Witt-Gasetechnik KM100-MEM+ gas mixing system

The Witt-Gasetechnik KM100-MEM+ mixing system, for up to three gases, uses electronically actuated valves and features a gas mixture setting that is claimed to be very precise in comparison to manual settings. The target values can be reproduced exactly, even after changes in use.

It takes around 1 s to get the gas mixture flowing no matter which target values are set. The product provides the option of remote control via processor technology and electronic motor-operated mixing valves. It can be driven via PC, PLC or a machine control system.

All parameters can be called up, set, queried and documented, meaning the mixer can be integrated seamlessly into any of the user’s existing infrastructure. A touch-screen display enables the user to check the current settings or change the device parameters.

The gas mixture can be set in increments of 0.1% and well maintained. At its maximum 20 bar inlet pressure and 10 bar outlet pressure, the system generates a gas mixture output of up to 544 NL/min (air equivalent). All technical gases (apart from toxic and corrosive gases) and combinations of combustion gas with air, O₂ or N₂O can be blended, including mixtures of up to three gases.

In conjunction with a gas tank, the mixer is suitable for both continuous and batch gas blending. Pressure is controlled using dome pressure regulators that compensate for any fluctuations in the gas supply pressure. The integral gas inlet monitoring system emits an alarm and/or alarm signal if the pressure is too low. The device can be combined with other modules, such as online analysers.

The product is enclosed in a splash-proof stainless steel housing with compact dimensions of 330 x 485 x 445 mm. It weighs 22 kg.