What principle does a differential pressure transmitter rely on for accurate measurements?

A differential pressure transmitter relies on the pressure differential principle for accurate measurements. This type of device measures the difference in pressure between two points, which is crucial in various applications such as flow measurement, level measurement, and filter monitoring. The operation of the transmitter involves a sensing element that converts this pressure difference into an electrical signal, which can then be transmitted to a control system or display for monitoring or control purposes.

By accurately measuring the pressure differential, the transmitter can provide vital information about the process being monitored, allowing for effective regulation and adjustments. For instance, in flow measurement, the differential pressure can be correlated to flow rate based on known equations, making it essential for process control. This principle underpins the functionality of differential pressure transmitters and is fundamental to their design and application in industry.