Pressure gauge

Pressure gauge

EMVO Techniek has been your pressure gauge specialist for over 40 years. As a wholesaler and manufacturer, we can offer you a comprehensive range of products. You can also rely on our expert advice: our specialists are here to help you choose the right manometer.

What is a pressure gauge?

A pressure gauge is a measuring instrument used to measure the pressure of a specific medium in a closed space relative to atmospheric pressure. Air pressure and water pressure for example, are often measured using a pressure gauge or manometer. There are different types of pressure gauges that can be used in various conditions to measure pressure differences, overpressure or underpressure. These measurements are crucial because pressure differences, overpressure, or underpressure can potentially cause damage. This results not only in high costs but can also be dangerous in certain situations. Therefore, a reliable measuring instrument (a pressure gauge) is essential.

How does a pressure gauge work?

The primary purpose of a pressure gauge is to monitor the pressure in a specific medium relative to atmospheric pressure. If the pressure remains constant, the mechanism will stay balanced and it will not deform. When pressure increases, the needle on the display will start to move. When pressure decreases, it will also move but in the opposite direction. The two most commonly used types of manometers are the Bourdon tube manometer and the diaphragm manometer. Each of them operates differently and serves different purposes. This page explains in detail how a manometer works.

Units of measurement for a pressure gauge

In the SI system, the standard unit of pressure is the Pascal, but it’s a very small unit. It is not practical for measuring pressure in most media because the numbers get very large. Therefore, different pressure units are used in measuring instruments:

• In Western Europe, the standard pressure unit is the Bar.
• In the United States and Canada, Psi (Pounds per square inch) is common.
• In Australia, kPa (kilo Pascal) is used.
• In India and Korea, kg/cm² is used.

At EMVO Techniek, analog pressure gauges typically come with a scale in bar or millibar, depending on the range. If you need a different pressure unit or want two pressure units on one manometer, we can customize the instrument to your requirements. Another option is a digital pressure gauge that can display pressure in various units.

How to read a pressure gauge

The basic function of a pressure gauge is to display the pressure in the measured medium, and it is easy to read. In an analog model, the current pressure is indicated by a (black) needle that moves across a scale in a specific pressure unit. A digital manometer features a digital screen that displays the current pressure in numbers. Sometimes, you can read additional data on a pressure gauge, such as the highest pressure recorded since the last reset. A digital pressure gauge offers more options, including a bar graphic depicting pressure changes over a certain period. To make reading easier, some pressure gauges have an adjustable viewing angle or backlighting.

Our pressure gauge inventory

We have divided our inventory into three sections:

• Pressure gauges
  Here, you will find our extensive and broad stock of standard pressure gauges that we can deliver immediately. This includes dry manometers, glycerin-filled manometers, and low-pressure gauges in millibar. If you want your pressure gauge customized to your needs, our workshop can accommodate many requests. Feel free to contact us for more information.
• Pressure gauges specials
  If you are looking for a special pressure gauge for specific purposes, check out our specials. Many of these special manometers are also readily available in our inventory. Think of precision gauges, oxygen pressure gauges, or deep-sea manometers. Explore and find exactly what you are looking for!
• Digital pressure gauges
  We have a separate category for all our digital pressure gauges with various features and extras in different accuracy classes. These manometers are often available directly from our inventory.

If you can’t find what you need or have trouble deciding, please don’t hesitate to contact us. W are here to provide you with expert advice and help you choose the right manometer for your application.

Calibration and repairs

It’s important to have your pressure gauge periodically checked to ensure optimal operation and prevent further issues. At EMVO Techniek, we also offer calibration and repair services. We are here to assist you in our state-of-the-art calibration and repairing station. If you would like to add an imprint, such as your logo, to your pressure gauge, we can also help you with that.

Contact us without any obligation

Whether you want to order a pressure gauge from EMVO Techniek, need your manometer checked ore repaired, seek tailored advice, ore have any questions, don’t hesitate to contact us without obligation. We are here to assist you. You can reach EMVO Techniek at +31(0)413 473037. You can also request a quote at any time, and we will make sure you receive a suitable offer promptly.