Welcome to KELLER, Europe\'s leading manufacturer of isolated pressure transducers and transmitters.

Europe’s leading manufacturer of isolated pressure transducers and transmitters
- Pressure ranges from 5 mbar to 2000 bar
- High volumes at low prices, great flexibility, highest accuracies
- Production of more than one million pressure transducers and transmitters per year
- KELLER is certified according to ISO 9001:2008

Highly Precise Pressure Transmitters Series 33 X

Digital Output of Transmitter:
This high precision of 0,01 %FS is available as an option (the standard Series 33 X has an accuracy of 0,05 %FS). These Series are based on the stable, floating piezoresisitive transducer and the newly developed XEMICS micro-processor with integrated 16 bit A/D converter. Temperature dependencies and non-linearities of the sensor are mathematically compensated.

Piezoresistive OEM Pressure Transmitters Series 4 LC…9 LC

The Series 4 LC…9 LC family of miniature OEM pressure transmitters combines a piezo resistive pressure sensor with -40…150 °C-capable signal conditioning in one compact, easy-to-integrate package.

The "LC" line of miniature pressure transmitters leverages Keller's extensive background in high-stability piezoresistive pressure sensors and innovative digital signal processing. Now, both pressure sensor and signal processor are integrated into a miniature, hermetically-sealed housing no larger than was once required for the sensor only!

High-Precision Pressure Level Transmitter Series 36 Xi W (CTD)

The 36 Xi W series is based on the proven KELLER 36 X W series using the high-quality 10 L-series pressure transducer. All series X pressure level transmitters feature an RS485 interface, which provide pressure and temperature standard, while versions requiring higher accuraty, temperature or conductivity sensor are available options. Multi-parameter probes fitted with pressure, temperature and conductivity sensors (CTD – conductivity, temperature, depth), are approximately 90 mm longer.

High-Resolution Manometer LEO 5 with Peak and Recording Function

The LEO 5 combines the notable features of Keller’s successful LEO-Record and LEX 1 digital pressure gauges, featuring an IP66-rated stainless steel enclosure. This robust housing combines contemporary microcontroller-based electronics and capacitive-touch controls, operated through the environmentally-sealed safety glass front panel. The large backlit LCD display ensures readability in any lighting conditions.

Ultra-Fast Miniature Pressure Transducer

The piezoresistive pressure transducers Series M5 are ideal, thanks to the M5 fine thread, for taking measurements at close proximity in places where access is a problem and in very thin pipes – exactly the kinds of conditions associated with engine test benches. The front-flush design prevents gas bubbles interfering with fluid measurements and supports measurements up to 200 °C without a cooling adapter. The extreme dynamic range of 0...50 kHz makes it possible to record very fast pulsations just as reliably as those associated with static pressure values. A vibration-resistant Teflon FEP cable (IP67) ensures the 80 mV output signal is routed securely out of the hot environment and then onwards for processing.