Which type of transducer may convert a 0-5 volt signal to a 4-20 mA signal?

The ability to convert a 0-5 volt signal to a 4-20 mA signal is a function typically associated with electrical or instrument transducers. These transducers are designed to facilitate the conversion of different types of signals for effective communication and processing within control systems.

The 4-20 mA signal standard is commonly used in industrial applications because it provides several advantages, such as being less susceptible to signal degradation over long distances and allowing for the detection of faults, like a broken wire (which would cause a current below 4 mA). The range of 4-20 mA is used because it provides a low-end value that indicates a functioning system (4 mA) and ensures that zero signal conditions can be detected.

While pressure, temperature, and velocity transducers may also provide valuable measurements and outputs, they typically do not focus on signal conversion from voltage to current in the same way that an electrical or instrument transducer does. Instead, their primary function is to measure specific physical parameters, which may then be converted by an associated instrument or converter for compatibility with control systems.