The 23SY-H2 series is characterised by its low embrittlement rate due to the increased nickel content in the stainless steel. Thanks to a gold-plated diaphragm, H2 diffusion is also reduced to a minimum. The pressure transmitters are compensated over the entire temperature range and offer excellent long-term stability. The 23SY-H2 series products are a reliable solution with long service life, high accuracy and safety to meet all hydrogen requirements.

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.

In the high-precision level sensors of the 36XW series, the temperature dependence and nonlinearity are precisely compensated for in the microcontroller by means of a mathematical model. In addition to the RS485 interface, the measurement results can also be output via the integrated D/A converter as a rangeable analog signal. Extended lightning protection is also available as an option.

The LEO5 digital pressure gauges combine a range of functions from other KELLER Pressure gauges in a water-tight stainless steel housing. They can detect pressure peaks with a measurement interval of ≥ 1 kHz and record all measurements. Current measured values and saved data can be read out via the USB connection. The pressure values can be shown on the extra-large display in a wide range of units of pressure, which are either pre-programmed or configured by the user.

The 23SY-H2 series is characterised by its low embrittlement rate due to the increased nickel content in the stainless steel. Thanks to a gold-plated diaphragm, H2 diffusion is also reduced to a minimum. The pressure transmitters are compensated over the entire temperature range and offer excellent long-term stability. The 23SY-H2 series products are a reliable solution with long service life, high accuracy and safety to meet all hydrogen requirements.

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.

In the high-precision level sensors of the 36XW series, the temperature dependence and nonlinearity are precisely compensated for in the microcontroller by means of a mathematical model. In addition to the RS485 interface, the measurement results can also be output via the integrated D/A converter as a rangeable analog signal. Extended lightning protection is also available as an option.