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Improved gas flow control

A technology of gas flow and flow limitation, applied in the field of air intake system, which can solve the problems of increased instrument cost

Active Publication Date: 2021-09-10
THERMO FISHER SCI BREMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because mass flow controllers are extremely expensive, this results in a significant increase in the cost per instrument

Method used

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Embodiment Construction

[0093] In the following, the drawings will be described with reference to exemplary embodiments of the present invention. These examples are provided to provide a further understanding of the present invention without limiting its scope.

[0094] In the following description, a series of steps. The art will appreciate, unless the context requires otherwise, the sequence of steps is not critical to the resulting structure and its effects. Furthermore, the skilled artisan will be apparent known that no matter how the order of steps, some of the steps, or may be a time delay between the presence or absence of all the steps between.

[0095]It should be appreciated, the present invention is applicable to analysis, include isotopes gas is usually analyzed by spectral analysis, mass spectral analysis, or other types of analysis techniques. Thus, in general, in a gas analysis system will be variable. Further, in the embodiment illustrated embodiment the system and method of the present i...

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Abstract

The present invention relates to air intake systems for analytical equipment. The air intake system includes a switchable flow restriction for adjusting the gas flow rate. The present invention also provides a system for calibrating a gas flow rate in an intake system, the system including a calibration line including a gas flow meter and disposed downstream of a gas flow controller in the intake system. Also provided are methods of adjusting the gas flow rate and methods of calibrating the gas flow rate.

Description

Technical field [0001] The present invention relates to an intake system such as an analyzer for analyzing device (including an analyzer operating under vacuum) is. The present invention further relates to a fast changing gas pressure and / or gas flow into the analyzer. Background technique [0002] Inductively coupled plasma mass spectrometry (ICP-MS) analysis is a method that can detect a non-interfering isotope in a very low concentration of low background (as low as 10 15 Metals and some non-metallic parts of the lower one (a five parts / kg of the party, PPQ)) concentration. The method relates to inductively coupled plasma ionization of the sample to be analyzed, and then separated and quantified using a mass spectrometer ion thus produced. [0003] By manipulation solenoid gas (typically argon) to produce ionization of argon atoms, a mixture of free electrons and high energy argon ions of the plasma is generated. [0004] It is known that certain elements have relatively p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D7/06G01N27/626G01N21/25
CPCG01N27/62G05D7/0641H01J49/005G05D7/03G05D7/00H01J49/0031H01J49/24H01J49/105G01F1/00G01F25/15F15B13/00
Inventor Tยท่ˆ’่‰พ็‘Ÿ
Owner THERMO FISHER SCI BREMEN