The Bernoulli Principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid’s potential energy.
As a result, devices known as venturis have been used for years to measure flow rates by detecting this change in pressure.
Consequently, and operator can connect the high pressure side of differential pressure gauge to the larger diameter and can connect the low pressure side of the differential pressure gauge to the smaller diameter, a flow rate can be measured.
Furthermore, using a differential pressure gauge in flow rate applications can:
- Provide direct feedback of flow rate
- Be the most robust solution that lasts for years and far outperform electronic alternatives