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Датчики KELLER

KELLER Pressure Sensors — Swiss Precision in Measurement

KELLER AG is a Swiss manufacturer specializing in the development and production of piezoresistive pressure sensors since 1974. The company is a pioneer in isolated silicon pressure sensor technology and supplies products for industrial automation, water management, hydraulics, and pneumatics worldwide.

Our catalog features KELLER Series 22 pressure sensors with measurement ranges from 1 to 12 bar and from 0 to 30 bar. These pressure transmitters deliver high measurement accuracy in demanding industrial environments and are distinguished by their long service life, thanks to quality materials and robust construction.

Advantages of KELLER Sensors

  • Swiss quality — over 50 years of experience in pressure sensor manufacturing
  • Piezoresistive technology — high accuracy and reading stability throughout the entire service life
  • Wide pressure range — models from 1 to 30 bar for various applications
  • Industrial-grade design — resistance to vibrations, temperature fluctuations, and aggressive media

KELLER Pressure Sensor Applications

KELLER pressure sensors are used in pressure monitoring systems, hydraulic and pneumatic installations, water supply, HVAC systems, and industrial automation. Their compact size and reliable analog output make them easy to integrate into existing control systems.

Order KELLER pressure sensors from Chastotnik online store with delivery across Ukraine. Our sensor catalog also features sensors from other leading manufacturers: Endress+Hauser, Siemens, and Sick.

Frequently Asked Questions

Which types of industrial sensors are available in the catalogue?

The range encompasses inductive and capacitive proximity switches, photoelectric sensors, industrial pressure transmitters for liquids/gases, and submersible hydrostatic level probes from WIKA, Sick, Pepperl+Fuchs, Omron, and IFM.

What is the distinction between PNP and NPN output types in proximity sensors?

PNP sensors switch the positive supply rail (+24 VDC) to the signal output (sourcing). NPN sensors switch the negative supply rail (0 VDC) to the output line (sinking). European PLCs standardise on PNP inputs, while Asian controllers frequently utilize NPN.

What are the common standard analog output signals?

The primary industrial standard is the 4-20 mA current loop due to high noise immunity and transmission over several hundred metres without voltage drop. Voltage outputs such as 0-10 VDC or ratiometric 0.5-4.5 V are also widely utilized.

How do you specify environmental IP ingress protection for sensors?

Dry automation machinery utilizes IP65. Areas subjected to water spray or direct washdown require IP67 submersible-rated enclosures, while continuous liquid immersion in boreholes and vessels mandates IP68.

Are calibration certificates and manufacturer documentation included?

Yes. Measuring instruments from WIKA, Pepperl+Fuchs, and Sick are supplied with official factory test sheets, calibration reports, and 12 to 24-month warranties.