WEIGHING SCALE WITH PRESET MEANS FOR CONCRETE MIXING PLANTS

摘要

A B S T R A C TThis invention concerns a weighing scale control unit (10)for concrete mixing plants which comprises in coordinatedcooperation:- a one-pendulum balance beam (14),a transducer (19) able to monitor the value of thedisplacement of the one-pendulum balance beam (14) and toconvert 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 eachcomponent to be weighed and a comparator (26) to compare thevalue monitored with the pre-set value being also included.The invention also concerns a procedure for the reading ofvalues of weight with a weighing scale control unit (10) forconcrete mixing plants, the control unit (10) being constitut-ed according to the foregoing details, in which procedure ananalogue signal coming from a transducer (19) is convertedinto a digital signal by a converter (24) and is then comparedby a comparator (26) with a value pre-set on a programmingmeans (27) in relation to the component being batched, thedigital signal being shown on a numerical display (25).