Electric balance

US4656599A · kind A · utility

Assignee

• Sartorius AG · DE

Inventors

• Erich Knothe · Bovenden, DE
• Franz-Josef Melcher · Hardegsen, DE
• Jurgen Ober · Hardegsen, DE
• Christoph Berg · Oettingen, DE
• Klaus Dardat · Dransfeld, DE
• Eduard Bierich · Hann. Münden, DE
• Gunther Maaz · Uslar, DE

Key dates

• Filing date: Oct 26, 1984
• Grant date: Apr 7, 1987
• Expiry date: Oct 26, 2004

Classification

• Technology area (CPC G): Physics
• CPC primary: G01G23/48
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

It is necessary, when high requirements are demanded from balances, that the effect of different disturbance variables such as, e.g., temperature and/or moisture on the measuring system be corrected. To this end, temperature and moisture sensors are used from whose output signal correction values are calculated. The invention suggests that a storage area be provided into which the instantaneous measured results of these sensors are stored in succession, where they remain stored for a set time. This data stemming from different times, evaluated with set weighting factors, could then be used to calculate the corrections. This makes it possible to obtain a good correction of changing disturbances even with a different behavior in time of sensors and measuring system.