Allen-Bradley
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Allen-Bradley is a company that specializes in industrial control and automation products, such as programmable logic controllers. It is based in Milwaukee, Wisconsin, and is currently part of Rockwell Automation. The Allen-Bradley Clock Tower is a Milwaukee landmark that opened in 1962.
History
The company was initially founded as the Compression Rheostat Company by Lynde Bradley and Dr. Stanton Allen with an initial investment of $1,000 in 1903. In 1910 the company was renamed the Allen-Bradley Company. In 1985 a new company record was set as they ended the fiscal year with 1 billion dollars in sales. On February 20th, 1985 Rockwell Automation purchased Allen-Bradley for $1.651 billion, which is the largest acquisition in Wisconsin's history.
Allen-Bradley is a name associated with good quality low temperature sensors, since a now obsolete line of carbon-composite resistors manufactured by Allen-Bradley show an approximately inversely proportional temperature dependence at low temperatures. This undesirable characteristic for commercial resistors (since an ideal resisor should have no temperature dependence) is suited for cryogenic measurement, which paradoxically has partly helped establish a name for Allen-Bradley among the lay electronic enthusiast. Allen-Bradley resistors are commercially available at a premium, often supplied with calibration data.
Competitors
Allen-Bradley's principal competitors include:- Cutler-Hammer (Eaton Corporation)
- General Electric
- Siemens
- Square D (Schneider Electric)
- Emerson Electric Co.
- Endress + Hauser
- Yokogawa
- Invensys Foxboro
External links
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