About pressure 

In the International System of Units, the unit of pressure is Newton per square meter, also known as Pascal (Pa), which is defined as the pressure generated by a force of one Newton acting vertically and uniformly on an area of one square meter. which is

Pa=N/m<sup><sub>2

Pa----unit of pressure
N-----unit of force</sub></sup>
m²---unit of area

The unit used for pressure gauges is Pa. The pressure meter measures pressure (pressure)

Commonly used pressure unit names and conversions

1bar=10⁵Pa=100KPa=1atm(Standard atmospheric pressure)=0.1MPa
1kgf/cm²=0.0980665MPa=1at(Engineering atmosphere)
1psi=6.8947kPa=0.068947bar=0.0068947MPa
1kPa=0.14504psi=0.01bar
1MPa=10³kPa=10³*10³Pa
1MPa=10bar=145.04psi
 

Application

The application of pressure gauges is extremely common, and it covers almost all industrial processes and scientific research fields. In heating pipe networks, oil and gas transmission, water and gas supply systems, vehicle repair and maintenance factories, etc., pressure gauge applications can be seen everywhere.

Gauge type

1. According to display mode: divided into pointer type and digital type
2. According to measurement accuracy: precision type and conventional type
3. According to measurement sensitive components: divided into spring tube (Bourdon tube) type, diaphragm type, diaphragm type, etc.
4. According to the different standards of the indicated pressure: it is divided into general type, absolute pressure type, and differential pressure type. 5. According to the characteristics of use: divided into corrosion-resistant type, vibration-resistant type, diaphragm type, electrical contact type, remote transmission type, etc.

Specification

According to the nominal diameter, the commonly used ones are Φ40mm, Φ50mm, Φ60mm, Φ75mm, Φ100mm, Φ150mm, Φ200mm, Φ250mm, etc.

Accuracy level

Common accuracy levels, such as 2.5, 1.6, 1.0, 0.4, 0.25, etc.