Keller sensors can measure pressures ranging from 5 mbar to 2,000 bar. In addition, Keller-Druck is and ISO 9001 certified manufacturer. They have many standard products such as digital pressure gauges, level probes, data loggers, software, wireless solutions, and accessories. They can also design custom solutions to meet your industry needs. Keller provides complete services from production to installation and final calibration of the sensor on the finished application.
The sensor chip is a one-millimeter thick crystalline silicon disc that deforms and changes shape based on pressure intensity. This deformation causes the electrical resistance to change, providing a measurement that is based on the change in resistance of the disc. This change in resistance is reflected as a value on the readout. The silicon chip is bonded to a glass backing to create a vacuum and a closed reference space. The sealed gauge is protected by a pressure-tight metal housing that is filled with oil, which acts as a transmission medium. The advantage of this design is that the system gives no sign of fatigue even after repeated pressure cycles.
Keller pressure sensors use both piezoresistive strain and capacitive changes in a diaphragm. Piezoresistive sensors can be used for gauge, differential, absolute, or relative measurement applications. The output of these gauges is stable over time, which means that they will provide reliable measurements for a long service life.
Keller is known as a world leader in piezoresistive sensors. Their sensors are used in military vehicles, the paint industry, and for monitoring pressure in oil and gas exploration and extraction applications. Their sensors also provide critical information aboard the International Space Station (ISS). This experience means that they can design a solution that suits your needs and operating environment.
