Electronic scale and method for weight measurement including correction means for correcting a weight dependent signal

US7361867B2 · kind B2 · utility

Assignee

• Sartorius AG · DE

Inventors

• Jan Von Steuben · Oettingen, DE
• Michael Mueller · Nagold, DE
• Alfred Klauer · Göttingen, DE

Key dates

• Filing date: May 8, 2006
• Grant date: Apr 22, 2008
• Expiry date: May 25, 2026

Classification

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

Abstract

A scale having an electronic weighing system to generate a weight-dependent signal and a digital signal processing unit (18). The digital signal processing unit (18) has a circuit or program parts which measure the time elapsed since connection of the voltage to the scale. To dramatically reduce the time required for the scale to reach its full accuracy after connection of the voltage supply, the digital signal processing unit (18) has computation modules (34, 35) that correct the weight-dependent signal generated by the weighing system by a correction value that depends on the time elapsed. The magnitude of this correction value, starting from an initial correction value, converges with increasing time elapsed to a constant end value that differs from the initial correction value.