Security bar rack

US4646067A · kind A · utility

Assignee

• Maschinenfabrik Hellmut Geiger GmbH. & Co. KG · DE

Inventors

• Werner Marzluf · Rheinstetten, DE
• Gunter Ott · Erlangen, DE

Key dates

• Filing date: Jul 11, 1983
• Grant date: Feb 24, 1987
• Expiry date: Jul 11, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/20
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A security bar rack for installation in the inlets or outlets of water-treatment plants or power stations comprises a number of hollow tubes. A conductive indicator element with uninsulated external surfaces is stretched within each tube and extends over its entire length. Each indicator element is provided with a separate monitoring circuit which actuates a signal element in a way that a detectable alarm signal is emitted if any change takes place in the dielectric condition of the indicator element/tube assembly. In addition a second signal element is provided which is controlled by the monitoring circuit so as to produce a detectable signal to indicate that the device is in a state of readiness to produce an alarm signal.