduction in differential pressure between the buccal and opercular cavities; phase (3) buccal pressure pump predominant; and phase (4) transition with reversal of differential pressure. 7. With the exception of phase (4), which occupies only about one-tenth of a cycle, the pressure in the buccal cavity exceeds that in the opercular cavity throughout the cycle. It is therefore concluded that water will flow across the gills for almost the entire cycle but may reverse for this brief period. The quantitative relationship between the pressures and the volume of water flowing across the gills during different parts of the cycle will depend upon the properties of the gill resistances.

scholarly journals Digital Pressure Meter Tensimeter Dan Suction Pump

2019 ◽  
Vol 12 (1) ◽  
pp. 1-4
Author(s):  
Mukhamad Ryan Nur Rokhman ◽  
Bambang Guruh Irianto ◽  
Her Gumiwang Ariswati
Keyword(s):  
Suction Pump ◽  
Digital Pressure ◽  
Pressure Meter ◽  
Pressure Calibrator

Kalibrasi merupakan suatu kegiatan teknis yang terdiri  atas penetapan, penentuan satu atau lebih sifat dan karakteristik dari suatu produk, proses atau jasa sesuai dengan prosedur khusus yang telah ditetapkan. Tujuan kalibrasi yaitu untuk menjamin hasil pengukuran sesuai dengan standar nasional maupun internasional. Digital pressure meter (DPM) Tensimeter dan Suction Pump merupakan alat kalibrasi yang digunakan untuk menentukan tekanan positif maupun negatif (vacum). Memiliki titik resolusi naik turun 0,25 mmHg. Display yang digunakan pada modul ini adalah LCD 4x20 dimana pemograman keseluruhan menggunakan arduino ATmega328. Setelah melalui proses pembandingan dengan alat Pressure Calibrator di BPFK yang terkalibrasi di dapat nilai kesalahan dan error cukup rendah untuk nilai kesalahan pada tekanan positif bernilai kurang dari 0,83 mmHg, dan kurang dari 0,67 untuk tekanan negatif. Memiliki hasil rata-rata error sebesar 0,24% untuk tekanan positif dan tekanan negative.

scholarly journals DPM Dua Mode Dilengkapi Thermohygrometer dan Pemilihan Tekanan (Positive Pressure)

2020 ◽  
Vol 13 (2) ◽  
pp. 91-97
Author(s):  
Ketut Dyah Kusumadewi ◽  
Syaifudin Syaifudin ◽  
Tri Bowo Indrato
Keyword(s):  
Positive Pressure ◽  
Digital Pressure ◽  
Pressure Meter

Kalibrasi merupakan suatu kegiatan teknis yang terdiri atas penetapan, penentuan suatu atau lebih sifat dan karakteristik  dari suatu produk, proses atau jasa sesuai dengan prosedur khusus yang telah ditetapkan. Digital Pressure Meter (DPM) merupakan alat yang digunakan untuk mengukur tekanan positif dan negatif pada alat Kesehatan. Tujuan dibuatnya alat Digital Pressure Meter (DPM) Dua Mode dilengkapi Thermohygrometer dan Pemilihan Tekanan (Positive Pressure) sebagai solusi untuk menciptakan perangkat pemantauan tekanan darah yang lebih informatif efektif serta akurat dalam pengukurannya. Kontribusi penelitian ini adalah sistem dapat dijalankan dengan menggunakan sensor tekanan tiup, hasil ukur bisa dikonversi kesatuan kPa dan ditampilkan di LCD TFT Nextion 2,4 inch. Agar sistem berjalan maka diperlukan tekanan tiup yang sesuai dengan alat tensimeter itu sendiri. Menggunakan sensor MPX 5050GP sebagai sensor tekanan positif. Membutuhkan tekanan maksimal 300 mmHg. Menggunakan sensor DHT 22 untuk suhu kelembaban. Alat ini juga di lengkapi degan timer uji kebocoran. Display yang digunakan pada modul ini adalah LCD TFT Nextion 2,4 inch Setelah melakukan proses pengukuran ke alat tensimeter air raksa  sebanyak 6 kali  didapatkanhasilterkecil 0 mmHg pada tekanan 0 mmHg dan yang terbesar 298.0 mmHg pada tekanan 300mmHg. Simpangan rata-rata terbesar ini dikarenakan adanya kebocoran tekanan antara selang penghubung output modul dan penghubung ke alat tensimeter. Berdasarkan pengambilan data suhu kelembaban yang dilakukan pada ruangan  diperoleh 31̊C pada suhu  dan 87% pada kelembaban. Dari penelitian ini Rangkaian keseluruhan  yang dibuat sudah sesuai dengan kebutuhan modul DPM Hasil penelitian menunjukkan bahwa modul bisa digunakan untuk proses kalibrasi pada alat tensimeter.

scholarly journals Modification of Digital Oil Pressure Measurement Equipment using Bluetooth Technology

2019 ◽  
Vol 13 (2) ◽  
pp. 103
Author(s):  
Rasma Rasma ◽  
Thomas Junaedi ◽  
Hendro Purwono ◽  
Riki Effendi
Keyword(s):  
Pressure Gauge ◽  
Measurement Methods ◽  
Hydraulic Pressure ◽  
Work Process ◽  
Diagnostic Instruments ◽  
Digital Pressure ◽  
Wide Range ◽  
Measurement Results ◽  
The Right ◽  
Selection Of

PT United Tractors Tbk Jakarta workshop held a lot of Machine Inspection Programs for Komatsu units. During the implementation of the Machine Inspection Program (PPM) the machine inspection program is one part of the maintenance that is carried out periodically to obtain accurate data on the condition of the equipment at the time by carrying out checks and adjustments using measurement methods and diagnostic instruments The use of a pressure gauge is still using manual and has a measurement distance that is still limited, if workers or mechanics are not equipped with sufficient knowledge then the pressure gauge will have the potential for error in use and the selection of a pressure gauge is not appropriate to the pressure gauge directly connected to the hydraulic pressure through the hose then the work process ppm is not enough 1 manpower. Therefore it is necessary to modify a digital pressure gauge that has a wide range of scales, in addition a wireless connection is needed to enable the operation of the unit and measurements are made 1 manpower and Bluetooth is one of the right choices in addition to the reach can be met in an application not too difficult so that readings measurement results can be connected directly via mobile.

Study of Toynbee Phenomenon by Combined Intranasopharyngeal and Tympanometric Measurements

1988 ◽  
Vol 97 (2) ◽  
pp. 199-206 ◽  
Author(s):  
Yehuda Finkelstein ◽  
Yuval Zohar ◽  
Yoav P. Talmi ◽  
Nelu Laurian
Keyword(s):  
Middle Ear ◽  
Negative Pressure ◽  
Pressure Change ◽  
Positive Pressure ◽  
New Information ◽  
Pressure Changes ◽  
Rapid Pressure

The Toynbee maneuver, swallowing when the nose is obstructed, leads in most cases to pressure changes in one or both middle ears, resulting in a sensation of fullness. Since first described, many varying and contradictory comments have been reported in the literature concerning the type and amount of pressure changes both in the nasopharynx and in the middle ear. In our study, the pressure changes were determined by catheters placed into the nasopharynx and repeated tympanometric measurements. New information concerning the rapid pressure variations in the nasopharynx and middle ear during deglutition with an obstructed nose was obtained. Typical individual nasopharyngeal pressure change patterns were recorded, ranging from a maximal positive pressure of + 450 to a negative pressure as low as −320 mm H2O.

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