Abstract: A sensor for thermal mass flowmeters is described herein. The sensor includes a plate-shaped, thin-film resistor and a cylindrical holder into which the resistor is fastened. In order to fasten the thin-film resistor in a mechanically stable manner, the end surface of the holder is provided with a pocket hole which closely matches the cross section of the thin-film resistor. The thin-film resistor is suitably inserted into this pocket hole and fastened therein with an adhesive agent.

Abstract: A temperature probe (20) is provided which comprises a sensor (22) mounted within a protecting tube (38). A gap is defined between the sensor (22) and the protecting tube (38). The gap (46) between the sensor and the protecting tube is filled with a dry gas such a helium.

Abstract: A device for the measurement of the mass flows of gases and liquids in pipelines by means of an anemometer arrangement, comprising electrical resistors. The temperature dependent measuring and reference resistors together with connecting leads are each surrounded by a protective tube, which in the region of the resistors is provided with a transverse cylindrical bore, the length to diameter ratio of which must be at least 1.5.

Abstract: In order to avoid local overheating on the surface of an intrinsically safe measuring transducer provided with current limiting resistors and embedded in a sealing composition, a body of a good heat conducting material is arranged within the sealing composition in the vicinity of the current limiting resistors.

Abstract: Gold powder is inserted in a cavity for the production of fillings in teeth by means of filled gold and this is subsequently hardened mechanically. The moisture sensitivity of this process can be avoided by using a paste made of platelet shaped gold powder with a plastic, organic binder which liquifies at 20.degree. to 45.degree. C. and the mechanical hardening is carried out with ultrasonic.

Abstract: Powder of a ductile, mouth resistant metal such as silver, platinum, palladium, aluminum, or titanium, or an alloy thereof, or a cold weldable, mouth resistant synthetic resin, such as a polyacrylate or methacrylate, polycarbonate or polysulfone is worked to a paste with a plastic organic binder which liquifies at 20.degree. to 45.degree. C. This paste is hardened in the tooth cavity by ultrasonic action.

Abstract: An apparatus for fastening an electrical device into the connecting head of an electrical thermometer includes a fastener arrangement for the base plate of the temperature probe which consists of a screw, a casing and helical spring, with the spring slidable into the casing which is provided with a J-shaped notch or groove and a flange for engaging the helical spring. In the notch there is engaged a pin which is formed in the bore hole of the electrical device. By turning the casing there is accomplished a fastening of the part according with a type of bayonet locking.

Abstract: There is described an anemometer for the measurement of the flow velocity of gases and liquids particularly for the measurement of the intake air of internal combustion engines whereby the heated resistances are film resistance made of a metal layer and carrier, should have the shortest possible response time. This is attained by so dimensioning the flow paths (6) in the metal layer (1) that the resulting resistance per unit of surface area stands in a constant ratio to the local heat transfer coefficient.

Abstract: An apparatus for the measurement of the flow velocity of gases and liquids, particularly the intake air of combustion engines, includes one or more temperature dependent at least partially heated resistances disposed behind a protective shield which produces a turbulent flow which flow is rendered laminar by interposing a honeycomb of wire screen between the protective shield and the resistance element.

Abstract: For the secure positioning combined with a quick regulation of the thermal equilibrium of thin layer resistances, especially in hot film anemometers, there are used holding devices in which the thin layer resistance 2 is rested on at least three pointed supports 4 of a holding clamp 1 and is pressed on at least two of the supports 4 with clips provided with spikes.

Abstract: There is provided an apparatus for the measurement of the velocity of gases, especially for the intake of internal combustion engines, consisting essentially of an electronic unit and a hot-wire anemometer, with two or more temperature dependent resistances with the highest possible temperature coefficients which together with two temperature independent resistances are connected to form a bridge. The temperature dependent resistances are made of a thin metal coating which are placed on electrically insulating carriers.

Abstract: There is provided a hot wire anemometer for measuring the flow velocity of gases and liquids, especially for the intake air of internal combustion engines, with one or more temperature dependent resistances of which one or more are heated wherein there is applied to the side of the heated resistance in the direction of flow a heat insulating coating.

Abstract: There is provided an apparatus for continuous measurement of ion concentration in solutions by means of ion sensitive electrodes, which apparatus consists of an electrode containing measuring cell and a dosaging device. This apparatus is particularly suited for measuring cyanide ion concentration in strong hydrochloride solution in the presence of cyanogen chloride. The dosaging device contains a degassing section and a reflecting plate to which the supply means for the working solution to be measured and for the necessary auxiliary reagents are directed, the supply means being in the form of screens or nozzles.

Abstract: There is provided an apparatus for the measurement of the velocity of gases, especially for the intake of internal combustion engines, consisting essentially of an electronic unit and a hot-wire anemometer, with two or more temperature dependent resistance with the highest possible temperature coefficients which together with two resistances are connected to form a bridge. The temperature dependent resistances are made of a thin metal coating which are placed on electrically insulating carriers.