Define pressure. pressure synonyms, pressure pronunciation, pressure translation, English dictionary definition of pressure. n. 1. a. The act of pressing. b. The condition of being pressed. 2. The application of continuous force by one body on another that it is touching;.. Pressure is defined as the physical force exerted on an object. The force applied is perpendicular to the surface of objects per unit area. The basic formula for pressure is F/A (Force per unit area). Unit of pressure is Pascals (Pa). Types of Pressures are Absolute, Atmospheric, Differential, and Gauge Pressure Pressure definition is - the burden of physical or mental distress. How to use pressure in a sentence Pressure is defined to be the amount of force exerted per area. So to create a large amount of pressure, you can either exert a large force or exert a force over a small area (or do both). In other words, you might be safe lying on a bed of nails if the total surface area of all the nail tips together is large enough The absolute pressure exerted by the air within the tire, including atmospheric pressure, is 45 pounds per square inch. Pressures less than atmospheric are negative gauge pressures that correspond to partial vacuums. Hydrostatic pressure is the stress, or pressure, exerted equally in all directions at points within a confined fluid (liquid or.

Pressure - definition of pressure by The Free Dictionar

  1. Pressure definition, the exertion of force upon a surface by an object, fluid, etc., in contact with it: the pressure of earth against a wall. See more
  2. Pressure is defined as a measure of the force applied over a unit area. Pressure is often expressed in units of Pascals (Pa), newtons per square meter (N/m 2 or kg/m·s 2), or pounds per square inch.Other units include the atmosphere (atm), torr, bar, and meters sea water (msw)
  3. Watch the official music video for Pressure by Billy JoelIn 1982, Billy Joel released an album titled The Nylon Curtain, which became a Billboard Top 10 al..
  4. The bar is a metric unit of pressure, but not part of the International System of Units (SI). It is defined as exactly equal to 100,000 Pa (100 kPa), or slightly less than the current average atmospheric pressure on Earth at sea level (approximately 1.013 bar). By the barometric formula, 1 bar is roughly the atmospheric pressure on Earth at an altitude of 111 metres at 15 °C
  5. Pressure. Pressure is defined as the force divided by the area perpendicular to the force over which the force is applied, or. P = F A P = F A. A given force can have a significantly different effect depending on the area over which the force is exerted, as shown in Figure 1. The SI unit for pressure is the pascal, where
  6. pressure definition: 1. the force you produce when you press something: 2. the force that a liquid or gas produces when. Learn more

You can support me on Patreon: https://www.patreon.com/QueenHouse85Instagram: https://www.instagram.com/queenhouse85/Facbook: https://www.facebook.com/QueenH.. 24 synonyms of pressure from the Merriam-Webster Thesaurus, plus 52 related words, definitions, and antonyms. Find another word for pressure. Pressure: the burden on one's emotional or mental well-being created by demands on one's time. Synonyms: strain, stress, tension Find the right word Free online pressure converter - converts between 53 units of pressure, including pascal [Pa], kilopascal [kPa], bar, psi [psi], etc. Also, explore many other unit converters or learn more about pressure unit conversions

What is Pressure? - Definition, Formula, Unit, Examples

Find 104 ways to say PRESSURE, along with antonyms, related words, and example sentences at Thesaurus.com, the world's most trusted free thesaurus 1 Torr = 1 mm Hg; Note! - pressure is force per unit area and commonly used pressure units like kg/cm 2 and similar are in principle not correct since kg is a mass unit. Mass must be multiplied with gravity g to be a force (weight).. more about mass and weight (force) Example - Convert from 10 psi to Pa. From the table above - to convert from psi, multiply psi with 6894.76 pressure (countable and uncountable, plural pressures) A pressing; a force applied to a surface. Apply pressure to the wound to stop the bleeding. A contrasting force or impulse of any kind the pressure of poverty; the pressure of taxes; the pressure of motives on the mind; the pressure of civilization hPa - Hectopascal Pressure Unit. Hectopascal is a 100x multiple of the pascal, which is the SI unit for pressure. The hectopascal is the international unit for measuring atmospheric or barometric pressure. 1 hectopascal equals 100 pascals. Due to its low value the hectopascal is ideal for use as a measure of atmospheric pressure and other low. Pressure. Taking Dead Aim with Charlie Nance. 00:00 / 47:43. Pressure. Description. Apologies for the tardiness of this. At some point, internet troubles and outages get to all of us, right? In any event, here we go with former NFL player and scratch golfer, Frank Garcia talking about the pressure of an elite athlete

Blood pressure measurements fall into several categories: Normal blood pressure. Your blood pressure is normal if it's below 120/80 mm Hg. Elevated blood pressure. Elevated blood pressure is a systolic pressure ranging from 120 to 129 mm Hg and a diastolic pressure below (not above) 80 mm Hg Pressure Cooker: Directed by Sujoi, Sushil. With Abhinaya, Anil, Preethi Asrani, Babloo. A young man faces immense pressure from his family to move to America, get a job and have his life settled abroad That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes Pressure is a scalar quantity defined as force per unit area. Pressure only concerns the force component perpendicular to the surface upon which it acts, thus if the force acts at an angle, the force component along the direction perpendicular to the surface must be used to calculate pressure. The pressure exerted on a surface by an object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus a column of fluid, or an object submerged in the fluid, experiences greater pressure at the bottom of the column than at the top. This difference in pressure results in a net force that tends to accelerate an object upwards

Pressure Definition of Pressure by Merriam-Webste

A pressure transducer, often called a pressure transmitter, is a transducer that converts pressure into an analog electrical signal.Although there are various types of pressure transducers, one of the most common is the strain-gage base transducer. The conversion of pressure into an electrical signal is achieved by the physical deformation of strain gages which are bonded into the diaphragm of. While modes have classically been divided up into pressure or volume controlled modes, a more modern approach describes ventilatory modes based on three characteristics - the trigger (flow versus pressure), thelimit (what determines the size of the breath), and the cycle (what actually ends the breath). In both VCV and PCV, time is the cycle, the difference being in how the time to cessation. Pascal (Pa) is the metric SI unit of pressure and the standard pressure unit in the MKS metric system, equal to one newton per square meter or one kilogram per meter per second per second. Sounds impressive, but in traditional English terms a pascal is only 0.000 145 pounds per square inch (0.020 885 lbf/ft 2 or 0.007 50 mmHg). Thus pressure.

What is pressure? (article) Fluids Khan Academ

High blood pressure (hypertension) is a common condition in which the long-term force of the blood against your artery walls is high enough that it may eventually cause health problems, such as heart disease. Blood pressure is determined both by the amount of blood your heart pumps and the amount of resistance to blood flow in your arteries The formula used by this calculator to calculate the pressure from force and area is: P = F / A. Symbols. P = Pressure; F = Force; A = Area; Applied Force (F) This is the force generated by a load acting on a surface and can be specified in any of the force measurement units available from the drop down selection box

Pressure ulcer (Pr U) incidence is associated with an increased Morbidity & Mortality - nearly 70% die within six months. (Brown 2003) Pr U incidence is increasing in long term care. (LTC) (Horn et al. 2004) Reduction of pressure ulcer prevalence in LTC is a Healthy People 2010 initiative The diastolic pressure peaks at and subsequently declines after the age of 55 years, while the systolic pressure rises relentlessly with each decade of life . Thus, depending upon the respective changes in systolic and diastolic pressures with older age, the mean blood pressure may actually tend to change less as individuals age

Monograph: Pressure Ulcers: Prevalence, Incidence and Implications for the Future was authored by 27 experts from the NPIAP and invited authorities and edited by NPIAP Alum Dr. Barbara Pieper. Other Organizations: Links to other American & international pressure injury-related organizations. Position Statements: Brief documents clarifying NPIAP. Plateau pressure is the pressure that is applied by the mechanical ventilator to the small airways and alveoli. The plateau pressure is measured at end-inspiration with an inspiratory hold maneuver on the mechanical ventilator that is 0.5 to 1 second. Meta-analysis demonstrated a significant correlation between plateau pressures greater than 35. Gauge pressure is the additional pressure in any system relative to the atmospheric pressure, and is equal to the difference between the absolute and atmospheric pressure while also being zero-referenced against the ambient air pressure. The negative sign is usually omitted and is used to distinguish the negative pressure

Pressure gauge, instrument for measuring the condition of a fluid (liquid or gas) that is specified by the force that the fluid would exert, when at rest, on a unit area, such as pounds per square inch or newtons per square centimetre.. The reading on a gauge, which is the difference between two pressures, is known as the gauge pressure. If the lower of the pressures is the pressure of the. However, we suggest a less aggressive systolic goal blood pressure of 135 to 140 mmHg (routine measurements) or 130 to 135 mmHg (non-routine measurements) in patients with a reduced life expectancy, for example because of a high burden of comorbidity, or in those with postural hypotension Practice deep breaths. If you are feeling an immense amount of pressure, excuse yourself or grab a few minutes alone to calm yourself. Deep, diaphragmatic breaths can evoke your body's natural relaxation response and lower heart rate and blood pressure. A few minutes of this exercise can bring about calm and recenter you to focus on managing any stressful situations What is Pressure Drop? Pressure Drop = P = Pressure Differential = PSIG (from Greek Delta) is a change in something; in this case a change or drop in pressure at the valve as a result of system demand

Pressure - the amount of force that is applied to an area where the force is distributed. The metric system unit used to describe pressure is the pascal (Pa) which translates to newtons per square meter Pressure Conversion. Convert what quantity? From: atmosphere [standard] atmosphere [technical] attobar attopascal bar barad barye centibar centihg centimeter of mercury [0 °C] centimeter of water [4 °C] centipascal centitorr decibar decipascal decitorr dekabar dekapascal dyne/square centimeter exabar exapascal femtobar femtopascal foot of air.

The pressure measured in the direction of the motion is called the total pressure and is equal to the sum of the static and dynamic pressureas described by Bernoulli's equation. Macro Scale Definition of Pressure. Turning to the larger scale, the pressure is a state variable of a gas, like the temperature and the density Blood pressure test results are written with the two numbers separated by a slash. The top number is called the systolic pressure and represents the pressure as the heart beats and pushes blood through the blood vessels. The bottom number is called the diastolic pressure and represents the pressure as blood vessels relax between heartbeats The Omron Platinum Upper Arm, validated by the American Heart Association for clinical accuracy, is a highly-rated around-the-arm blood pressure monitor that checks off many of the boxes mentioned by Dr. Oen-Hsiao—and then some. First, it takes three consecutive readings of your blood pressure, computing an average of them to give you the most accurate reading possible Pressure Gradient Diagrams - A pressure gradient diagram is a graphical presentation of the static pressure throughout a fluid flow system; Pressure to Head - Unit Converter - Convert between pressure and head units - like lb/in 2, atm, inches mercury, bars, Pa and more . The Instant Pot, a cult favorite, has everything you need in a pressure cooker, plus extras. The seven functions on this 6-quart model are pressure cooker, slow cooker, rice cooker, sauté/browning, yogurt maker, steamer, and warmer.The control panel makes cooking easy, with high and low pressure, three sauté temperatures, slow cook, and warming all at the touch of a button

pressure Definition, Measurement, & Types Britannic

  1. BP, blood pressure * The 90th percentile is 1.28 SD, 95th percentile is 1.645 SD, and the 99th percentile is 2.326 SD over the mean. For research purposes, the standard deviations in Appendix Table B-1 allow one to compute BP Z-scores and percentiles for boy
  2. 10. What pressure is needed to expand a balloon, initially 3 in diameter and with a wall thickness of 0.1 , to a diameter of 30 ? The balloon is constructed of a rubber with a specific gravity of 0.9 and a molecular weight between crosslinks of 3000 g/mol. The temperatureis20 . 11
  3. Pressure Relief Valves. A pressure Relief Valve is a safety device designed to protect a pressurized vessel or system during an overpressure event. An overpressure event refers to any condition which would cause pressure in a vessel or system to increase beyond the specified design pressure or maximum allowable working pressure (MAWP)
  4. In Pressure Overdrive you revisit an action packed world, filled with crazy characters and funky humor. This enhanced version will challenge your skills, while you race, ram and blast your way through countless bullets and enemies. Customize your buggy for clever play styles and have a friend join the cause in local coop mode
  5. Pressure equation: P = ρgh where P = pressure (N/m 2 ), ρ = mass density of fluid (kg/m 3 ), g = acceleration due to gravity = 9.8066 m/s 2, h = height of fluid column (m) (SI units shown in equation, but calculation converts a variety of units) Introduction. Engineers and others often need a conversion between pressure and height of fluid.
  6. ute. They are two separate measurements and indicators of health. For people with high blood pressure (HBP or hypertension), there's no substitute for measuring blood pressure
  7. High blood pressure, also known as hypertension, is a common disease that develops when blood flows through your arteries at higher-than-normal pressures. Your blood pressure is made up of two numbers: systolic and diastolic. Systolic pressure is the pressure when the ventricles pump blood out of the heart. Diastolic pressure is the pressure.

Pressure Definition & Meaning Dictionary

Atmospheric pressure definition, the pressure exerted by the earth's atmosphere at any given point, being the product of the mass of the atmospheric column of the unit area above the given point and of the gravitational acceleration at the given point. See more The spring-loaded pressure-reducing valve ( Figure 7-15) is commonly used in pneumatic systems. It is often referred to as a pressure regulator. The valve simply uses spring pressure against a diaphragm to open the valve. On the bottom of the diaphragm, the outlet pressure of the valve forces the diaphragm upward to shut the valve

A pressure sensor is a device that senses pressure and converts it into an electric signal where the amount depends upon the pressure applied. TE Connectivity (TE) designs and manufactures pressure sensors ranging from the sensing element to system packaging for harsh environments. We are an industry leader for our range of both standard and. Vapor Pressure. The Macroscopic View. The vapor pressure of a liquid is the equilibrium pressure of a vapor above its liquid (or solid); that is, the pressure of the vapor resulting from evaporation of a liquid (or solid) above a sample of the liquid (or solid) in a closed container Pressure, P, is a function of force, F, and area, A: P = F/A. The SI unit for pressure is the pascal (N/m 2), but other common units of pressure include pounds per square inch (psi), atmospheres (atm), bars, inches of mercury (in. Hg), millimeters of mercury (mm Hg), and torr. A pressure measurement can be described as either static or dynamic The blood pressure rise appears immediately and occurs before any increase in circulating catecholamines. In hypertensive patients the blood pressure lowering effect of beta-blockers may be partly abolished by tobacco smoking whereas alpha-receptor blockers seem to maintain the antihypertensive efficacy in smokers. It is a paradox that while.

Pressure Definition and Examples (Science

pressure. The force per unit area exerted by a gas or liquid over a surface in a direction perpendicular to that surface. The SI unit of pressure is the pascal (Pa), although blood pressure and intraocular pressure remain specified in the non-SI unit millimetres of mercury (mmHg). See oxygen permeability TRANSMITTER, PRESSURE: FFT:ITEM TO BE SUPPLIED ALONG WITH THE MANIFOLD. SPARE FOR PRESSURE TRANSMITTERS, MNFR: EMERSON - ROSEMOUNT MNFR PART NO: 2000734Material No: 72216 Static pressure Static pressure is the measure of the potential energy of a unit of air in the particular cross section of a duct. Air pressure on the duct wall is considered static. Imagine a fan blowing into a completely closed duct; it will create only static pressure because there is no air flow through the duct

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Billy Joel - Pressure (Official Video) - YouTub

peer pressure definition: 1. the strong influence of a group, especially of children, on members of that group to behave as. Learn more With this hose you can improve the power and extend the areas of use of your pressure washer.it is the ideal solution for specific tasks, such as car, patio or roofing and gutter cleaning. Features: High-pressure extension hose for greater flexibility. Quick connect connection; 9M High-quality, durable high pressure hos This pressure — blood pressure — is the result of two forces: The first force (systolic pressure) occurs as blood pumps out of the heart and into the arteries that are part of the circulatory system. The second force (diastolic pressure) is created as the heart rests between heart beats Here are just a few of the consequences of putting kids under too much pressure to perform. Higher rates of mental illness. Kids who feel like they're under constant pressure can experience constant anxiety. High amounts of stress can also place children at a greater risk of developing depression or other mental health conditions

Bar (unit) - Wikipedi

Pressure is also related to density. If a solid or a fluid is more dense, it has a larger weight, and therefore exerts a larger force, over the same area. The SI unit of pressure is the Pascal (Pa) named after French physicist Blaise Pascal, who did much work on pressure. 1 pascal = a force of 1 newton per square meter. To measure much larger. Description. Explore pressure under and above water. See how pressure changes as you change fluids, gravity, container shapes, and volume. Sample Learning Goals. Describe how pressure changes in air and water as a function of depth. Describe what variables affect pressure. Predict pressure in a variety of situations. Version 1.1.19

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Pressure Physics - Lumen Learnin

  1. Pressure pushes us and places demands on our physical, mental and emotional well-being that can feel, well, less than ideal. We all must learn to perform under pressure to be not only successful.
  2. Recognized for excellence in manufacturing, every piece of Cameron pressure control equipment integrates highly tested material and superior engineering—along with a century of experience and the reliability that comes with it. We were the first to engineer large-bore drilling BOPs rated 20,000+ psi for deepwater drilling and the first to.
  3. ences and hard surfaces such as a mattress. They are caused by pressure in combination with friction, shearing forces, and moisture. The pressure compresses small blood vessels and leads to impaired tissue perfusion
  4. The air pressure in the middle ear is most often the same as the air pressure outside of the body. The eustachian tube is a connection between the middle ear and the back of the nose and upper throat. Swallowing or yawning opens the eustachian tube and allows air to flow into or out of the middle ear
  5. Using ISA standards, the defaults for pressure and temperature at sea level are 101,325 Pa and 288 K. Due to the fact that weather conditions affect pressure and altitude calculations, the pressure and temperature at sea level must be known. The altitude at a given air pressure can be calculated using Equation 1 for an altitude up to 11 km.

PRESSURE meaning in the Cambridge English Dictionar

Blood pressure is a measurement of the force exerted against the walls of your arteries as your heart pumps blood to your body. Hypertension is the term used to describe high blood pressure. Untreated high blood pressure can lead to many medical problems. These include heart disease, stroke, kidney failure, eye problems, and other health issues We would like to show you a description here but the site won't allow us Peer Pressure and Addiction. Peer pressure causes kids to do things they would not otherwise do with the hope of fitting in or being noticed, and of course, this can include experimenting with alcohol and/or drugs. Beyond prompting kids to use drugs, peer pressure or the desire to impress their peers can override a teen or tween's fear of. In vacuum technology, we never speak or use the term vacuum pressure . Either call it vacuum or pressure. Vacuum is absence of air or gases, or the condition when air is removed from a system to create pressure below atmospheric . Taking standar.. ADARSH INDUSTRIES is a leading manufacturer, exporter and stockist of ADARSH pressure gauges, digital pressure gauges, temperature gauges and thermometers, gauge accessories like syphon, gauge cock, pulsation dampner, needle vavles, manifolds, thermowells, Pressure Calibrators, Temperature Calibrators, Dead Weight Tester, Pressure Transmitter, etc

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  1. g.
  2. Mean arterial pressure (MAP) measures the flow, resistance, and pressure in your arteries during one heartbeat. Both high and low MAPs can indicate underlying problems, such as internal bleeding.
  3. Systolic pressure: This is the first, or top, number. It indicates the pressure in your arteries when your heart beats and pumps out blood. Diastolic pressure: This is the second, or bottom.

Pressure Synonyms, Pressure Antonyms Merriam-Webster

  1. You feel pressure when something presses on you -- whether a physical force or a stressful situation. If you don't crack under the pressure of witnessing the accident, you will calmly apply pressure on the driver's wound until help arrives
  2. The atmospheric pressure shown on the weather map is adjusted to the equivalent sea level pressure. (1atm=1013.25hPa
  3. Many people choose a gas-powered pressure washer because they are much more powerful at all levels, they last much longer, and they can be repaired. If a separate part fails, like a pump, you can replace the pump and move on—almost anything on the unit's metal frame can be repaired or replaced. And, because it uses gasoline, you can take it.
  4. The total pressure is the same as absolute pressure on pressure gauges readings, while the gauge pressure is the same as the fluid pressure alone, not including atmospheric pressure. P total = P atmosphere + P fluid. P total = P atmosphere + ( r * g * h ) A Pascal is the unit of pressure in the metric system

Pressure Converter - unitconverters

Equatorial low-pressure trough: This area is in the Earth's equatorial region (0 to 10 degrees north and south) and is composed of warm, light, ascending, and converging air. Because the converging air is wet and full of excess energy, it expands and cools as it rises, creating the clouds and heavy rainfall that are prominent throughout the area Absolute pressure = Gauge pressure + Atmospheric pressure (Atmospheric pressure at 1,01325 bar, i.e. normal atmospheric pressure on the sea level at 0°C). Boiling point: Temperature of saturated vapour or also of ebullient water under the same pressure

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Pressure - Georgia State Universit

You can feel an increase of pressure on your eardrums. This is due to an increase in hydrostatic pressure, the force per unit area exerted by a liquid on an object. The deeper you go under the sea, the greater the pressure of the water pushing down on you. For every 33 feet (10.06 meters) you go down, the pressure increases by one atmosphere Blood pressure measurement: A calculation of both the systolic and diastolic It is written or displayed with the systolic number first and the diastolic pressure second. For example, 120/80. This is a normal blood pressure reading GUTA Tire Pressure Monitoring System - 4 External Sensor (0-188 PSI) tpms, 6 Alarm Modes, High-end Backlight LCD Display, Automatic Sleep Mode, Can Monitor up to 8-10 Tires, Real-time Monitor Pressure. 4.4 out of 5 stars. 125. $159.99 Angiotensin II (Ang II) raises blood pressure (BP) by a number of actions, the most important ones being vasoconstriction, sympathetic nervous stimulation, increased aldosterone biosynthesis and renal actions. Other Ang II actions include induction of growth, cell migration, and mitosis of vascular

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Hypertension - WH

The new guidelines note that blood pressure should be measured on a regular basis and encourage people to use home blood pressure monitors. Monitors can range from $40 to $100 on average, but your insurance may cover part or all of the cost. Measure your blood pressure a few times a week and see your doctor if you notice any significant changes Air pressure can be increased (or decreased) one of two ways. First, simply adding molecules to any particular container will increase the pressure. A larger number of molecules in any particular container will increase the number of collisions with the container's boundary which is observed as an increase in pressure A water pressure regulator (sometimes called a pressure-reducing valve, or PRV) is a specialized plumbing valve that reduces the water pressure coming into the home through the main water line.This valve brings down the pressure to a safe level before the water reaches any plumbing fixtures inside the home You can also use peer pressure to your advantage. Think of it as competitive peer pressure. For example, if you're active in sports, your teammates probably pressure you to be the best you can be. If you're on the track team, you pace yourself with the fastest runner, because you know it will make you better

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Pressure units and pressure unit conversio

Differential Pressure (DP) transmitters measure the difference between two pressures. They use a reference point called the low-side pressure and compare it to the high-side pressure. Ports in the instrument are marked high-side and low-side. The DP reading can be either negative or positive depending on whether the low-side or high-side is the. Vapor Pressure and Water. With any body of water, water molecules are always both evaporating and condensing. The vapor pressure of water is the pressure at which the gas phase is in equilibrium with the liquid phase. The high surface tension of water (water sticks to itself, so it doesn't want to evaporate) means water has a low vapor.

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Sensirion's digital and analog differential pressure sensors are mostly used to measure mass air flow in a bypass configuration. In many high-volume applications, it is the low-cost alternative to complete flow sensors. The outstanding performance of Sensirion's differential pressure sensors is based on the CMOSens® dynamic measuring principle. If you have low blood pressure Low blood pressure (known as hypotension) is a much less common problem than hypertension, but it can still significantly impact blood flow to the brain and increase your risk of shock, stroke, heart attack, and kidney failure Differential pressure transmitters. The differential pressure transmitter portfolio from ABB offers a broad variety of communication possibilities. Another highlight of our sensors is the measurement accuracy up to 0.025 % Pressure for Steam. Pressure is a skin for Valve's Steam client that seeks to improve the visuals and aesthetics of Steam beyond the default skin. Pressure for Steam is currently a Work-In-Progress so expect it to change a lot between now and the official public release of the skin. Pressure is currently in BETA so expect bugs Ranging between 1300 and 1900 pounds per square inch (PSI), these machines are lightweight, quiet and perfect for smaller jobs — especially if you decide to purchase an electric pressure washer instead of a gas pressure washer. If you want a pressure washer for driveways, a medium-duty machine will come in handy