- Patent Title: Electromagnetically force-compensating force-measuring apparatus
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Application No.: US14511900Application Date: 2014-10-10
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Publication No.: US09702752B2Publication Date: 2017-07-11
- Inventor: Heinrich Feldotte , Heyko Holst
- Applicant: Sartorius Lab Instruments GmbH & Co. KG
- Applicant Address: DE Goettingen
- Assignee: Sartorius Lab Instruments GmbH & Co. KG
- Current Assignee: Sartorius Lab Instruments GmbH & Co. KG
- Current Assignee Address: DE Goettingen
- Agency: Edell, Shapiro & Finnan, LLC
- Priority: DE102012103037 20120410
- Main IPC: G01G7/04
- IPC: G01G7/04

Abstract:
An electromagnetically force-compensating force-measuring apparatus (100) that includes a force dependent support coil (2) and an integrating analog/digital converter (10; 10′) that converts the coil current (IS) into a digital output signal. A current/voltage converter (6) is connected downstream of the support coil (2), the output of the current/voltage converter being connected to a measurement voltage input (14) of the analog/digital converter (10; 10′) and to the input of a voltage amplifier (8). The resistance value of a first heating resistor (RSH) is equal to the resistance value of the support coil (2), the resistance value of a second heating resistor (RWH) is equal to the conversion factor (RW) of the current/voltage converter (6) and the gain factor of a voltage amplifier (8) is equal to the ratio of the resistance value of the first heating resistor to the resistance value of the second heating resistor.
Public/Granted literature
- US20150027792A1 Electromagnetically Force-Compensating Force-Measuring Apparatus Public/Granted day:2015-01-29
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