Suction Pump Research Articles

THE EFFECTIVENESS OF UVAERATOR IN REDUCING AIR GERMS AND DUST LEVELS

Background, school education facilities, including higher education as a place and public facilities for formal education facilities in this country, should be a comfortable place to study. Besides functioning as a place of learning, schools can also be a threat of disease transmission . measurement number of bacteria in the air-conditioned classrooms Wulan R22 (2016) 12.167 CFU / m3 , Nur Latifah (2018) an average of 217.92 colony / hr / ft2 , hadita (2018) 331.6 colonies / hr / ft2 . Research question is how is the effectiveness of UVAerator in reducing the number of air germs and dust levels in the lecture hall R22 building Campus 7 Poltekkes Kemenkes Semarang ? Research objectives is to find the effectiveness of UVAerator in reducing the number of air germs and dust levels in the lecture hall. Research method included a quasi-experimental design with a non-equivalent control group pre test - post test. Data collection by measuring, observational, interview. The variables were temperature, humidity, lighting, air germ count, dust content. Analysis using pairet-t test comparisons and unpaired t test data. Result, the average number of bacteria with no air space UVAerator in the morning is ( 668,00 g / m3 ) and in the afternoon is ( 680.10 g / m3 ) the difference was not significant (p = 0.873), whereas the existing space UVAerator in the morning ( 876.50 g / m3 ) and in the afternoon ( 655.50 g / m3 ) shows significant difference (p = 0.001). The number of room air germs that do not exist and have UVAerator is significantly different (p = 0.002), the number of room air germs that are not there and without any UVAerator is not significant (p = 0.763), while the change in the number of room air germs that does not exist and exist UVAerator has a significant difference (p = 0.015). On average PM10 space dust that has no UVAerator in the morning ( 12.38 ug / m3 ) and in the afternoon ( 17.38 ug / m3 ) shows significant difference (p = 0.008), whereas the existing space UVAerator in the morning ( 11.63 g / m3 ) and day ( 14.50 µg / m3 ) shows that the difference is not significant (p = 0.127). PM10 dust in the room that does not exist and there is no UVAerator ported, the difference is not significant (p = 0.821), the PM10 dust in the room noon and there is UVAerator, the difference shows that it is not significant (p = 0.432), while the change in room PM10 without dust and there is a difference in UVAerator significant (p = 0.004). In conclusion, the effectiveness of reducing the number of air germs without UVAerator on average (4.56%), with UVAerator (-24.52%), the difference was not significant (p = 0.057). The effectiveness of reducing PM10 without UVAerator, mean (60.50%), with UVAerator (38.30%), the difference was not significant (p = 0.369). Suggestion, , It is necessary to control the sound intensity caused by UVAerator by adding aeration bubble breakers. The pump suction power is enlarged to accelerate the circulation of room air.

Modifikasi Oven Biasa Menjadi Oven Vakuml

The limited quantity and types of facilities for practicum, independent business projects and research, both lecturer and student research, is a problem that often arises and requires solutions to overcome it, one way to overcome the problem of limitations in types of practicum facilities is to modify existing equipment so that it can be done. used for other functions in accordance with the demands of the development of student and lecturer research studies. Modification of an ordinary oven into a vacuum oven is a set of drying ovens that are coupled with a suction pump and equipped with a vacuum gauge to measure the level of vacuum. A vacuum oven is a drying device with a low temperature, with the working principle in a vacuum that the boiling point of moisture is lower than the boiling point in atmospheric conditions so as to speed up the drying time and reduce the amount of damaged nutrients in the dried material due to drying. This drying method is suitable for materials that have high temperature sensitivity or are volatile due to their short drying time, one of which is food ingredients. At high temperature drying, the vitamin content in food is easily degraded and damaged. The modified vacuum oven can be used to dry materials from the types of leaves, fruit and tubers that were thinned using a temperature of 60°C, a vacuum level of -0.5 atm for 2 hours.

Dispositivo de recolección para zooplancton asociado a arrecifes de corales mesofóticos

Los ecosistemas de corales mesofóticos (MCEs) albergan comunidades únicas que no han sido suficientemente estudiadas debido al alto costo de las tecnologías disponibles. Estos arrecifes pueden encontrarse entre 30 y 150 m de profundidad, donde la cantidad de luz incidente es < 10 % de la que llega a la superficie. Las zooxantelas asociadas a estos arrecifes tienen una tasa fotosintética reducida debido a la baja disponibilidad de luz, por lo que el zooplancton se convierte en la principal fuente de alimento para las colonias de coral. Para el estudio de la composición de las comunidades zooplanctónicas asociadas a estos ecosistemas, se diseñó y probó un dispositivo que permitió la recolección de zoopláncteres presentes sobre el andamio arrecifal de Bajo Fríjol, en el Parque Nacional Natural Corales de Profundidad. El dispositivo consistió en una manguera lastrada que llegaba a la profundidad deseada, conectada al dispositivo recolector, mediante el cual se filtraba el agua gracias a una bomba de succión. La cantidad de agua filtrada, las especies recolectadas y su abundancia permitieron concluir que el dispositivo es una herramienta útil, versátil y económica para la caracterización y el monitoreo de la comunidad zooplanctónica en el Parque Corales de Profundidad, por lo que podría extenderse a otros ecosistemas de arrecifes someros y mesofóticos.

Analysis of Processes Mechanized Oil Mining with the Methods Theory of Electrical Circuits

The authors investigate the problems of the development of the oil and gas complex at the last stage of operation, when oil is extracted by lifting. The main methods of lifting employed in the Russian Federation and the USA are described. A particular focus is placed on large water cuts at this stage of oil production. Literature on the issue under investigation is reviewed and the problem is set to analyze and construct models of oil production processes at the stage of well operation by lifting methods using network analysis (electrical circuits) in order to rationally manage all processes comprehensively. A typical flow chart of the oil production process by lifting methods is described. Technological processes of oil production are compared to processes in electric circuits. Thus the process of pumping purified formation water into injection wells by means of block cluster pumping units is similar to the process of recharging a battery using an electric power generator. The process of filling a production well with gas-liquid mixture displaced from the formation under pressure of injection wells is similar to the process of charging a capacitor from a battery, the process of lifting liquid from production wells using production pumps — to the process of discharging a capacitor on an active load. The simplified electrical diagram of a typical flow chart of oil production processes at this stage is given. Based on the given equivalent electrical circuit of technological processes, according to the laws of theoretical electrical engineering, models of the battery charging, capacitor charging and discharging processes are built. The table of correspondence of the parameters of technological and electrical circuits is presented on the basis of which the authors propose simplified models of the processes of pumping purified formation water into injection wells using unit cluster pumping stations, of filling a production well under pressure of the injection well, lifting liquid from production wells by means of suction pumps and conditions under which various operating modes of lifting processes are achieved.

COTS-Based Real-Time System Development: An Effective Application in Pump Motor Control

The progress of embedded control systems in the last several years has made possible the realization of highly-effective controllers in many domains. It is essential for such systems to provide effective performance at an affordable cost. Furthermore, real-time embedded control systems must have low energy consumption, as well as be reliable and timely. This research investigates primarily the feasibility of implementing an embedded real-time control system, based on a low-cost, commercially off-the-shelf (COTS) microcontroller platform. It explores real-time issues, such as the reliability and timely response, of such a system implementation. This work presents the development and performance evaluation of a novel real-time control architecture, based upon a BeagleBoard microcontroller, and applied into the PWM (pulse width modulation) control of a three-phase induction motor in a suction pump. The approach followed makes minimal use of general-purpose hardware (BeagleBone Black microcontroller board) and open-source software components (including Linux Operating System with PREEMPT_RT real-time support) for building a reliable real-time control system. The applicability of the proposed control system architecture is validated and evaluated in a real case study in manufacturing. The results provide sufficient evidence of the efficiency and reliability of the proposed approach into the development of a real-time control system based upon COTS components.

Reduction of Entrained Vortices in Submersible Pump Suction Lines Using Numerical Simulations

Pump intake structure design is one area where physical models still remain as the only acceptable method that can provide reliable engineering results. Ensuring the amount of turbulence, entrained air vortices, and swirl are kept within acceptable limits requires site-specific, expensive, and time-consuming physical model studies. This study aims to investigate the viability of Computational Fluid Dynamics (CFD) as an alternative tool for pump intake design thus reducing the need for extensive physical experiments. In this study, a transient multiphase simulation of a 530 mm wide rectangular intake sump housing a 116 m3/h pump is presented. The flow conditions, vortex formation and inlet swirl are compared to an existing 1:10 reduced scaled physical model test. For the baseline test, the predicted surface and submerged vortices agreed well with those observed in the physical model. Both the physical model test and the numerical model showed that the initial geometry of the pump sump is unacceptable as per ANSI/HI 9.8 criteria. Strong type 2 to type 3 submerged vortices were observed at the floor of the pump and behind the pump. Consequently, numerical simulations of proposed sump design modification are further investigated. Two CFD models with different fillet-splitter designs are evaluated and compared based on the vortex formation and swirl. In the study, it was seen that a trident-shaped splitter design was able to prevent flow separation and vortex suppression as compared to a cross-baffle design based on ANSI/HI 9.8. CFD results for the cross-baffle design showed that backwall and floor vortices were still present and additional turbulence was observed due to the cross-flow caused by the geometry. Conversely, CFD results for the trident-shaped fillet-splitter design showed stable flow and minimized the floor and wall vortices previously observed in the first two models.

Meroplankton seasonal dynamics in the high Arctic fjord: Comparison of different sampling methods

Meroplankton comprise mainly of pelagic larvae of benthic invertebrates and play an important role as consumers and prey in coastal ecosystems. During a year-round study in Isfjorden (Svalbard Archipelago; >78°N), two locations (stations North and South) were sampled every third month to capture seasonal dynamics of meroplankton at high-latitudes, using different sampling methods (vertically hauled WP2 plankton net, and SCUBA diver-operated: horizontal towed net and underwater suction pump). Independent of sampling methods, seasonality was the factor that explained the largest part of variation in meroplankton composition (31.8%, PERMANOVA). Distinct seasonal abundance peaks were found of the following taxa: Polychaeta larvae and Cirripedia nauplii in spring; Bivalvia veligers, Echinodermata ophioplutei, and Cirripedia cypris during summer; while Bryozoa cyphonautes in autumn. These changes were driven mainly by water temperature, chlorophyll a concentration, and photoperiod, which according to DistLM routine, jointly explained 36.7% of meroplankton variability. Our results support the theory that planktotrophy is an important larval development strategy in some high Arctic taxa, e.g. Bivalvia and Cirripedia. We also observed that the southern part of Isfjorden was more productive and affected by the advection of Atlantic waters; while the northern location was influenced by the sea ice drift, coming from the north-eastern part of the Isfjord system in winter and spring, and was characterised by higher meroplankton abundances. The comparison of the number of taxa collected by each method and multivariate dispersion index between the standard WP2 plankton net and the remaining devices, operated by SCUBA divers, proved that WP2 is the most optimal method to collect meroplankton, especially from deeper waters. However, an underwater, manually operated suction pump would be a good choice in shallow coastal areas, especially with a dense kelp forest, where using a WP2 net is impossible. The joint use of the WP2 net and suction pump gives the highest value of multivariate dispersion index for the total community, as it additionally allows for the collection of demersal and epibenthic animals which are often omitted by standard net sampling methods, so this combination is worth recommending in studying shallow coastal ecosystems.

Theoretical Verification of Film Forming in Local Electroplating Process with Electrolyte Suction Tool

Electroplating has many applications, including surface hardening and metal thin film manufacturing. In conventional electroplating, the entire workpiece is immersed in the plating solution. Since the whole surface in contact with the solution is plated, a masking operation to remove the unnecessary plating film is required. This is especially applicable to local plating in the case of ornament plating, surface hardening method, among others. However, these additional processes result in substantial increase in processing time and cost. Earlier, we achieved maskless local electroplating with a smooth surface using a suction tool, in which the electrolyte was retrieved by a suction pump through a suction hole. Even so, formation of film on electroplating is yet to be verified by simulations. Herein, we performed experiments and simulations of the local electroplating by varying the processing time before comparing the results. Finally, the validity of the film forming was examined by discussing the results.

Mini production suction dredge for small scale tin mining in Bangka Belitung Island Indonesia

Mini Production Suction Dredge (MPSD) has been made for the people of Bangka Belitung Province Indonesia which is known as a cheap, safe and straightforward technology ship to mine tin sand from surface land under the sea level. This MPSD creates more safe production operation since the previous ships by using a traditional small boat for catching the fish. The main reason why this MPSD was created because there is no diving activity for an operator to drive the suction pipe flexibly under the sea which in some cases make the divers have problems and get injured seriously or fatality. The MPSD is a welded construction of 4 x 10 meters ship which is equipped with the suction unit, 24 HP diesel engines to drive two suction pumps, the tin separation jig and the steering winch. The basic construction of the dredge consists of 2 sides of 0.8-meter diameters x 10 metersof the steel pontoon. It operates on the sea waves which take the sand up to 15 meters deep from the mean sea level and allows no diving activity in 1 mile away from the coastline. Through its operation, the MPSD operated more stable and safer than the previous operation.

Correction of cavitation with thermodynamic effect for a diaphragm pump in organic Rankine cycle systems

Diaphragm pumps are a sort of leakage-proof reciprocating pumps with low flow rate but high head and better efficiency, and can potentially find their applications in organic Rankine cycle (ORC) systems as the feed-pump of organic fluid to the evaporator. A diaphragm pump in an ORC system may suffer from cavitation in the pump suction chamber inevitably when the pump delivers an organic fluid. However, the cavitation performance of the pump has been a little known for organic fluids so far. In the article, the performance of a specific diaphragm pump was determined based on the existing performance charts provided by the pump manufactory in terms of pump rotating speed and inlet liquid pressure for cold water. The net positive suction head required (NPSHr) was predicted by involving thermodynamic effect in cavitation when the pump feeds the organic liquid R245fa to the evaporator in an ORC system at 480rpm rotational speed. The net positive suction head available (NPSHa) was calculated at 100 kPa and 141 kPa inlet liquid pressures, and the corresponding cavitation safety margins were addressed. The subcooling for the NPSHr and NPSHa as well as the safety margin were figured out. Two one-dimensional (1D) mechanical models for motion of the suction valve were built and solved at 480rpm and 100 kPa and 141 kPa inlet pressures. A preliminary experiment was performed to verify the analytical results. It turned out that the NPSHr is reduced to 2.02m from 3.02m NPSHr of cold water due to the thermodynamic effect in cavitation, and the corresponding subcooling is lowered to 8.28 °C from 12.38 °C. 100 kPa but 141 kPa inlet pressure can result in cavitation in the pump. The 1D mechanical models are subject to a rough spatial resolution for the flow field in the suction chamber, hence three-dimensional(3D) numerical simulations of the flow field are desirable.

Computer modeling of ventilation when performing electric welding

The design of an integrated ventilation system, which combines local exhaust ventilation of welders' workplaces and general ventilation of premises, is considered. Thefields of air mobility, its temperature and concentration of harmful impurities are calculated using the method of computer modeling. A comparative analysis of the main types of stationary devices for local exhaust ventilation of electric welding workstations (exhaust hoods, welding panels, as well as blowers) is performed. The conditions for the effective use of lift-and-turn suction pumps have been determined. The factors influencing the efficiency of their work have been identified, and combinations of influencing factors have been established that ensure the maximum permissible concentration of harmful emissions in the working areas of welders. The conditions under which the general exchange effect of local suction is sufficient to maintain the concentration in the room at the level of maximum permissible concentrations (MPC) have been determined. The results obtained can be used to develop engineering methods for calculating and optimizing ventilation devices and systems, as well as to analyze structural and design solutions for the ventilation device of electric welding industries.

Design and fabrication of railway track cleaning bot

Indian Railways is the one of the largest Railway network in the earth. The railroads have attempted a few measures to build up its infrastructure, foundation and quality. The Indian railways are taking activities to turn into the third biggest rail line market in the next three years. India is going towards the dream of “clean and green environment”. In any case, there is a more prominent worry over garbage removal and the management. With a large section of our Indian Railways relying on manual scavenging as their current solution, developments in robotics and automation call for a more reliable and efficient system design that could bring an end to the unhygienic. The manual scavengers are subject to the conditions and thus allow for a cleaner rail network. This paper aims to present a prototype model for a cost efficient railway track cleaning machine which would prove to be a wonderful alternative to the current system in place if implemented. The proposed prototype is designed to overcome disadvantages of the available method and machine for waste disposal. A high-pressure water jet is used to spray water on the track through a nozzle and the suction pump is used to pull the waste below the surface. The track is then cleaned up with a Disinfectant. Railway platform sanitation is the very first, key prerequisite for the growth of the railway system. The proposed system would serve a cost –effective, time and lifesaving method.

УСТРОЙСТВА И ПРОЦЕССЫ ВЕНТИЛЯЦИИ ПРИ ВЫПОЛНЕНИИ ЭЛЕКТРОСВАРОЧНЫХ РАБОТ

The main direction of normalizing the parameters of the air during electric welding is proposed to consider the installation of an integrated ventilation system that combines local exhaust ventilation of welder jobs and general ventilation of rooms. In the article using the computer simulation method, the fields of air mobility, its temperature and concentration of harmful impurities are calculated and a comparative analysis of the main types of stationary devices for local exhaust ventilation of electric welding jobs: exhaust umbrellas, welding panels, and suction blowers, as well as the conditions for effective use of rotary suction pumps. Factors affecting the efficiency of their work are identified and combinations of influencing factors that provide the maximum permissible concentration of harmful emissions in the welders' working areas are established. The conditions are determined under which the general exchange effect of local suction is sufficient to maintain indoor concentration at the MPC level. The results obtained can be used to develop engineering methods for calculating and optimizing ventilation devices and systems, as well as to analyze structural and design solutions for ventilation devices in electric welding plants.

Evaluation of Valved Holding Chambers Simulating Repurposing Use of Ciclesonide Metered-dose Inhaler by Patients with Pneumonia

Achieving appropriate inhalation in patients with coronavirus disease 2019 (COVID-19) is a common challenge in the use of repurposed metered-dose inhaler (MDI) formulations. The purpose of this study was to evaluate the effect of five valved holding chambers (VHCs) on the inhalation of ciclesonide from Alvesco MDI. The aerodynamic particle size distribution of ciclesonide discharged from Alvesco MDI was evaluated using a Next Generation Impactor in the presence and absence of VHCs. The use of VHCs retained or slightly increased the amount of ciclesonide in the fine particle diameter range (aerodynamic particle size below 3 μm) (FPD) and reduced the amount at the induction port after coordinated inhalation. However, the use of VHC reduced the FPD of the formulation by increasing the time between the MDI discharge and the pump suction by various degrees among the five VHCs. These results indicated that use of the VHCs and minimizing the inhalation delay time should ensure sufficient inhalation of ciclesonide particles.

Negative Pressure Wound Therapy in Orthopedic Surgery (Review)

Summary. Negative pressure wound therapy (NPWT), in its most used Vacuum Assisted Closure (VAC) variant, consists in applying subatmospheric pressure to a wound that is sealed off by a specially designed dressing and connected by a tube to a suction pump and drainage collection system. Skin defects are extremely common in orthopedic and trauma surgery. VAC is valuable across a range of indications. Proven effects include an increase in blood flow, stimulation of angiogenesis, and a decrease in wound surface area. VAC can be used to treat post-traumatic and surgical wounds, burns, and chronic wounds such as pressure sores and ulcers. The lower frequency of dressing changes with VAC lightens the staff workload. The public health services of Australia, Belgium, Canada, New Zealand, the United States, Germany, and France have issued good practice guidelines for the use of VAC in specific and limited indications. VAC has benefited from the introduction of several technological improvements such as silicone interfaces, foam dressings with various densities and pore sizes, and irrigation systems. The result of using this method is greater adaptability to each specific situation. Nevertheless, VAC is not appropriate in every case and cannot replace a necessary surgical procedure. The aim of this study is to review the principles, practical modalities, and indications of VAC.

Karakteristik Unjuk Kerja 2 Pompa Sentrifugal Dengan Susunan Seri Sebagai Turbin Pat

The pump is a device used to move fluid from one place to another through a media pipe or channel. The energy in the fluid is produced from the impeller which converts the kinetic energy (velocity) of the liquid into potential (dynamic) energy. Besides being used to move fluid (fluid) at this time the pump can also be used as a turbine by changing the working principle of the pump by giving a drop of water at an altitude to rotate the impeller on the pump so that the pump can operate upside down or called a pump as turbine), in this study the impeller on the pump as a turbine is driven by a water flow or water pressure that is large enough, the water flow is sourced from two centrifugal pumps with a series arrangement that functions as a driving force or fluid distributor which is assumed to be a high water fall or head. The use of centrifugal pumps with a series arrangement is so as to produce a large head to get a high water fall or a maximum head for turning a pump as a turbine. This study uses an experimental method that is using two centrifugal pumps as a fluid distributor and one pump that is used as a turbine and uses a variation of 5 watt and 10 watt light bulb. From the calculation of the suction pump and pump as a turbine without using a light bulb pump speed namely 920.5 rpm and the specific speed of the turbine produced is 76.61 rpm. by using a 5 watt light bulb load the pump rotation speed is 553 rpm and the specific turbine speed produced is 44.24 rpm, using a 10 watt light bulb load the pump rotation speed is 335 rpm and the specific turbine speed produced is 26.8 rpm. The greater the value of the pump head, the resulting water discharge will be smaller and vice versa, the size and size of the pump head obtained is also influenced by the presence of load on theturbine.

Research on sealing performance of oil seals with micro-dimple texture on lips

PurposeThe purpose of this paper is to study the pumping efficiency of oil seals with different surface textures at different speeds, and the influence of the rotation direction of triangular texture on the sealing performance was further analyzed.Design/methodology/approachBased on the theory of elastohydrodynamic lubrication and the pumping mechanism of rotary shaft seals, establishing a numerical model of mixed lubrication in oil seal sealing area. The model is coupled with the lip surface texture parameters and the two-dimensional average Reynolds equation considering the surface roughness.FindingsThe results show that the application of lip surface texture technology has obvious influence on the oil film thickness, friction torque and pumping rate of oil seal. The triangular texture has the most significant effect on the increase of pump suction rate. When the rotation direction of triangular texture is 315 degrees, the pumping rate of oil seal is the largest compared with the other seven directions.Originality/valueThe model has a comprehensive theoretical guidance for the design of new oil seal products, which provides a certain basis for the application of surface texture technology in the field of sealing in the future.Peer reviewThe peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-06-2020-0198/

Rancang Bangun Water Seal Drainage (WSD) Khusus Thorax

A Water Seal Drainage (WSD) design was made to remove air and fluid from the pleural cavity in the thorax (lung cavity) using a connecting tube or chest tube to maintain the negative pressure of the cavity. Under normal circumstances, the pleural cavity has negative pressure and only a little pleural fluid is filled. Suction pumps have a high pressure with a pressure range of -10 kPa to -80 kPa. The pressure is large enough so that it is not suitable for thorax because it can cause damage to internal organs due to high pressure. WSD specifically for thorax has a low pressure which is below -5 kPa / -40 mmHg. This WSD is equipped with a hand switch, water level and automatic Arduino Uno based exhaust system which has a pressure below -26.6 kPa / -20 cmHg to suction and pressure below -3.4 kPa / -2.6 cmHg to remove liquid from the bottle . The hand switch itself functions as a manual control to make it easier for the user, while the level sensor functions as a safety level for fluid levels in the tool and also an automatic fluid disposal system so that it is more efficient.

Effects of gap between impeller and volute tongue on a pressure fluctuation in double-suction pump

The pump is a machine that receives power through a rotating shaft and converts the mechanical energy into pressure and kinetic energy of fluid. Therefore, it is widely used in various industrial fields, and many studies have been conducted to improve the performance of pumps. In this paper, the effect of the gap between the impeller and the volute tongue on the performance and pressure fluctuation of the double suction pump was investigated. Numerical analysis was conducted using the commercial code ANSYS CFX ver. 18.1. Three different values of gap between the impeller and the volute tongue, 0.067%, 0.145% and 0.224% of the impeller diameter were considered.

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

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