Kearflex offers a line of diaphragms specifically used for isolation applications. This is where there is a fluid fill behind the diaphragm which transmits pressure to a remote, or "isolated sensor". The sensor can be of any type including strain gauge, piezo, capacitive, inductive and optic.
The important characteristic of the remote sensor is that it is not suitable for exposure for the wetted media. The process media can be corrosive, high or low temperature and can contain solids. The key attributes of an isolation diaphragm are high sensitivity, and the material. The sensitivity allows a very thin diaphragm to pass through the applied pressure with a minimal change. The raw material is matched to the process media, and can be 316L, Hastelloy, Inconel, Monel, or any other material that can be formed into a diaphragm.
Sanitary Style Flanges
Used in the food processing and pharmaceutical industries, the isolation diaphragm provides a sterile sensing interface. These diaphragms include special internal angles that allow natural drainage for in place cleaning and sterilization.
Industry specific surface finishes include electro-polishing, and bio-compatible coatings. These assemblies are installed using standard quick release clamps.
Ansi Flange Cutaway
Cut away view of the ANSI B16.5 Flange assembly. The chamber is filled with a liquid and pressure on the diaphragm creates pressure inside the chamber which is measured by the sense elements. The sensor can be of any type including strain gauge, piezo, capacitive, inductive, and optic.