Weighing scale with preset means for concrete mixing plants

G - Physics – 01 – G

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265/14

G01G 23/18 (2006.01) B28C 7/02 (2006.01) G01G 1/04 (2006.01) G01G 23/365 (2006.01) G01G 23/37 (2006.01)

Patent

CA 1221114

A B S T R A C T This invention concerns a weighing scale control unit (10) for concrete mixing plants which comprises in coordinated cooperation: - a one-pendulum balance beam (14), a transducer (19) able to monitor the value of the displacement of the one-pendulum balance beam (14) and to convert that value into an electrical analogue signal, - an analogue-digital converter (24) to convert that signal, - and a numerical display (25), programming means (27-127) to pre-set the weight for each component to be weighed and a comparator (26) to compare the value monitored with the pre-set value being also included. The invention also concerns a procedure for the reading of values of weight with a weighing scale control unit (10) for concrete mixing plants, the control unit (10) being constitut- ed according to the foregoing details, in which procedure an analogue signal coming from a transducer (19) is converted into a digital signal by a converter (24) and is then compared by a comparator (26) with a value pre-set on a programming means (27) in relation to the component being batched, the digital signal being shown on a numerical display (25).

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