GB752851A - Piezoelectric pressure transducer - Google Patents
Piezoelectric pressure transducerInfo
- Publication number
- GB752851A GB752851A GB16746/54A GB1674654A GB752851A GB 752851 A GB752851 A GB 752851A GB 16746/54 A GB16746/54 A GB 16746/54A GB 1674654 A GB1674654 A GB 1674654A GB 752851 A GB752851 A GB 752851A
- Authority
- GB
- United Kingdom
- Prior art keywords
- crystals
- shell
- segments
- diaphragm
- pressure
- 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
- 239000013078 crystal Substances 0.000 abstract 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 230000013011 mating Effects 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/08—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically
- G01L23/10—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically by pressure-sensitive members of the piezoelectric type
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
752,851. Electric pressure transducers. SCHWEIZERISCHE LOKOMOTIV-UND MASCHINENFABRIK. June 8, 1954 [June 10, 1953], No. 16746/54. Class 40(1) A piezo-electric pressure transducer for e.g. measuring the gas pressure inside an internal combustion engine comprises two semi-cylindrical crystals 1, 2 (Fig. 2), held tightly inside a thin-walled shell 3 attached to an outer casing 5 at the bottom by a corrugated diaphragm 20 freely supported on the back by a plurality of rigid segments 23 lying loosely in recesses 24, 25, so that variations of pressure on the bottom face are transmitted to the shell 3 and the crystals 1, 2 primarily by the segments 23, and the diaphragm can therefore be very thin and flexible. The crystals are pretensioned by steel semi-cylinders (not shown) pressing the crystals from above against the thickened base of the shell 3. Pressure variations on the diaphragm 20 produce a proportional potential on the facing flat faces of the crystals 1, 2 which is led via a copper sheet 7 to a meter. The space between the shell 3 and the casing 5 may be fed with running water for cooling. The rigid segments 23 may have mating end faces as shown, or the ends may be parallel on each segment, leaving triangular gaps between the segments, which only touch on the inner edges.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH752851X | 1953-06-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB752851A true GB752851A (en) | 1956-07-18 |
Family
ID=4534043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16746/54A Expired GB752851A (en) | 1953-06-10 | 1954-06-08 | Piezoelectric pressure transducer |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB752851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2131171A1 (en) | 2008-06-06 | 2009-12-09 | AVL List GmbH | Measurement device |
-
1954
- 1954-06-08 GB GB16746/54A patent/GB752851A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2131171A1 (en) | 2008-06-06 | 2009-12-09 | AVL List GmbH | Measurement device |
| US7930934B2 (en) | 2008-06-06 | 2011-04-26 | Avl List Gmbh | Measuring device |
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