摘要:
A highly sensitive gas analysis method and apparatus to practice the method is provided to evaluate the gas content and predict the expected performance of a vacuum interrupter using specific contact material analyzed.
摘要:
AN APPARATUS AMD METHOD FOR DETERMINING THE ALCOHOLIC CONTENT OF BREATH COMPRISING AN ALCOHOL ADSORBENT; MEANS FOR HEATING THE ADSORBENT; A HYDROGEN GAS FILTER CONSISTING OF, FOR EXAMPLE, PALLADIUM; MEANS FOR HEATING THE FILTER; A GUIDE PIPE FOR CONDUCTING THE HYDROGEN THERMALLY DECOMPOSED FROM ALCOHOL TO THE HYDROGEN GAS FILTER; AND
A VACUUM VESSEL PROVIDED WITH A DEVICE FOR DETERMINING THE AMOUNTS OF HYDROGEN PERMEATING THE FILTER.
摘要:
AN APPARATUS FOR DETERMING THE ACTIVITY OF OXYGEN IN A LIQUID AND SOLID METAL AND ALLOYS WHICH INCLUDES A CONTROL FOR THE PARTIAL PRESSURE OF OXYGEN IN A REFERENCE ELECTRODE, WHICH LATTER ELECTRODE IS ONE OF A PAIR OF ELECTRODES OF AN OXYGEN CONCENTRATION CELL. WHEN THE ELECTROMOTIVE FORCE ACROSS THE PAIR OF ELECTRODES OF THE CELL VARIES FROM A ZERO VALUE, THE CONTROL ADJUSTS THE PARTIAL PRESSURE OF OXYGEN IN THE REFERENCE ELECTRODE TO A VALUE CORRESPONDING TO THE OXYGEN ACTIVITY OF THE METAL OR ALLOY BEING TESTED, THIS METAL OR ALLOY FORMING THE OTHER OF THE PAIR OF ELECTRODES OF THE OXYGEN CONCENTRATION CELL.
摘要:
A measuring instrument and system for the determination of the partial oxygen and carbon dioxide pressures and of the pH value of a blood test sample having a thermostatized measuring vessel with a measuring capillary tube inserted therein to contain the blood test sample with three receiving bores in the measuring vessel and three measuring electrode units one of which being oxygen sensitive with the second carbon dioxide sensitive and the third being pH sensitive. Each of the measuring sensors are in contact with the said blood test sample and a measuring and recording device for electrode conductively connected with one of the measuring electrode units with a conical receiving bore provided on the measuring vessel. Three control bores terminate in the conical receiving bore and a switch element is inserted in the receiving bore to register with the control bores in three different positions with a pumping device providing for alternate suction and delivery strokes and a pipeline connects the pumping device with the control bores. A gas intake pipe connects the pressure tank with the second control bore and a suction pump and a suction pipe connect the latter with the third control bore and a conical filler connection is mounted on the measuring vessel and is connected with the extremity of the measuring capillary tube opposite the switch member.