Keller America, Inc.

Keller has earned its place in the History of Pressure Measurement, as it is closely connected with the development of the piezoresistive technology.

In the 60's, company founder H. W. Keller developed the first integrated silicon pressure measuring cell at the Honeywell Research Center in Minneapolis. He also patented the integrated production method of this silicon cell in the United States. Products of National Semiconductor, Foxboro, and Honeywell have been directly or indirectly developed on the basis of this work.

At the beginning of the 1970's, Mr. Keller developed the first piezoresistive pressure transducer with a steel housing. Shortly thereafter, in 1975, H.W. Keller founded his own company, Keller AG für Druckmesstechnik. From humble beginnings, Keller AG has grown to a worldwide leader in pressure measurement solutions. From the advent of the Series 10 OEM pressure transducer, to the complete lineup of specialty pressure transmitters, Keller AG remains at the leading edge of development and innovation. With the advent of inexpensive, miniaturized microprocessors, Keller continues to advance the state-of-the-art with Total Error Band performance not possible just a few short years ago. Annual sensor production, combining OEMs with our own transmitter products, now exceeds 1 million pieces.

Doing business with Keller is easy and providing our customers with superior value is a way of life.

At Keller, innovation ensures that neither we, nor our customers, fall victim to the 'Malady of the Five Monkeys', a story that illustrates why so many companies lack the innovative spirit that is crucial to growth and prosperity. At Keller, we choose to take a different path.

Most inquiries are answered within 24 hours and standard delivery on US-assembled products is only 3 business days ARO.

Whereas many pressure measurement technologies are best suited for specific markets, the universal nature of the technologies embedded in Keller products results in our influencing virtually every worldwide market for pressure measurement.

Keller sensors can be found deep inside the earth in oil & gas reservoir monitoring tools. Miniature Keller pressure sensors travel the oceans aboard migrating marine mammals, providing depth information critical to conservation programs. Municipal wastewater plants benefit from Keller level transmitters, which set the standard for reliability and cost-effectiveness. As well, doctors depend on Keller sensors for accurate control of a variety of medical devices. High above the earth, our transmitters are hard at work providing accurate cabin pressurization information on commercial aircraft.

At Keller, we are committed to continuing development of existing technologies as well as pioneering innovations that enable us to break into new markets previously dominated by others. Full scale ranges from only 4 inches of water Full Scale up to 29,000 PSI are all within the Keller capability, as are operating temperatures from -55 to 200°C. No matter what your market, Keller can offer a tailored solution.