KELLER PRESSURE - Your Swiss pressure sensing specialist

The miniature pressure transducer M5 takes its name from the fine M5 thread at the sensor head that makes it possible to take measurements in places which are difficult to access and in narrow pipelines. Together with its ability to measure media at temperatures of up to 180 °C in a dynamic range from 0 to 50 kHz, this makes it ideally suited to measurements on engine test benches.

These low-cost miniature pressure transducers have been specially developed for very rapid hydrodynamic and aerodynamic in situ pressure measurements. The 2Mi sensors are available in a variety of housing designs and can simply be stuck on at the desired location. Despite its miniature design, the sensor chip is protected against external influences by a steel housing and a silicone elastomer coating. It can also be used in liquids.

These catheters are suitable for research and laboratory applications. Different sizes (4F to 8F) and modular design allow any sequence of sensor chips.

These miniature pressure probes are designed for measuring the flow and dynamic pressure of liquids and gases in pipelines. With diameters between 1,32 mm and 2,64 mm and a flexible yet robust cable, these probes can also be used in narrow ducts at depths of several metres.

The pressure transmitters of the 21C series with ratiometric 0,5...4,5V output combine chip-in-oil measuring cells with conventional electrical connections and pressure connections, making them ideal for industrial use. The transmitters are extremely resistant to environmental influences and deliver accurate measurement results over a temperature range of -40 °C to 125 °C.

The pressure transmitters of the 21Y series have no internal seal and a high insulation voltage of 300 VDC, and are extremely resistant to environmental influences. The sophisticated compensation circuit makes it possible to specify a narrow total error band. A wide range of pressure connections and electrical connections are available to choose from.

The pressure transmitters of the 23SY series are designed for elevated requirements in industrial applications. Thanks to its modular concept, this series is highly flexible and makes it possible to realise customer-specific requirements in very little time. The sophisticated compensation circuit makes it possible to specify a narrow total error band.

The pressure transmitters of the 33X series use digital compensation with a mathematical model to achieve exceptional accuracy of 0,05 %FS – in the temperature range from 10 to 40 °C, this value even corresponds to the total error band. Additional measurements and selections can optionally be used to achieve a precision (and also, if calibrated in an accredited test laboratory, an accuracy) of 0,01 %FS. In addition to the digital RS485 interface, the X-line transmitters have a rangeable, analog current or voltage output.

The pressure transmitters of the 9LC series use the chip-in-oil developed by KELLER, uniting a pressure measuring cell, digital temperature compensation and signal processing in a compact housing made of stainless steel or Hastelloy. The transmitters are extremely resistant to environmental influences and deliver compensated measurement results as an analog, ratiometric 0,5...4,5V output signal over a wide temperature range.

The pressure transmitters of the 9LD series use the chip-in-oil technology developed by KELLER, uniting a pressure measuring cell, digital temperature compensation and signal processing in a compact housing made of stainless steel or Hastelloy. The transmitters are extremely resistant to environmental influences and delivery highly accurate measurement results as a digital output signal. The I2C interface and the low supply voltages make it easy to integrate in microcontroller-based systems. The extremely low power consumption is ideal for battery-operated devices. The D line is perfect for IoT solutions.