Abstract: A device for determining a gas mass flow rate includes a first sensor unit comprising at least one first temperature measuring element and a first heating element. A second senor unit comprises at least one second temperature measuring element and a second heating element. A control unit is configured to adjust the first heating element to a first controlled excessive temperature. The control unit is connected to the second heating element so that the second heating element is adjustable to a second controlled excessive temperature.

Abstract: A method of adjusting an electrical switch arrangement comprising a pair of electrical contact members to a predetermined contact spacing is suggested. A first one of the contact members is associated with a first contact carrier and a second one of the contact members is associated with a second contact carrier. The first and second contact members are normally spaced from each other by the predetermined contact distance and are movable relative to each other across the contact distance. At least one of the contact members is displaceably held on the associated contact carrier. The contact carriers are moved towards each other across the predetermined contact distance. The one of the contact members is displaced relative to the associated contact carrier into physical contact with the other of the contact members. The one contact member is fixed in position on the associated contact member while physically contacting the other of the contact members.

Abstract: A transformer having a plastics coil former on whose hollow winding tube (7) between flanges (3, 5) windings (11, 13) of different potentials are wound with one winding wound on top of the other. The flanges (3, 5) are provided with spacers (17, 19, 23) to keep the windings (11a, 13a) axially spaced from the flanges (3, 5). An insulating layer (21), which extends from flange to flange, is interposed between the windings (11, 13). The winding (11) nearer the coil-former axis is spaced from the flanges (3, 5) by fixed spacers or stepped portions (17, 19) provided on the winding tube (7). The winding (13) arranged on the insulating layer (21) is spaced from the flanges (3, 5) by spacing blocks (23) which are connected to the flange areas (24) of the coil former by integral hinges (25). The spacing blocks are operable for swinging down onto the insulating layer (21).