Calibration adapter for gas detection instrument
AssigneeIndustrial Scientific Corporation
InventorsAnnie Q. Wang, Jiangang Chen
Life of this patent
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Abstract
A calibration adaptor for a gas sensing device having a gas entry port therein includes a base piece having a gas entry port therein which is fixedly attached to a surface of the gas sensing device, and provided with means for releasably retaining the base piece in a first position in which the gas entry port of the gas sensing device is open to detect ambient gases, and means for moving the attached base piece to a second position in which the gas entry port of the base piece is aligned with the gas entry port of the gas sensing device, and controls entry of gas into the gas entry port of the gas sensing device. A calibration gas source may be attached to the gas entry port of the base piece.
Claims17
A calibration adaptor for a gas sensing device having a gas entry port therein, comprising:
- a base piece having a gas entry port therein;
- means for fixedly attaching the base piece to a surface of the gas sensing device, and allowing movement of the base piece between a first position in which the gas entry port of the gas sensing device is open to detect ambient gases, and a second position in which the gas entry port of the base piece is aligned with the gas entry port of the gas sensing device and controls entry of gas into the gas entry port of the gas sensing device;
- means for releasably retaining the base piece in the first position;
- means for releasably retaining the base piece in the second position;
- and
- means for attaching a calibration gas source to the gas entry port of the base piece.
A gas sensing device comprising:
- a gas entry port;
- means for analyzing gas which enters into the gas entry port;
- means for providing an indication of an analysis of gas which enters into the gas entry port;
- and
- a calibration adaptor fixedly attached to a surface of the gas sensing device, comprising:
- a base piece having a gas entry port therein;
- means for fixedly attaching the base piece to a surface of the gas sensing device, and allowing movement of the base piece between a first position in which the gas entry port of the gas sensing device is open to detect ambient gases, and a second position in which the gas entry port of the base piece is aligned with the gas entry port of the gas sensing device and controls entry of gas into the gas entry port of the gas sensing device;
- means for releasably retaining the base piece in the first position;
- means for releasably retaining the base piece in the second position;
- and
- means for attaching a calibration gas source to the gas entry port of the base piece
Dependencies are inferred from the claim text.