Microwave water in crude monitor

A system for measuring the percent quantity of water in crude oil flowing in a pipe line comprising cell means arranged with pipe line so that the crude oil flows through the cell means, microwave transmission means spatially arranged with the cell means for transmitting microwave energy through the crude oil flowing through the cell means, receiver means spatially arranged with the cell means for receiving the transmitted energy and for providing a signal corresponding to the received energy, and means connected to the receiver means for providing an indication of the quantity of water in the crude oil, said indicating means includes means for providing reference signals, each reference signal corresponding to a different percent water content of the crude oil, comparing means connected to the receiver means and to the reference signal means for comparing the signal from the receiver means with the reference signals to provide a signal corresponding to the percent water content of the crude oil, decoding means connected to the comparing means for providing control signals in accordance with the signals from the comparing means, display signal means for providing display signals corresponding to different percent content of water of the crude oil, switching means connected to the decoding means and to the display signal means for selecting the proper display signals in accordance with the control signals from the decoding means to provide selected display signals, and display means connected to the switching means for providing a display in accordance with the selected display signals, and wherein said reference signals means include an analog-to-digital converter means connected to the receiver means for providing digital signals corresponding to the signal from the receiver means, a plurality of reference signal channels connected to the analog-to-digital converter means and controlled to store appropriate digital signals ccorresponding to known percent water volume of the crude oil, and control signal means connected to the plurality of reference signal channels and to the decoding means for controlling the plurality of reference signals channels for different known conditions of the crude oil and for inhibiting the decoding means while developing the reference signals.