Red Seal Instrumentation and Control Technician Practice Exam

What is one function of a pressure transmitter in an industrial setting?

1. To reduce fluid pressure

2. To transmit pressure readings to control systems

3. To generate electricity from pressure

4. To store pressure data

The correct answer is: To transmit pressure readings to control systems

A pressure transmitter in an industrial setting primarily functions to convert the physical pressure of a fluid into an electrical signal that can be transmitted to control systems. This function is critical for process control, as it allows operators or automated control systems to monitor and adjust processes based on real-time pressure measurements. The transmitted data can help ensure that systems operate within safe and efficient pressure ranges, enabling better control and optimization of operations. The other options represent functionalities that do not accurately reflect the role of a pressure transmitter. Reducing fluid pressure is accomplished using devices like pressure regulators or control valves, which actively manage the pressure rather than simply measuring it. Generating electricity from pressure is not a function of a pressure transmitter; that would more accurately describe a piezoelectric device. Similarly, while data can be logged or stored by other systems, pressure transmitters themselves do not serve to store data but rather focus on the immediate transmission of pressure readings.