Weighing scales – Self-positioning – Electrical current generating or modifying
Patent
1992-01-23
1993-08-03
Miller, Jr., George H.
Weighing scales
Self-positioning
Electrical current generating or modifying
G01G 314
Patent
active
052320634
ABSTRACT:
A weighing scale includes a vibratory string force measuring device (1) the frequency of which varies as a function of the applied load. The load signal from the vibratory string device is supplied to a microprocessor (8) where it is processed with a first frequency signal supplied by a temperature-responsive first quartz oscillator (9), thereby to produce a load measurement output signal (GW), the first frequency signal serving also as the clock signal for the microprocessor. The microprocessor also compares the first frequency signal with a second frequency signal supplied by a temperature-independent second quartz oscillator (11), thereby to produce a temperature compensation signal (TW).
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Mettler-Toledo AG
Miller Jr. George H.
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