Pressure Gauge Manufacturers

A pressure gauge is a device that is used to measure the pressure of a gas or a liquid within a closed system. It is a mechanical instrument that consists of a Bourdon tube (a curved, hollow metal tube) that is connected to the system being measured. When pressure is applied to the Bourdon tube, it straightens out and moves an indicator needle on a circular dial, which displays the pressure reading in the appropriate units (e.g. psi, kPa, bar).
The key components of a pressure gauge include:
Bourdon tube: This is a curved, hollow metal tube that is closed at one end and open at the other end. When pressure is applied to the tube, it will straighten out and its cross-sectional area will increase. This deformation is proportional to the pressure applied and is used to measure the pressure.
Casing: The bourdon tube is housed inside a metal casing that protects it from external damage and helps to contain the pressure.
Pointer: The pointer is connected to the bourdon tube and moves in response to its deformation. It is used to indicate the pressure reading on the gauge.
Dial: The dial is marked with a scale that shows the pressure readings in units of measurement such as PSI, Bar, or kPa.
Movement: The movement is the mechanism that translates the deformation of the bourdon tube into the movement of the pointer.
Connection: The connection is the point where the gauge is attached to the system being measured. This can be a threaded or flanged connection depending on the application.
When pressure is applied to the bourdon tube, it will straighten out and its cross-sectional area will increase. This deformation is transmitted through the movement and causes the pointer to move, which indicates the pressure on the dial. The reading on the dial can be read directly in the units of measurement specified on the scale.

When selecting a pressure gauge for a particular application, there are several factors to consider, including:
Pressure range: The pressure gauge should be selected based on the expected pressure range of the system being measured. It is important to choose a gauge that has a range that includes the expected maximum pressure of the system to avoid damaging the gauge or obtaining inaccurate readings.
Accuracy: The accuracy of the gauge is an important consideration, particularly in applications where precise pressure measurements are required. Gauge accuracy is typically expressed as a percentage of full scale, with higher accuracy gauges having a smaller percentage error.
Operating environment: The operating environment of the system being measured should be taken into consideration. Factors such as temperature, humidity, and exposure to corrosive or hazardous materials can impact the selection of a pressure gauge.
Mounting requirements: Pressure gauges can be mounted in a variety of ways, including panel-mounted, surface-mounted, and direct-mounted. The mounting requirements of the application should be considered when selecting a gauge.
Dial size: The dial size of the gauge should be chosen based on the viewing distance and the level of detail required in the pressure reading. A larger dial may be necessary for applications where the gauge needs to be viewed from a distance.
Media compatibility: The media being measured should be compatible with the materials used in the gauge. For example, if the media is corrosive or reactive, a gauge with materials that are resistant to corrosion and chemical attack may be required.
Vibration and shock resistance: In applications where there is significant vibration or shock, a gauge with vibration and shock-resistant features may be necessary to ensure accurate and reliable readings.
By considering these factors, the appropriate pressure gauge can be selected for a particular application to ensure accurate and reliable pressure measurements.