CS239829B1 - Apparatus for calibrating membrane barometers - Google Patents
Apparatus for calibrating membrane barometers Download PDFInfo
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- CS239829B1 CS239829B1 CS844073A CS407384A CS239829B1 CS 239829 B1 CS239829 B1 CS 239829B1 CS 844073 A CS844073 A CS 844073A CS 407384 A CS407384 A CS 407384A CS 239829 B1 CS239829 B1 CS 239829B1
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Abstract
Žariadenie je určené ipre kalibráciu hydrometeorologických membránových barometrov. Podstata zariadenia spočívá v tom, že v telese je upevněná kalibračná polymerová membrána na ktorej je zalisovaný kovový krúžok, na ktorý pritláča regulačná skrutka, zaskruDkovaná v závitovom puzdre, zakrytá ochranným krytom nasunutým na závitovom puzdre, ktoré je naskrutkované na telese v ktorom je nad měrnou komorou, vyplněnou silikonovým olejom a z druhej strany uzavretou měrnou membránou staničného barometra zatmelená skleněná rúrka s milimetrovou síupnicou. Žariadenie možno využit pri priebežnej kontrole správnosti činnosti membránových barometrov na hydrometeorologických staniciach.The device is also intended for the calibration of hydrometeorological membrane barometers. The essence of the device is that a calibration polymer membrane is fixed in the body, on which a metal ring is pressed, which is pressed by a regulating screw, screwed into a threaded sleeve, covered by a protective cover slipped onto the threaded sleeve, which is screwed onto the body in which a glass tube with a millimeter scale is embedded above the measuring chamber, filled with silicone oil and closed on the other side by the measuring membrane of the station barometer. The device can be used for continuous control of the correct operation of membrane barometers at hydrometeorological stations.
Description
Vynález sa týká zariadenia pre kalibráciu membránových barometrov.The invention relates to a device for calibrating membrane barometers.
Doteraz sa staniční; barometre kalibrujú v ročných íntervaloch v metrologických ústavochi Nevýhodou přitom je, že ak sa vyskytne nepředvídaná porucha v priebehu činnosti prístroja, napr. ak sa zníži hodnota vákua, poškodí sa membrána, připadne vznikne iná chyba, musí sa barometer vyřadit z činnosti a opátovné prekalibrovať v metrologickom ústave.So far it has been stationary; barometers calibrate in yearly intervals in metrology institutes The disadvantage is that if an unforeseen failure occurs during the operation of the device, e.g. if the vacuum value decreases, the diaphragm is damaged, another error occurs, the barometer must be taken out of operation and recalibrated at the metrology institute.
Uvedené nedostatky odstraňuje zariadenie pre kalibráciu membránových barometrov v ktorom sú polymérové membrány, podlá vynálezu, ktorého podstata spočívá v tom, že v telese je upevněná kalibračná polymerová membrána, na ktorej je zalisovaný kovový krúžok, na ktorý pritláča regulačná skrutka, zaskrutkovaná v závitovom puzdre, zakrytá ochranným krytom, nasunutým na závitovom puzdre, ktoré je naskrutkované na telese v ktorom je nad měrnou komorou, vyplněnou silikonovým olejom a z druhej strany uzavretou měrnou membránou staničného barometra zatmelená skleněná rúrka s milimetrovou stupnicou.The above mentioned drawbacks are eliminated by a device for calibrating membrane barometers in which there are polymeric membranes according to the invention. covered with a protective cover, slipped on a threaded sleeve, which is screwed on a body in which is above the measuring chamber filled with silicone oil and sealed with the measuring membrane of the stationary barometer sealed glass tube with a millimeter scale.
Vynález zariadenia pre kalibráciu membránových barometrov umožňuje bez demontáže prístroja presnú rýchlu a spolahlivú kalibráciu a priebežnú kontrolu barometrov priamo na mieste ich meracej činnosti.The invention of the device for calibrating diaphragm barometers enables precise, fast and reliable calibration and continuous monitoring of barometers directly at the point of their measurement without dismantling the device.
Zariadenie pre kalibráciu membránových barometrov je v řeze znázorněné na prípojenoím výkrese.The device for calibrating membrane barometers is shown in cross-section in the attached drawing.
Kalibračná polymerová membrána 1, na ktorej je zalisovaný kovový krúžok 2 je upevnená v telese 6. Na kovový krúžok 2 pritláča regulačná skrutka 3, zaskrutkovaná v závitovom puzdre 5. Regulačná skrutka 3 je zakrytá ochranným krytom 4 nasunutým na závitovom puzdre 5, ktoré je naskrutko8 29 váné na telese B. Měrná komora, t. j. priestor medzi kalibračnou polymérovou membránou 1 a měrnou membránou 10 staničného barometra v telese 6 je vyplněná silikonovým olejom 9, ktorý vyplňa aj sklenenú rúrku 7 s milimetrovou stupnicou 8. Pri kontrolnej ikalibrácii sa zaskrutkuje regulačná skrutka 3 na kovový krúžok 2 zalisovaný v kalibračnej polymérovej membráně 1. Po vychýlení kalibračnej polymérovej membrány 1 sa zvýši tlak v mernej komoře v důsledku čoho sa zvýši hladina silikonového oleja 9 v sklenenej rúrke 7 o predom určenú hodnotu. Pri správnéj činnosti barometra tomu zodpovedá změna hodnot na indikačnom zariadení kontrolovaného barometra. Pri normálnej činnosti barometra mění hladina silikonového oleja 9 v sklenenej rúrke 7 polohu na milimetrovej stupnici 8 v závislosti na změnách barometrického tlaku.The calibration polymer membrane 1, on which the metal ring 2 is pressed, is fixed in the body 6. A pressure screw 3, screwed in the threaded sleeve 5, is pressed onto the metal ring 2, screwed in the threaded sleeve 5. 29 on the body B. Measuring chamber, t. j. the space between the calibration polymeric membrane 1 and the measuring membrane 10 of the stationary barometer in the body 6 is filled with silicone oil 9, which also fills a glass tube 7 with a millimeter scale 8. During the checkal calibration After deflection of the calibration polymer membrane 1, the pressure in the measuring chamber is increased as a result of which the level of silicone oil 9 in the glass tube 7 is increased by a predetermined value. If the barometer is working correctly, the change of the values on the barometer of the controlled barometer corresponds to this. In normal operation of the barometer, the level of silicone oil 9 in the glass tube 7 changes its position on the millimeter scale 8 as a function of changes in barometric pressure.
Pri kontrole správnosti činnosti prístroja sa natočí regulačná skrutka 3 tak, aby sa hladina silikonového oleja 9 zvýšila v sklenenej rúrke 7 o určitý počet dielikov, napr. 10 mm. Dovolená změna hodnot na číslicovom výstupe staničného barometra, pre určité zvýšenie tlaku sa zistí experimentálně a jeho hodnota udává kaliibračnú konstantu barometra. Ak je změna indikovaná na výstupe v určených toleranciách, je činnost barometra správná.To check the correct operation of the device, turn the adjusting screw 3 so that the level of silicone oil 9 increases in the glass tube 7 by a certain number of divisions, e.g. 10 mm. The permissible change of values on the digital output of the stationary barometer, for a certain pressure increase, is determined experimentally and its value indicates the calibrating constant of the barometer. If the change indicated at the output is within the specified tolerances, the barometer will operate correctly.
V súčasnosti sa vyžaduje citlivost barometrov + 0,1 mbar, čo odpovedá zmene hladiny olejového stípca na milimetrovej stupnici 8 o cca + 1,2 mm.A barometer sensitivity of + 0.1 mbar is now required, which corresponds to a change in the oil column level on the millimeter scale of 8 by about + 1.2 mm.
Zariadenie pre kalibráciu membránových barometrov možno využiť pri priebežnej kontrole správnosti činnosti membránových barometrov na hydrometeorologických staniciach.The device for calibration of membrane barometers can be used for continuous checking of the correct functioning of membrane barometers at hydrometeorological stations.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS844073A CS239829B1 (en) | 1984-05-31 | 1984-05-31 | Apparatus for calibrating membrane barometers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS844073A CS239829B1 (en) | 1984-05-31 | 1984-05-31 | Apparatus for calibrating membrane barometers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS407384A1 CS407384A1 (en) | 1985-06-13 |
| CS239829B1 true CS239829B1 (en) | 1986-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS844073A CS239829B1 (en) | 1984-05-31 | 1984-05-31 | Apparatus for calibrating membrane barometers |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS239829B1 (en) |
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1984
- 1984-05-31 CS CS844073A patent/CS239829B1/en unknown
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| Publication number | Publication date |
|---|---|
| CS407384A1 (en) | 1985-06-13 |
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