You can purchase directly from Keller AG in Winterthur, Switzerland, or through national distributors in the US (Keller America), Germany (Keller DE), and Asia (Keller China). Most distributors offer rental programs for short-term projects.
In pharmaceutical and food manufacturing, equipment like autoclaves, sterilizers, and reactors must prove they maintain correct pressure during cycles. The Symplus 5.2 can be placed directly inside a pressure vessel (using appropriate fittings) because the logger is fully encapsulated and chemical-resistant. Keller Symplus 5.2
For architects and engineers, billing is governed by the HOAI (Honorarordnung für Architekten und Ingenieure). Standard invoicing software cannot handle the phase-based billing structure required by German law. You can purchase directly from Keller AG in