Application direction
Building on SF₆ reduction, a C₄F₇N + O₂ + CO₂ mixture can reduce greenhouse gas use further and is a more advanced direction for power insulation.
What we did
We tested with key customers, established the C₄F₇N properties and integrated the data into our flow meters and flow controllers. To use it, simply select C₄F₇N in the gas list; the accuracy accepted by the customer has been reached.
The difficulty: liquefaction
C₄F₇N has a lower saturation vapor pressure than SF₆ and liquefies more easily, so it is sensitive to temperature, pressure and gas path conditions.
Engineering support
We have run many experiments with customers and have engineering experience in handling liquefaction. We can evaluate temperature, pressure and gas path with you to solve the measurement and control of C₄F₇N. This is a leading-edge application, so please talk to us during the development stage.