Pressure gauges

Key Features and Functions:

1. Pressure Measurement: Pressure gauges utilize mechanical, electrical, or digital mechanisms to measure the force exerted by a fluid or gas on a sensing element within the gauge. The sensing element translates this force into a linear or rotational displacement, which is then converted into pressure readings displayed on the gauge face or digital screen.
2. Analog and Digital Displays: Pressure gauges are available with analog dial displays or digital readouts, offering different levels of accuracy, readability, and versatility. Analog gauges feature a needle or pointer that moves across a calibrated scale, while digital gauges provide numerical pressure readings with high precision and resolution.
3. Pressure Range: Pressure gauges are designed to measure a wide range of pressure values, from low-pressure applications (e.g., vacuum or atmospheric pressure) to high-pressure environments (e.g., hydraulic systems or industrial processes). Gauges are selected based on the specific pressure range and resolution required for the application.
4. Pressure Units: Pressure gauges support various units of measurement, including pounds per square inch (psi), bar, kilopascals (kPa), inches of mercury (inHg), and others. The gauge may feature multiple scales or selectable units to accommodate different measurement standards and user preferences.
5. Accuracy and Precision: The accuracy and precision of pressure gauges vary depending on factors such as gauge type, calibration, and manufacturing quality. Gauges may be rated for different levels of accuracy, typically expressed as a percentage of full-scale value (%FS), and calibrated periodically to maintain accuracy over time.
6. Pressure Connection: Pressure gauges feature threaded or flanged connections for interfacing with the system under pressure. Common connection types include NPT (National Pipe Thread), BSP (British Standard Pipe), and DIN (Deutsche Industrie Norm) standards, with options for straight, angled, or panel-mounted configurations.
7. Pressure Gauge Types: There are several types of pressure gauges designed for specific applications and environments, including:
   • Bourdon Tube Gauges: Utilize a curved tube that flexes in response to pressure changes.
   • Diaphragm Gauges: Employ a flexible diaphragm that deforms under pressure to produce a measurement.
   • Differential Pressure Gauges: Measure the difference in pressure between two points in a system.
   • Digital Pressure Gauges: Utilize electronic sensors and displays for precise pressure measurement and data logging.
   • Absolute Pressure Gauges: Measure pressure relative to a perfect vacuum (absolute zero pressure).
8. Overpressure Protection: Some pressure gauges are equipped with built-in overpressure protection mechanisms, such as pressure relief valves or dampeners, to prevent damage to the gauge from pressure spikes or excessive loads beyond the rated capacity.