Method and test device for field calibration of a gas detector

US9518966B2 · kind B2 · utility

Assignee

• SIEMENS SCHWEIZ AG · CH

Inventors

• Aleksandar Duric · Zug, CH
• Harald Ebner · Deggendorf, DE
• Martin Forster · Engen, DE

Key dates

• Filing date: Sep 14, 2012
• Grant date: Dec 13, 2016
• Expiry date: Dec 17, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G08B29/22
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method and test devices are used for field calibration of gas detectors. Brand new gas detectors are used as measurement standards in field calibration. The brand new gas detectors are in this case either employed directly as working standards, in which case the regular calibration by a reference standard is dispensed with, since the brand new gas detectors are always deemed to be sufficiently accurate. Alternatively, the brand new gas detectors are employed directly, namely as sufficiently accurately calibrated reference standards for the reference gas sensors acting as working standards and incorporated into the test device. In both cases the measured values of the gas sensors in the gas detectors to be calibrated are fed back to a sufficiently calibrated system, namely either directly to at least one brand new gas detector as a working standard or else to a reference sensor of a calibrated test device.