A pressure gauge is a device used to measure the pressure of a fluid (liquid or gas) in a system. It consists of a dial with a needle that indicates the pressure of the fluid, and a connection point that attaches to a pipe or hose where the pressure is being measured.
Pressure gauges can be used in a wide range of applications, including HVAC systems, hydraulic systems, pneumatic systems, and irrigation systems. They are typically calibrated to measure pressure in units such as pounds per square inch (PSI), bar, or kilopascals (kPa).
In an irrigation system, a pressure gauge is often installed on the main water supply line or on a zone valve to monitor the pressure of the water as it flows through the system. This can help to ensure that the system is operating efficiently and that the correct amount of water is being delivered to the plants or grass.
Operation and test
Simpler gauges must show the correct information when the pipes are under pressure.
The static pressure of the system is shown when none of the zones are running. Whilst every zone has its own dynamic pressure that can be read when the emitters are running at their full capacity.
It worth to make notes of static and dynamic values after installation of the system and every changes made of a zone for later reference.
Proper maintenance of the pressure gauge is important to ensure accurate readings and to prevent damage to the gauge. Regular calibration and cleaning can help to prevent clogs and ensure that the gauge is reading correctly. If the pressure gauge shows a significant change in pressure or stops working altogether, it may be a sign of a problem with the irrigation system and should be checked by a professional.