GB194284A - - Google Patents
Info
- Publication number
- GB194284A GB194284A GB5577/23A GB557723A GB194284A GB 194284 A GB194284 A GB 194284A GB 5577/23 A GB5577/23 A GB 5577/23A GB 557723 A GB557723 A GB 557723A GB 194284 A GB194284 A GB 194284A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vacuum
- mercury
- bulb
- thermometer
- tube
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0091—Transmitting or indicating the displacement of liquid mediums by electrical, electromechanical, magnetic or electromagnetic means
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
194,284. Akt.-Ges. Brown, Boveri, et Cie. March 4, 1922, [Convention date]. Vacuum gauges, indicating-means for; pressure deduced from temperature.-A tube h connected to the receiver in which the high vacuum is to be measured, surrounds a continuously heated mercury thermometer k, the conduction of heat from which varies according to the degree of high vacuum in the tube h, the reading of the thermometer thus indicating the degree of vacuum. The thermometer bulb is elongated and is heated by an electric current passed through the mercury by means of contact wires a, b fused into the glass, or passing through resistance wires within or around the bulb. The space above the mercury may be filled with highly compressed nitrogen &c. to raise the boiling- point of the mercury and prevent division of the column, an enlargement m being provided to keep the pressure constant. The bulb k is surrounded with a reflecting coat to reduce radiation. Contact wires may be fused into the capillary tube l at the points c, d to provide an electric control for a relay for stopping and starting the vacuum pump to maintain a certain degree of vacuum.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE194284T | 1922-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB194284A true GB194284A (en) | 1924-01-17 |
Family
ID=31892955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5577/23A Expired GB194284A (en) | 1922-03-04 | 1923-02-26 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB194284A (en) |
-
1923
- 1923-02-26 GB GB5577/23A patent/GB194284A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2685015A (en) | Resistance thermometer element | |
| US3436713A (en) | Cryogenic resistance temperature detector | |
| US2849518A (en) | Temperature indicator | |
| GB194284A (en) | ||
| US1824452A (en) | Luminescent tube | |
| US2244960A (en) | Method of making seals for discharge lamps | |
| GB519083A (en) | Improvements in the measuring and recording of fluid pressure | |
| GB667820A (en) | Electrically conducting liquid column thermostat and method of making same | |
| US2157823A (en) | High voltage measurement means | |
| GB509906A (en) | Improvements in apparatus, such as barometers and altimeters, for measuring the pressure of a gas | |
| SU35297A1 (en) | Thermal ammeter | |
| US1451283A (en) | Thermocell | |
| US1768415A (en) | Vacuum gauge | |
| GB480335A (en) | Device for signalling the presence of illuminating gas in inhabited premises | |
| GB272271A (en) | Improvements in or relating to apparatus responsive to alternating electric currents | |
| US2046416A (en) | Mercury column thermostat | |
| SU136738A1 (en) | Vacuum insulated cryo-thermocamera | |
| US2254922A (en) | Double wall discharge device | |
| GB178737A (en) | Improvements in thermo-couple manometers | |
| US1907294A (en) | Ultraviolet ray lamp | |
| SU76007A1 (en) | Vacuum gauge thermal action | |
| GB727228A (en) | Improvements in electrical temperature detector units | |
| US2122768A (en) | Temperature control device | |
| US2348607A (en) | Vacuum gauge | |
| US2135706A (en) | Gaseous electric discharge device |