alchemist_eng
Hi all,
maybe this is a silly question but I am a newbie in this particular design field. I'm working on a gas analysis system and I'm facing a mechanical design issue. The overall system is made of the electronic board (PCB) with a gas sensors array plus the signal conditioning electronics, a gas chamber on the sensing area and various pneumatic tubes/fittings. The sensors we have choosen are sold with SMD (surface mount) packages so we need a gas chamber that "sits" on the PCB surface (see https://ibb.co/kJtuzF).
Usually gas chambers are circular based in order to include an O-Ring in order to ensure gas tightness but in this case, for design related issues, we need a rectangular based gas chamber. How we can ensure gas tightness with this kind of mechanical geometry? Are there alternative ways than using O-Rings?
Tonio
maybe this is a silly question but I am a newbie in this particular design field. I'm working on a gas analysis system and I'm facing a mechanical design issue. The overall system is made of the electronic board (PCB) with a gas sensors array plus the signal conditioning electronics, a gas chamber on the sensing area and various pneumatic tubes/fittings. The sensors we have choosen are sold with SMD (surface mount) packages so we need a gas chamber that "sits" on the PCB surface (see https://ibb.co/kJtuzF).
Usually gas chambers are circular based in order to include an O-Ring in order to ensure gas tightness but in this case, for design related issues, we need a rectangular based gas chamber. How we can ensure gas tightness with this kind of mechanical geometry? Are there alternative ways than using O-Rings?
Tonio