What kind of output signal does a differential pressure transmitter provide?

A differential pressure transmitter provides a proportional output signal that corresponds to the difference in pressure across two points. This output signal is typically standardized to a range, such as 4-20 mA or 0-10 V, which allows for continuous monitoring and measurement. The proportionality means that as the differential pressure changes, the output signal reflects that change proportionately, allowing for accurate and real-time data transmission to control systems or monitoring equipment.

This proportional output is crucial for processes that depend on maintaining specific pressure differentials, as it enables operators to make informed decisions based on the data received. By using the proportional output from the transmitter, control systems can adjust valves, pumps, or other equipment to maintain optimal operating conditions, ensuring efficiency and safety in the process.

Other options do not reflect the primary function of a differential pressure transmitter. Visual alarms represent a notification system rather than a measurement signal. A binary output would indicate only two states (on/off) and is not suitable for conveying the nuanced information that differential pressure measurements provide. An analog input for other devices implies that the device gives a signal to be inputted, but the differential pressure transmitter itself instead generates an output based on pressure differences.