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Meßprinzip : Aus der Höhendifferenz der beiden Quecksilbersäulen in mm ergibt sich der absolute Druck in Torr.
Meßbereich : 180 – 1 Torr. Ablesegenauigkeit : 0.5 Torr = 0.5 Hg-Säule.
Die Speigelglasskala erlaubt ein leichtes, parallaxefreies Ablesen.
Fertigmachen zum Gebrauch:
Man verschließt die linke Manometerolive (1) mit einem Gummistopfen. An die rechte Olive (2) wird unter Verwendung von Druckschlauch, Glaswinkelrohr und durchbortem Gummistopfen eine Woulffsche Flasche angeschlossen, die wiederum mit einer Wasserstrahlpumpe verbunden wird (siehe Abb. A).
Die Woulffsche Flasche wird evakuiert, wobei der Hahn (3) des Manometers verschlossen bleibt. Jetzt nimmt man das Manometer in die linke Hand und öffnet mit der rechten Hand vorsichtig den Hahn (3).
Den Quecksilberfluss reguliert man durch Neigen des Manometers und abwechselndes, vorsichtiges Öffnen und Schließen des Hahnes (3). Wenn die Oberkante der Hg-Säule des linken U-Rohr Schenkels in den oberen Bereich des rechten U-Rohr Schenkels gelangt (Richtlinie ist 70 der linken Zahlenreihe, siehe Abb. B), schließt man den Hahn (3). Falls sich beim Absaugvorgang die Hg-Säule trennt, was des öfteren vorkommt, schließt man den Hahn (3) und führt die Säulenteile durch Neigen des Manometers zusammen. Ist der Absaugvorgang beendet, belüftet man die Anlage in der Reihenfolge :
1.) Wasserhahn zu drehen.
2.) Vorsichtig Verschlußstopfen der linken Manometerolive (1) entfernen.
3.) Vorsichtig den Hahn (3) öffnen und Gerät belüften.
Wenn man den Hahn zu schnell öffnet, schlägt die Hg-Säule zurück und zerstört das Gerät.
Die richtige Menge Hg ist dann abgesaugt, wenn die Oberkante im rechten U-Rohr Schenkel in etwa bei 75 der rechten Zahlenreihe steht (siehe Abb. C). Dabei darf sich aber über dem Hg des linken U-Rohr Schenkels keine Luft befinden.
Translation - English Operating Instructions
Measuring principle: The absolute pressure in Torr is given by the difference in height, in mm, of the two mercury columns.
Effective Range: 180 – 1 Torr. Reading accuracy: 0.5 Torr = 0.5 Hg column.
The plate glass scale allows easy, parallax free reading.
Preparing for use:
Close the left manometer olive (1) using a rubber bung. Using a pressure hose, glass angle hose and pierced rubber bung, a Woulff bottle is attached to the right olive (2), which, in turn, is connected to a water jet pump (see Fig. A).
The Woulff bottle is evacuated – during which, the manometer tap (3) remains closed. Now take the manometer in your left hand and carefully open the tap (3) with your right hand.
Regulate the flow of mercury by tipping the manometer and carefully opening and closing the tap (3). When the top of the Hg column in the left-hand side of the U-tube reaches the upper area of the right-hand side of the U-tube (guideline is 70 on the left-hand scale, see Fig. B), close the tap (3). Should the Hg column separate during the suction process - which often happens - close the tap (3) and bring the column parts together by tipping the manometer. When the suction process is finished, ventilate the equipment in the following order:
1.) Close the water tap.
2.) Carefully remove the sealing bung from the left manometer olive (1).
3.) Carefully open the tap (3) and ventilate the device.
If the tap is opened too quickly, the Hg column will return and the equipment will be ruined.
The amount of Hg suctioned off is correct when the top of the Hg in the right-hand side of the U-tube is at about 75 on the right-hand scale (see Fig. C). However, there must be no air above the Hg in the left-hand side of the U-tube.
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Bachelor's degree - Aston University
Experience
Years of experience: 23. Registered at ProZ.com: Nov 2003.
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Bio
Tim Bayton was born and brought up in the south-west of England. He graduated from Aston University
in 2002 with 1st Class honours in French and German with Translation
Studies. Having wanted to work in the field of translation and
interpreting since his first encounters outside the English-speaking
world, Tim immediately followed his time at university by establishing
himself as an independent translator and interpreter. Starting with
several contacts made during his year abroad in 2000-2001 and armed with
great vision and enthusiasm, Tim expanded his client base to include
individual clients, translation agencies and international companies. He
now works with a broad range of clients all over Europe, who appreciate
his reliability and the accuracy of his work.
In addition to his work as a translator and interpreter, Tim
pursues a number of hobbies and plays the euphonium with a brass quartet
in Exeter. Tim is also a keen bell ringer and currently holds the role
of President the Guild of Devonshire Ringers. Furthermore, he is actively involved with St James’ Church in Exeter, for which he edits the triannual magazine, Contact, and conducts the choir.
Keywords: Technical texts, machinery construction, sales contracts, social sciences
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