Pressure measurements

Diaphragm pressure gauge

Diaphragm pressure gauge

The diaphragm pressure gauge consists of a circular membrane, that is made from sheet metal of precise dimensions, which can either be flat or corrugated. The diaphragm is mechanically connected to …

3 Types of pressure and units from around the world

3 Types of pressure and units from around the world

Pressure is always linked to a certain reference point, whether it is absolute pressure, gauge pressure or differential pressure. The unit reflects the type of pressure …

How to select a pressure gauge?

How to select a pressure gauge?

The scale range must be chosen so that the measured process pressure is between 1/3 and 2/3 of the scale range. In this area the gauge reaches its highest accuracy. As a rule of thumb you can say that the measurement range should be…

Bellows pressure gauge

Bellows pressure gauge

Bellows are thin-walled metallic cylinders, with deep convolutions, of which one end is sealed and the other end remains open. The closed end is always moveable while the open end is fixed. When pressure is applied …

Bourdon tube pressure gauge

Bourdon tube pressure gauge

The Bourdon tube pressure gauge consists of a circular tube which is bent over an angle of generally 270°, and of which one end is closed and the other is connected to the process pressure. The closed end can move freely. This movement is transmitted via …

Potentiometric pressure transducer

Potentiometric pressure transducer

The use of pressure measurements dates back to the mid-19th century when the first mechanical pressure measurements were invented. The working principle was based on a balanced spring or a Bourdon tube, and the indication …

Introduction to pressure measurement

Introduction to pressure measurement

The use of pressure measurements in the industry is becoming more and more widely spread. Pressure is the second most measured process variable after temperature. Millions of pressure measurements are produced every year to …

Capsule pressure gauge

Capsule pressure gauge

The sensing element of a capsule pressure gauge consists of two corrugated diaphragms welded together at their periphery to form a capsule. The pressure to be measured is introduced into the capsule via an opening in …

Meaning of symbols on the dial of a pressure gauge

Meaning of symbols on the dial of a pressure gauge

What can you learn about a pressure gauge by just looking at the dial? A lot of information can be found on the gauge itself. This article covers all information and symbols present …

Safely designed pressure gauges

Safely designed pressure gauges

The majority of pressure gauges are designed according to an industry standard. This standard sets out the rules to which a product must comply. Topics such as overall dimensions, pressure ranges, accuracy classes, tolerances,…

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