repetitively computing the present rate of {TAIL ~ change} of the weight of the utensil contents and generating {HEAD ~ a signal representative} of the present rate 
repetitively computing the present rate of { TAIL ~ change } of the weight of the utensil contents and generating { HEAD ~ a signal representative } of the present rate
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH