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| Name | Pressure Gauge Explained | Types of Gauges |
| Video Uploader | Video From RealPars |
| Upload Date | This Video Uploaded At 03-01-2022 14:00:13 |
| Video Discription | ▶ C'mon over to https://realpars.com where you can learn PLC programming faster and easier than you ever thought possible! ▶ You can read the full post here https://realpars.com/pressure-gauge ⌚Timestamps: 00:00 - Intro 00:32 - What is a pressure gauge? 00:56 - Types of pressure gauges 01:16 - Mechanical pressure gauges 02:03 - C type bourdon tube 03:15 - Zero and multiplication error 04:46 - Calibration procedure 05:25 - Gauge accuracy ============================= In this video, we’re going to talk about a very common instrument found in the industry today, the Pressure Gauge. It would be difficult to walk through any industrial or food processing plant or manufacturing facility without seeing a pressure gauge of some type. A pressure gauge is an instrument for measuring fluid intensity in a pressure-powered machine. This fluid intensity is specified by the force that the fluid would exert on a specific unit area. Typical pressure gauge intensity measurement units are pounds per square inch (psi), or newtons per square meter called the Pascal. Categorizing Pressure gauges has become more challenging with the introduction of electronic transducers and devices. Historically, pressure gauges were mechanical devices with analog scales. Today we have pressure gauges with pressure-sensing transducers operating electronic digital readouts. There are many types of mechanical pressure gauges. Three of the most common types are 1) Diaphragm, 2) Bellows, 3) Bourdon Tube. 1) A diaphragm pressure gauge uses the deflection of a flexible thin membrane called the diaphragm to measure the pressure of the fluid in a system. 2) A bellows is a corrugated expandable device made up of corrugations or ribs called convolutions. The bellows are usually brass or stainless steel and very sensitive. Pressure is supplied to the bellows causing it to expand which in turn, moves a pointer. 3) Of those three mechanical pressure gauges, by far the most common is the Bourdon Tube type. The most common type of Bourdon tube gauge is the C type in which the tube is shaped to resemble the letter C. The tube is opened at one end and sealed at the other. A change in pressure causes a deflection in the tube that is proportional to the applied pressure. The actual movement of the tube is converted into a pressure indication on a calibrated faceplate. The maximum movement of the pointer is usually 270 degrees. A typical bourdon tube pressure gauge has a rack and pinion driven by an adjustable link and lever. As the tube straightens due to a pressure increase, the sealed tip will move. A link attached to the tip of the C tube transfers the motion to a sector gear. The sector gear meshes with a pinion that turns a shaft that is connected to a pointer. The motion of the shaft causes the pointer to move on the calibrated graduated scale. As with most instruments, routine adjustments are required on Bourdon Tube pressure gauges. The two errors that require adjustments are Zero Error and Multiplication Error. - Zero error is the error of the same amount and in the same direction throughout the entire pressure range regardless of the input pressure. - Multiplication Error is the error when the total movement of the mechanism does not equal the total change in input. Calibration is normally done on a workbench using a pressure sourcing device such as a deadweight tester. Zero error is corrected by repositioning the pointer on the shaft or by changing the tension in the spring. Multiplication error is corrected by changing the length of the levers. A mechanical pressure gauge will have an analog readout or analog scale. Many of today’s pressure gauges are equipped with a digital display. The American Society of Mechanical Engineers ASME B40.1 Standard defines the accuracy grades of dial-type gauges. Requirements differ from one industry to another and the ASME B40.1 would be your guide for proper selection. ============================= Get a RealPars pro membership: https://learn.realpars.com/bundles/pro ============================= Missed our most recent videos? Watch them here: https://realpars.com/pneumatic-actuator https://realpars.com/pid-controller https://realpars.com/fanuc-robot ============================= - Pressure Sensor, Transducer, and Transmitter Explained https://realpars.com/transducer-vs-transmitter - What is an Instrument Calibrator? https://realpars.com/instrument-calibrator ============================= To stay up to date with our last videos, make sure to subscribe to this YouTube channel: http://bit.ly/realpars ============================= TWEET THIS VIDEO: https://ctt.ac/ofCJ7 ============================= Follow us on Facebook 👉 https://www.facebook.com/therealpars Follow us on Twitter 👉 https://twitter.com/realpars Follow us on LinkedIn 👉 https://www.linkedin.com/company/realpars Follow us on Instagram 👉 https://www.instagram.com/realparsdotcom #RealPars #Industry #PressureGauge [muWuIJS_F7k] |
| Category | Education |
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