DE1598021A1 - Device for indicating gas concentrations - Google Patents
Device for indicating gas concentrationsInfo
- Publication number
- DE1598021A1 DE1598021A1 DE19671598021 DE1598021A DE1598021A1 DE 1598021 A1 DE1598021 A1 DE 1598021A1 DE 19671598021 DE19671598021 DE 19671598021 DE 1598021 A DE1598021 A DE 1598021A DE 1598021 A1 DE1598021 A1 DE 1598021A1
- Authority
- DE
- Germany
- Prior art keywords
- test tube
- pump
- light
- circuit
- gas concentrations
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
- G01N21/783—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour for analysing gases
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
"Vorrichtung zur Kenntlichmachung von Gaskonzentrationen" Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Kenntlichmachung von Gaskonsentrationen, insbesondere von CO-Konzentratione, in der Luft derart auszubilden1 daß sie nach einer bestimmten Zeit bei einer bestimmten Gaskonzentration ein optisches und/oder akustisches Signal abgibt Diese Aufgabe wird erfindungsgqaß durch eine Vorrichtung gelöst, die gekennzeichnet ist durch eine motorisch antreibbare Pumpe, eine Fassung für ein Prüfröhrchen auf der Saug und/oder Druckseite der Pumpe, eine photoelektrische Abtasteinrichtung, die so angeordnet ist, daß sie eine bestimmte Stelle eines in die Fassung eingesetzten Prüfröhrchens abtastet, und eine optische und/oder akustische Alarmvorrichtung, die auf den von dem lichtempfindlichen element abgegebenen Strom anspricht. "Apparatus for indicating gas concentrations" of the invention is based on the task of providing a device for identifying gas concentrations, especially of CO concentrations in the air in such a way that they after a certain time at a certain gas concentration an optical and / or emits acoustic signal This task is made according to the invention by a device solved, which is characterized by a motor-driven pump, a socket for a test tube on the suction and / or pressure side of the pump, a photoelectric one Scanning device, which is arranged so that it has a certain Place a probe inserted into the socket scans, and an optical one and / or acoustic alarm device, which is triggered by the light-sensitive element delivered current responds.
Prüfröhrchen sind Röhrchen aus durchsichtigem Material, durch die die Prüfluft strömen kann und die mit einer Masse gefüllt sind, welche durch das festzustellende Gas gefärbt wird. Strömt durch das Prüfröhrchen Prüfluft, welche das fragliche Gas enthält, so wandert die Grenze zwischen der ursprünglichen Farbe und der neuen Farbe durch das Prüfröhrchen hindurch. Die im Betrieb befindliche Vorrichtung gemäß der Erfindung alarmiert also, wenn diese Grense diejenige Stelle passiert, die von der photoelektrischen ibtasteinrichtung abgetastet wird.Detector tubes are tubes made of transparent material through which the test air can flow and which are filled with a mass, which through the the gas to be detected is colored. Test air flows through the test tube, which contains the gas in question, the boundary moves between the original color and the new color through the test tube. The one in operation The device according to the invention will thus alert you when this Grense that point happens that is scanned by the photoelectric scanning device.
Der Vorteil, der mit der erfindungsgemäßen Vorrichtung erzielt wird, besteht darin, daß sie dem Benutzer automatisch anzeigt, wie lange er sich in einer gasgeschwängerten Atmosphäre ohne Atemschutzmittel aufhalten darf, denn die Aufenthaltsdauer hängt von der Konzentration ab.The advantage that is achieved with the device according to the invention, is that it automatically shows the user how long he has been in a gas-laden atmosphere without breathing apparatus, because the length of stay depends on the concentration.
Eine Weiterentwicklung der Erfindung besteht darin, daß der elektrische Speisekreis der Pumpe und der aus lichtempfindlichem Element und AIarnvorrichtung bestehende Signalkreis über einen Schaltteil miteinander verbunden sind, derart, daß der Speisekreis und gegebenenfalls der Stromkreis der Lichtquelle unterbrochen werden, wenn die Alarmvorrichtung anspricht.A further development of the invention is that the electrical Feed circuit of the pump and the light-sensitive element and alarm device existing signal circuit are connected to one another via a switching part, in such a way that that the supply circuit and possibly the circuit of the light source interrupted when the alarm device responds.
In der einzigen Figur der Zeichnung ist ein Ausfüiirungsbeispiel gemäß der Erfindung schematisch dargestellt, daÇ im folgenden beschrieben ist. eine von einer Spannungsquelle 1, z. B. einem akku, gespeiste Pumpe 2 saugt das MeBgas über ein Filter 3 an und drückt es durch ein Prüfröhrchen 4. Das Filter 3 filtert sowohl Staub als auch Stöfsubstanzen für das Prüfröhrchen 4 aus.In the single figure of the drawing, an exemplary embodiment is shown in accordance with of the invention shown schematically that described below is. one of a voltage source 1, e.g. B. a battery, fed pump 2 sucks the measuring gas on a filter 3 and pushes it through a test tube 4. The filter 3 filters out both dust and interfering substances for the test tube 4.
Das Prufröhrchen 4 befindet sich in einer Fassung. imine kleine Glühbirne 6 wirft Licht auf eine Stelle 5 des Prüfröhrchens, das von dort in ein lichtempfindliches Element 7 reflektiert wird. Das lichtempfindliche Element 7 mißt die Intensität des von der indikatorschicht des Prüfröhrchens 4 reflaktierten Lichte der Glühbirne 6. Wenn die Verfärbung der Indikatorschicht die Stelle 5 erreicht, registriert das lichtempfindliche Element 7 eine veränderte Lichtintensität. Das sich entsprechend verändernde Ausgangssignal des lichtempfindlichen Elements 7 betätigt die elektronische Schaltung 8, die daraufhin die Pumpe 2 und die Glühbirne 6 abschaltet und stattdessen ein optisches und/oder akustisches Alarmsignal 9 betatigt. Das beschriebene Gerät löst also bei Erreichen einer durch das eingesetzte Prüfröhrchen bestimmten Gasdosis Alarm aus.The test tube 4 is in a holder. imine little lightbulb 6 throws light onto a point 5 of the test tube, which from there into a light-sensitive Element 7 is reflected. The photosensitive element 7 measures the intensity of the light from the light bulb reflected by the indicator layer of the test tube 4 6. When the discoloration of the indicator layer reaches point 5, it registers light-sensitive element 7 a changed light intensity. That is accordingly changing output signal of the photosensitive element 7 actuates the electronic Circuit 8, which then switches off the pump 2 and the light bulb 6 and instead an optical and / or acoustic alarm signal 9 is actuated. The described device so triggers when a gas dose determined by the inserted test tube is reached Alarm off.
Um das Gerät für eine neue Messung einsetzbar zu machen, müssen das verbrauchte Prüfröhrchen 6 und eventuell das Filter 3 ersetzt werden.To make the device usable for a new measurement, you have to used test tubes 6 and possibly the filter 3 must be replaced.
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA0055604 | 1967-05-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1598021A1 true DE1598021A1 (en) | 1970-03-26 |
Family
ID=6940080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19671598021 Pending DE1598021A1 (en) | 1967-05-02 | 1967-05-02 | Device for indicating gas concentrations |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1598021A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2233660A1 (en) * | 1972-07-08 | 1974-01-24 | Draegerwerk Ag | GAS DETECTOR USING TEST TUBE |
FR2356133A1 (en) * | 1976-06-26 | 1978-01-20 | Draegerwerk Ag | METHOD AND DEVICE FOR USING THE INDICATIONS PROVIDED BY THE COLORING OF INDICATOR TUBES |
DE3501093C1 (en) * | 1985-01-15 | 1986-06-12 | Drägerwerk AG, 2400 Lübeck | Gas measuring and warning device |
DE3605047C1 (en) * | 1985-01-15 | 1987-08-20 | Draegerwerk Ag | Gas measuring and warning device |
WO1990011512A1 (en) * | 1989-03-18 | 1990-10-04 | Msi Elektronik Gmbh | Device for determining a gaseous constituent of a measurement gas |
US5089232A (en) * | 1989-01-27 | 1992-02-18 | Dragerwerk Aktiengesellschaft | Apparatus for measuring the concentration of gaseous and/or vaporous components of a gas mixture |
DE4439433A1 (en) * | 1994-11-04 | 1996-05-09 | Draegerwerk Ag | Analysis of air pollutant present in both aerosol and gaseous form |
DE19538125A1 (en) * | 1995-10-13 | 1997-04-17 | Draegerwerk Ag | Gas detecting and measuring system which detects colour change in reagent it is pumped through |
DE102013006543A1 (en) * | 2013-04-16 | 2014-10-16 | Dräger Safety AG & Co. KGaA | Measuring device, reaction carrier and measuring method |
DE102017010220A1 (en) * | 2017-11-03 | 2019-05-09 | Dräger Safety AG & Co. KGaA | A monitoring device and method for monitoring an ambient gas |
-
1967
- 1967-05-02 DE DE19671598021 patent/DE1598021A1/en active Pending
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2233660A1 (en) * | 1972-07-08 | 1974-01-24 | Draegerwerk Ag | GAS DETECTOR USING TEST TUBE |
FR2356133A1 (en) * | 1976-06-26 | 1978-01-20 | Draegerwerk Ag | METHOD AND DEVICE FOR USING THE INDICATIONS PROVIDED BY THE COLORING OF INDICATOR TUBES |
DE3501093C1 (en) * | 1985-01-15 | 1986-06-12 | Drägerwerk AG, 2400 Lübeck | Gas measuring and warning device |
EP0187898A1 (en) * | 1985-01-15 | 1986-07-23 | Drägerwerk Aktiengesellschaft | Gas-measuring and alarm device |
DE3605047C1 (en) * | 1985-01-15 | 1987-08-20 | Draegerwerk Ag | Gas measuring and warning device |
US5089232A (en) * | 1989-01-27 | 1992-02-18 | Dragerwerk Aktiengesellschaft | Apparatus for measuring the concentration of gaseous and/or vaporous components of a gas mixture |
WO1990011512A1 (en) * | 1989-03-18 | 1990-10-04 | Msi Elektronik Gmbh | Device for determining a gaseous constituent of a measurement gas |
DE4439433A1 (en) * | 1994-11-04 | 1996-05-09 | Draegerwerk Ag | Analysis of air pollutant present in both aerosol and gaseous form |
DE19538125A1 (en) * | 1995-10-13 | 1997-04-17 | Draegerwerk Ag | Gas detecting and measuring system which detects colour change in reagent it is pumped through |
DE102013006543A1 (en) * | 2013-04-16 | 2014-10-16 | Dräger Safety AG & Co. KGaA | Measuring device, reaction carrier and measuring method |
DE102013006543B4 (en) * | 2013-04-16 | 2017-03-23 | Dräger Safety AG & Co. KGaA | Measuring device, reaction carrier and measuring method |
US9933404B2 (en) | 2013-04-16 | 2018-04-03 | Dräger Safety AG & Co. KGaA | Measuring device and measuring method |
DE102017010220A1 (en) * | 2017-11-03 | 2019-05-09 | Dräger Safety AG & Co. KGaA | A monitoring device and method for monitoring an ambient gas |
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