A flow meter can be installed perfectly in the pipe and still give the wrong reading at the PLC. The cause is often simple: the output type, wiring, power supply, or scaling does not match the receiving device. Connecting a flow meter is not only an electrical task. The meter must suit the process, the pipe must stay full where required, the flow direction must match the arrow on the body, and the signal must be interpreted correctly by the PLC, display, or data logger. This
