Safety module and measuring arrangement with safety module

US7251985B2 · kind B2 · utility

Assignee

• Endress+Hauser Flowtec AG · CH

Inventors

• Peter Renk · Lörrach, DE
• Gerold Klotz-Engmann · Maulburg, DE
• Michael Hugel · Lörrach, DE

Key dates

• Filing date: Mar 23, 2005
• Grant date: Aug 7, 2007
• Expiry date: Jul 20, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G01L19/141
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A measuring arrangement, including: a measuring transmitter with a sensor for registering a property of a medium and for issuing a primary signal dependent on the property; a transmitter housing, with at least one chamber and a first opening on the side facing the medium as well as a second opening, with a first contamination path section extending between the openings through the chamber; a first seal, which interrupts the first contamination path section; a circuit in the chamber, for processing the primary signal and producing an output signal, which is issued over a first signal path section through the second opening; a safety module, which includes: a module housing with at least one module chamber, having a first module opening on the side facing the transmitter and a second module opening, wherein a second contamination path section reaches from the first module opening at least as far as into the module chamber; at least a second seal, which interrupts the second contamination path section; and a second signal path section; wherein the safety module is connectable with the transmitter, such that the contamination path sections and signal path sections connect each to one a…