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Sensors 2010, 10(9), 8452-8465; doi:10.3390/s100908452
Article

A High-Sensitivity Hydraulic Load Cell for Small Kitchen Appliances

1,*  and 2
1 BSH Hišni aparati d.o.o., Savinjska cesta 30, 3331 Nazarje, Slovenia 2 Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
* Author to whom correspondence should be addressed.
Received: 13 July 2010 / Revised: 18 August 2010 / Accepted: 6 September 2010 / Published: 9 September 2010
(This article belongs to the Section Chemical Sensors)
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Abstract

In this paper we present a hydraulic load cell made from hydroformed metallic bellows. The load cell was designed for a small kitchen appliance with the weighing function integrated into the composite control and protection of the appliance. It is a simple, low-cost solution with small dimensions and represents an alternative to the existing hydraulic load cells in industrial use. A good non-linearity and a small hysteresis were achieved. The influence of temperature leads to an error of 7.5%, which can be compensated for by software to meet the requirements of the target application.
Keywords: Hydraulic load cell; FEM, sensor; weighing Hydraulic load cell; FEM, sensor; weighing
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Pačnik, R.; Novak, F. A High-Sensitivity Hydraulic Load Cell for Small Kitchen Appliances. Sensors 2010, 10, 8452-8465.

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