HISTORY

1958 The first experiences with weighing

In 1958, a young Nils Eilersen was approached by his father to build an electronic scale for the family furniture business (www.eilersen.eu) in order to measure if the wood was dry enough to be used for furniture production. This project later turned out to be the basis for the foundation of the company Eilersen Electric A/S. After many hours of work, Mr. Eilersen had a working scale based on strain gage load cells but Mr. Eilersen did not find the strain gage technology accurate enough and too sensitive to overloads and shocks.

1965 Discovering the capacitive technology

During his studies at the Technical University of Denmark, Mr. Eilersen was dedicated to looking for more robust and more accurate measuring principles. It was during his time at the university that he did his master theses on measuring capacitances.

After his studies, Mr. Eilersen was appointed development manager in a company developing industrial test equipment and he soon realized that the capacitive technology had a great potential in this business area. One of the company’s biggest sellers was an imported mechanical instrument for testing the pump pressure in diesel engines.

Mr. Eilersen then suggested the owner of the company to develop an electronic version of this test equipment but the owner of the company was not interested in this idea. As a result Mr. Eilersen then decided to start his own company.

1969–1975 The foundation of Eilersen Electric A/S

This led to the foundation of Eilersen Electric A/S in 1969 and as a result of hard dedicated work, Nils Eilersen was granted a patent in 1971 on measuring capacitances which was the measuring principle used in his electronic test equipment for diesel engines. The so-called “Diesel Tester” was used for measuring the pressure in the injection pumps in Diesel engines.

This product was a very big success and led to Robert Bosch GmbH buying an exclusive license to manufacture and sell the electronic diesel tester in 1972.

1976–1992 The first capacitive load cells

The many advantages of the capacitive load cell technology  were clear, so Mr. Eilersen decided to develop a load cell based on the capacitive measurement principle.

As a result this development work, Eilersen supplied the first load cell to a local pharmaceutical company in 1976. This was one of the first installations using stainless steel load cells for process weighing.

The Eilersen load cells were based on a patented simple and efficient capacitive measuring circuit, followed by a patent on the mechanical design of the non-contacting capacitive sensor.

The capacitive load cells differed from the standard strain gage load cells in many ways as the load cells were characterized by the robustness which provided a much higher tolerance to overloads. Another important feature was the ability to withstand transient voltages while providing an output signal which was 20 times higher than strain gage load cells which was an advantage at a time when amplifiers were expensive and not very stable.

During the 1980’s then the company was growing steadily and many different types of analog capacitive load cells were developed and supplied to a growing customer base worldwide.

Tidslinje

1969

Eilersen Electric A/S is founded by Nils Eilersen

1971

First patent on capacitive measuring principle is granted

1972

The first product based on a capacitive measurement principle is sold to Bosch Gmbh

1976

First stainless steel load cell for tank weighing

1979

Second patent on capacitance measurement

1980

First patented analog capacitive load cell is granted

1986

Eilersen Electric SA is founded in Switzerland

1990

Patent on digital capacitive load cells is granted

1996

First generation digital capacitive load cells

2005

Third patent on digital capacitance measurement is granted

2006

Patent on capacitive single point load cell is granted

2008

Second generation digital capacitive load cells

2013

Installations in more than 85 countries worldwide

2017

Third generation digital load cells

2017 

ISO 9001:2015 and IECEx certifications

2019

Fourth generation digital load cells released