Diaphragm pressure gauges are instruments used to measure pressure in a closed system. They are composed of an elastic membrane, usually made of rubber or silicone, which is subject to the pressure of the fluid within the system and an indicator, usually a pointer or digital display, which shows the measured pressure. Pressure gauges are commonly used in many industries, including oil & gas, chemical, and food and beverage manufacturing, due to their ability to accurately measure pressure across a wide range of applications. Also, because the diaphragm is isolated from the fluid, these instruments are often preferred for measuring pressure in corrosive or hazardous fluids. The accuracy of these instruments depends on the quality of the elements, the sensitivity of the indicator and the stability of the system. These more accurate instruments are often factory calibrated and have a limited measurement range, but offer greater accuracy...