Application Notes
EAP-031065

When measuring the quantity contained in a storage tank, how can I measure the amount already used up, rather than the amount presently contained within the tank? MS Word


Derive the used amount from a value obtained by a level or weight-measuring transmitter using the reverse calculation function of the M2UDS Reverse Transmitter.

Details: The function of a Reverse Transmitter is to take an input signal, invert it and produce an inverted output signal. For example, an inverted input signal of 100% produces an output signal of 0% and vice-versa. i.e. Output % = 100% - Input %

In the graph, the dotted line is the output value of a sensor measuring the quantity remaining in the tank. The unbroken line is the output value calculated by the Reverse Transmitter, which shows the inverse value of the sensor and therefore indicates 'how empty the tank is', i.e. the amount used up since the tank was last filled to 100%.

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