The example of a complex loop diagram in Figure 6 is from ISA-5.4. It shows an orifice-plate-based flow transmitter (which uses a differential pressure transmitter to read the flow based on the ...

Two-wire advantage Two-wire flow measurement has traditionally been limited to relatively unsophisticated technologies, such as variable area, differential pressure, positive displacement, and turbine ...

The Echotel Model 355 two-wire ultrasonic transmitter for level, volume and open-channel flow applications is a family of loop-powered transmitters that features HART digital communications ...