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Head space sampling device and method for detecting leaks in same

A headspace sampling and headspace technology, applied in the field of leakage systems, can solve problems such as inability to detect leaks

Active Publication Date: 2012-07-04
AGILENT TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most common leak tests are not yet capable of detecting leaks in the vial containing the sample

Method used

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  • Head space sampling device and method for detecting leaks in same
  • Head space sampling device and method for detecting leaks in same
  • Head space sampling device and method for detecting leaks in same

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Embodiment Construction

[0015] According to various embodiments, methods for detecting leaks in a headspace sampling device are disclosed. In certain aspects, a headspace sampling device may include a pressurized gas conduit, a bottle having a headspace, and means for establishing fluid communication between the pressurized gas conduit and the bottle, the pressurized gas conduit having a Inlet for receiving pressurized gas. In an exemplary aspect, the headspace sampling device can be configured to sample the headspace within the vial.

[0016] In one aspect, a method for detecting a leak in a headspace sampling device can include pressurizing a pressurized gas conduit with pressurized gas. In another aspect, a method for detecting a leak in a headspace sampling device may include monitoring gas pressure within a pressurized gas conduit. In an additional aspect, a method for detecting a leak in a headspace sampling device can include monitoring a flow rate of pressurized gas within a pressurized gas...

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Abstract

The present invention relates to methods and systems for detecting leaks in a head space sampling device. One exemplary method for detecting leaks in a head space sampling device includes establishing fluid communication between a head space and a pressurization gas conduit. Gas pressure and flow rate are monitored within the pressurization gas conduit during pressurization of the head space. Changes in monitored gas pressure and flow rate are used to evaluate whether a leak exists within the head space sampling device or the vial containing the head space. One exemplary head space sampling device includes a conduit for receiving a pressurization gas, flow and pressure sensors for measuring gas flow and pressure within the conduit, a ventilation valve, a pressure valve for controlling gas flow through the conduit, and a controller for processing and controlling pressure and flow through the conduit.

Description

technical field [0001] The present invention relates to systems and methods for detecting leaks in head space sampling devices. More specifically, the present invention relates to systems and methods for detecting leaks in a headspace sampling device by monitoring air pressure and flow within the headspace sampling device. Background technique [0002] In typical headspace sampling analysis, a liquid or solid sample is contained in a vial connected to a headspace sampling device. The headspace sampling device is used to sample the headspace above the sample inside the vial. Typically, the sample is heated to create a vapor that fills the headspace. Prior to headspace sampling, the vials are pressurized in a controlled manner with the gas supplied to the vials. For example, the bottle can typically be pressurized with gas until a selected pressure is reached. Gas from the headspace can be directed to the headspace analyzer when the desired pressure characteristics exist w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/26G01N30/20
CPCG01M3/3254G01N2001/2229G01N2030/062Y10T436/25375Y10T436/25875
Inventor 罗伯特·C·亨德森
Owner AGILENT TECH INC