摘要:
A plug connection for a hazardous location for energy and data transmission by means of electrical quantities in a bus system has a primary part and a secondary part constructed as transmitters, as well as limiting means for the electrical quantities to be transmitted. The limiting means are located in the primary part and are designed for limiting the electrical quantities to be transmitted to the secondary part to values allowed for the particular type of protection.
摘要:
The invention relates to a security system for flowable products in storage and/or transportation tanks, which have openings at least for filling, removing and/or controlling purposes. The security system comprises a control device and write-read devices for data exchange with connection elements connectable to the openings. The connection elements have a code mark or a tag. With each opening is clearly associated a tag. With each opening is also associated a closure element as a connection element, on which is located the tag associated with the opening. The associations of tag and opening are controllable and storable in the control device and in the case of a specific association of all the tags with the particular openings a manipulation-free state can be displayed by the control device.
摘要:
A network filter for connecting a converter to a 3-phase supply network includes in each phase a toroidal inductor which is connected in series with a commutation inductor at a respective first connection point, and a capacitor circuit having at least four capacitances, wherein first terminals of a first, a second and a third capacitance is connected in one-to-one correspondence to a respective one of the first connection points. Second terminals of the first, second and third capacitance are connected at a common second connection point, with a fourth capacitance being connected between ground and the common second connection point. The windings of the toroidal inductors can be formed of the connecting lines which connect the corresponding first terminals to the three phases of the supply network.
摘要:
The invention relates to a device for detecting an amount while receiving and/or discharging a fluid having a gas portion comprising a measurement line for conducting the fluid, a flow measuring unit for the fluid, which is in fluid connection with the measurement line, a degree of filling measuring unit for the fluid, which is in fluid connection with the measurement line and which comprises an electrode arrangement for determining electrical properties of the fluid present in the measurement line, and an evaluation unit for determining the fluid amount conveyed which is in a signal connection with the degree of filling measuring unit and the flow measuring unit. According to the invention it is provided that the electrode arrangement of the degree of filling measuring unit has a plurality of electrode plates which form a plate stack in the region of the measurement line.
摘要:
The invention relates to a method for determining an amount during the transfer of a liquid, wherein the liquid is introduced at a supply opening into a measurement line and is removed from the measurement line at an outlet opening, and an amount of liquid flowing through the measurement line is determined by means of a flow measuring unit assigned to the measurement line. According to the invention, liquid present in the measurement line is discontinuously fed to a degassing arrangement. The invention further relates to a device for determining an amount during the transfer of a liquid.