(Sensors measure physical parameters such as temperature, pressure, speed, and liquid flow rates ... The old-fashioned way to build a 4-20mA transmitter included a field-mounted device that sensed a ...

Pressure transmitters can also detect leaks or gas ... a need to sense an ac or dc voltage and provide a proportional 4 to 20mA analog or digital fieldbus output to a PLC. There is a lot of ...

Summary: This 16-page white paper discusses electronic marshalling—eliminating “cross-marshalling” to wired discrete and 4-20mA devices ... Maybe a pressure switch gets changed to a pressure ...

The M800 takes a 4-20mA signal from a range of pipeline transmitters and converts it into flowrate, total flow, pressure and temperature readings. Customers can choose whether to display flow ...