Vaisala offers certain PR‑43‑AC configurations which have been certified to fulfill the sanitary requirements published by the EHEDG (European Hygienic Engineering & Design Group) organization. During this certification the hygienic characteristics of both the refractometer and the process connection were evaluated against the applicable requirements.
To ensure EHEDG compliant installation, follow the mounting specifications provided on the mounting drawing supplied by Vaisala with each PR‑43‑AC refractometer ordered with the ‑EH option.
For more information on the mounting guideline, see 3-A Sanitary Standard compliance.