Pressure Control Valve: What are Manometres and How Do They Work?
Manometres are precision instruments that are used to measure pressure. This is because pressure is the force exerted by either liquid or gas and its effects are owed to the weight of that gas or liquid. The pressure or the exerted force must be measured accurately. Depending on how their pressure control valve is configured, a manometre can be set up to provide an accurate measurement of different pressure values.
A common type of manometre that people commonly see used by medical professionals is the one that measures and monitors a patient’s blood pressure. This is called a sphygmomanometre.
Analog manometres
Analog manometres have a fluid inside that is contained in a U-shaped tube. It operates using the Hydrostatic Balance Principle. The fluid in the tube will settle at equal height at each end of the tube when both ends are open to measure atmospheric pressure. Should any positive pressure be applied to only one leg of the U-shaped tube, the liquid level in that leg will fall while it rises in the other leg. Thus, the vertical distance between the fluid levels in the two tube ends or legs represents a measure of the amount of pressure being applied.
Digital manometres
Digital or electronic manometres do not use or rely on the Hydrostatic Balance of fluids to measure pressure. They contain a pressure transducer device that converts an observed pressure level into an electrical signal. This measured signal has a characteristic value that is either proportional to or proxy for the magnitude of the pressure. An elastic portion in the transducer deflects under pressure. This deflection is then converted to the value of an electrical parametre that can be calibrated after detection to a pressure reading.
Advantages of digital over analogue manometres
- They are portable, weigh less, and feature easy displays for reading.
- They can interface with a computer with a logic controller (LC).
- They don’t rely on manometric fluids that contain mercury and can be toxic.
- They are not subject to issues related to fluid properties that will affect the accuracy of the measurements.
- They can correct deviations from standard conditions. This can be done using programmable software or computer applications.
- Since they don’t follow any primary standard, they do not require periodic calibrations.
MasterMac 2000
Since the 1980s, Univer has been manufacturing high-quality pressure control valve sub-bases, systems, and components and other pneumatic valves for any industrial applications. MasterMac 2000 has also been distributing quality Univer and other big-brand valves since the 1980s. Contact us today for more information by calling us on 07 3344 4711. You can also visit MasterMac2000 at https://mastermac2000.com.au/.
About MasterMac2000: Your Trusted Pneumatic & Process Automation Partner.
LEADING THE INDUSTRY: Established in 1989, MasterMac2000 has grown to become one of Australia's largest privately owned pneumatic and process automation companies. We stock top-quality brands like Univer, Mack, Tolomatic, Mac, Piab, American, and Rotoflux in Brisbane.
SERVING QLD & NORTHERN NSW: We proudly service Queensland and Northern New South Wales for all your pneumatic and process equipment needs. Our mission is to provide the best pre and post-sales support while actively expanding our client base.
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About The Author
Stuart Havill
Stuart Havill is the owner and manager of MasterMac2000, Queensland's largest privately owned pneumatic and process valve company.
With his early working career as a maintenance fitter for Boral in 1992, Stuart has spent his life in the field of pneumatics and process equipment. He gained extensive experience in plant design, maintenance, repairs, fabrication, and site management.
In 1996, he transitioned to a pneumatic sales technician role at MasterMac2000, where he excelled in key account management, providing cost-effective solutions, and managing a sales team of 9 employees.
Since 2002, Stuart has been the manager at MasterMac2000, overseeing the company's growth and establishing it as a leader in pneumatic automation and process valve engineering. His expertise spans customer training, CRM setup, industrial compressor sizing and installation, and turn-key project management.
Under Stuart's leadership, MasterMac2000 has been servicing the industry since 1988, with 5 full-time sales representatives covering northern rivers NSW, Queensland, Northern Territory, and PNG. The company prides itself on providing the best-priced solutions to all customers in the marketplace.
View Stuart’s LinkedIn profile to learn more about his expertise in pneumatics and process equipment.