Patent US4361027A successfully refreshed from Google Patents.
US4361027A
Expired / Lapsed
US
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Measuring apparatus for the quantitative determination of a component of a gas mixture
Assignee: Individual
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Filing: 1980-08-18
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Granted: 1982-11-30
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Expires: 2000-08-18
Abstract
Abstract An improvement in a measuring apparatus for the quantitative determination of a component of a gas sample. The apparatus takes a charge of a predetermined volume of the gas mixture into a metering pump which then pushes it through the absorption unit which adsorbs or absorbs a component of the gas. A probe is used for the intake of the gas and the probe has in the region of its intake opening a thermocouple. In addition, from the cable leading from the thermocouple a reference sensing device such as a second thermocouple is placed in differential connection. A single converter is used for indication of the temperature value and a microcomputer may be used to substantially automate the process.
Inventors
- 👤 Rudi Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:21
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/14; G01K13/00; G01N; G01N7/00; G01N7/02; G01N7/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
126 words
An improved measuring apparatus for the quantitative determination of a component of a gas mixture of the type having a sorption unit containing material which sorbs said component, a metering pump for forcing a predetermined volume of the gas mixture through the sorption unit, the gas mixture being drawn into the metering pump by a probe which opens into the gas mixture for intake of said predetermined volume and a device for measuring a parameter of the gas which emerges from the sorption unit, the improvement characterized by the probe having a thermocouple in the region of the intake opening and a reference sensing device in a cable from the thermocouple in differential connection, and further comprising a signal converter for indication of the temperature values.
Claim 2
Dependent Claim
126 words
An improved measuring apparatus for the quantitative determination of a component of a gas mixture of the type having a sorption unit containing material which sorbs said component, a metering pump for forcing a predetermined volume of the gas mixture through the sorption unit, the gas mixture being drawn into the metering pump by a probe which opens into the gas mixture for intake of said predetermined volume and a device for measuring a parameter of the gas which emerges from the sorption unit, the improvement characterized by the probe having a thermocouple in the region of the intake opening and a reference sensing device in a cable from the thermocouple in differential connection, and further comprising a signal converter for indication of the temperature values.
Claim 3
Dependent Claim
28 words
The measuring apparatus of claim 1, wherein the thermocouple is surrounded by a probe tube which has radial slits near the thermocouple for intake of the gas sample.
Claim 4
Dependent Claim
21 words
The improved measuring apparatus of claim 1, wherein the signal converter comprises an analog to digital converter connected with an amplifier.
Claim 5
Dependent Claim
24 words
The improved apparatus of claim 3, wherein the signal converter is additionally connected with an outlet from the adsorption unit by a pressure transducer.
Claim 6
Dependent Claim
31 words
The apparatus according to claim 4, wherein the pressure transducer has an additional outlet connecting with the atmosphere through a magnetic valve alternatively connectable with a gas duct from the probe.
Claim 7
Dependent Claim
15 words
The apparatus of claim 5, wherein the pressure transducer is a piezoelectric silicon crystal transducer.
Claim 8
Dependent Claim
18 words
The apparatus of claim 6, wherein the pressure transducer is connected in series with a pressure reducing volume.
Claim 9
Independent Claim
28 words
The apparatus of claims 3, 4 or 7, wherein the signal converter is connected at its output end to a microcomputer consisting of a microprocessor and a memory.
Claim 10
Dependent Claim
15 words
The apparatus of claim 8, wherein the microcomputer is connected with a basic value recall.
Claim 11
Dependent Claim
14 words
The apparatus of claim 9, wherein the microcomputer is connected with a data printer.
Claim 12
Dependent Claim
21 words
The apparatus according to claim 1 or 7, wherein the probe has a hollow handle with a condensate separator arranged therein.
Claim 13
Dependent Claim
38 words
The apparatus according to claim 11, further comprising a probe holder comprising means for attachment of the holder to a container containing the gas to be sampled, a swingable holding element for locking the probe in the holder.
Claim 14
Dependent Claim
43 words
The apparatus of claim 12, wherein the holding element comprises a pair of spaced apart frame plates through which the frame passes joined by cross members, one of which is controlled by a screen for swinging one of said plates relative the other.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |