Bourdoncsöves

Bourdoncsöves is a term that refers to a type of pressure gauge that utilizes a curved, flattened tube, known as a Bourdon tube, to measure pressure. This tube is sealed at one end and connected to the pressure source at the other. As pressure increases, the tube tends to straighten, and this movement is mechanically translated to a pointer that indicates the pressure on a calibrated dial. Conversely, a decrease in pressure causes the tube to return to its original curved shape.

The Bourdon tube is typically made of a metal alloy, such as brass or stainless steel, chosen for its elasticity and resistance to corrosion. The shape of the tube can vary, with common forms including a C-shape, a helical coil, or a spiral. The choice of shape influences the sensitivity and range of the gauge. C-shaped Bourdon tubes are common for general-purpose applications, while helical or spiral designs offer greater sensitivity and are used for measuring lower pressures or requiring finer resolution.

Bourdoncsöves gauges are widely used across various industries, including manufacturing, HVAC systems, automotive, and process control. They are known for their relative simplicity, durability, and cost-effectiveness. While they are generally accurate, their accuracy can be affected by factors such as temperature changes, vibration, and the age of the Bourdon tube. Regular calibration is often recommended to maintain their precision. The principle behind the Bourdoncsöves gauge has been a fundamental method for pressure measurement for over a century.