GB2005420A - Powering a gas detector - Google Patents
Powering a gas detectorInfo
- Publication number
- GB2005420A GB2005420A GB7835503A GB7835503A GB2005420A GB 2005420 A GB2005420 A GB 2005420A GB 7835503 A GB7835503 A GB 7835503A GB 7835503 A GB7835503 A GB 7835503A GB 2005420 A GB2005420 A GB 2005420A
- Authority
- GB
- United Kingdom
- Prior art keywords
- energy supply
- measuring
- supply unit
- chassis
- gas
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
- G01N27/16—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Emergency Alarm Devices (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Gas measuring apparatus, in particular portable apparatus powered by a built-in current source, of the kind having gas-detecting elements, operating and indicating elements and alarm means and comprising an energy supply unit having a chargeable battery as its current source, a measuring unit and a chassis, which items are releasably and exchangeably connected together. Energy is supplied from the battery 2 via switching means 4 in the energy supply unit to the measuring unit 3, and in the energy supply unit, the voltage feed to a plug-in connection 5, 5', 6, 6' thereon is interrupted by switching means 4 when the measuring and energy supply units are not engaged via the chassis 1. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772740159 DE2740159A1 (en) | 1977-09-02 | 1977-09-02 | GAS DETECTOR |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2005420A true GB2005420A (en) | 1979-04-19 |
GB2005420B GB2005420B (en) | 1982-03-24 |
Family
ID=6018259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7835503A Expired GB2005420B (en) | 1977-09-02 | 1978-09-04 | Gas measuring apparatus |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2740159A1 (en) |
FR (1) | FR2402329A1 (en) |
GB (1) | GB2005420B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4444517A (en) * | 1981-12-18 | 1984-04-24 | Terumo Kabushiki Kaisha | Electronic clinical thermometer |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012013656C5 (en) * | 2012-07-10 | 2019-08-01 | Dräger Safety AG & Co. KGaA | Battery operated blower filter system for use in potentially explosive atmospheres |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL302625A (en) * | 1962-12-28 | |||
FR1427765A (en) * | 1964-11-27 | 1966-02-11 | Avon Electrical Heanor Ltd | Improvements to electrical control or signaling equipment and electrical switches for these equipment |
GB1459704A (en) * | 1975-03-27 | 1976-12-31 | Gas Measurement Instr Ltd | Gas detection apparatus |
-
1977
- 1977-09-02 DE DE19772740159 patent/DE2740159A1/en not_active Withdrawn
-
1978
- 1978-08-21 FR FR7824240A patent/FR2402329A1/en not_active Withdrawn
- 1978-09-04 GB GB7835503A patent/GB2005420B/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4444517A (en) * | 1981-12-18 | 1984-04-24 | Terumo Kabushiki Kaisha | Electronic clinical thermometer |
Also Published As
Publication number | Publication date |
---|---|
GB2005420B (en) | 1982-03-24 |
FR2402329A1 (en) | 1979-03-30 |
DE2740159A1 (en) | 1979-03-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |