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An Electrical Insulating Joint (EIJ) for a pipe-in-pipe electrically heated pipeline is provided. A ceramic disk under compressive load and dielectrics in an annulus provide electrical isolation and mechanical strength. An insulative liner extends around the ceramic disk to provide electrical isolat

An Electrical Insulating Joint (EIJ) for a pipe-in-pipe electrically heated pipeline is provided. A ceramic disk under compressive load and dielectrics in an annulus provide electrical isolation and mechanical strength. An insulative liner extends around the ceramic disk to provide electrical isolation when materials other than hydrocarbons pass through the EIJ. The insulative liner may be extended through a knee joint. Pressure ports may be used to monitor fluid leaks and a built-in transformer may be used to monitor electrical leakage current.

대표청구항 ▼

An Electrical Insulating Joint (EIJ) for a pipe-in-pipe electrically heated pipeline is provided. A ceramic disk under compressive load and dielectrics in an annulus provide electrical isolation and mechanical strength. An insulative liner extends around the ceramic disk to provide electrical isolat

An Electrical Insulating Joint (EIJ) for a pipe-in-pipe electrically heated pipeline is provided. A ceramic disk under compressive load and dielectrics in an annulus provide electrical isolation and mechanical strength. An insulative liner extends around the ceramic disk to provide electrical isolation when materials other than hydrocarbons pass through the EIJ. The insulative liner may be extended through a knee joint. Pressure ports may be used to monitor fluid leaks and a built-in transformer may be used to monitor electrical leakage current. of each electrical signal is compared with a pre-settable index value, wherein the sensory stimuli are automatically provided to the subject in the form of a sequence of different sensory stimuli. 13. The method as set forth in claim 12, wherein the sequence comprises acoustic and/or visual sensory stimuli and/or text, which are specifically pre-set or individually inputted into a data base for the subject. 14. The method as set forth in claim 12, wherein the sequence of sensory stimuli runs at a constant speed or at a pre-settably variable speed. 15. The method as set forth in claim 12, wherein a next stimulus from the sequence of sensory stimuli is only provided once the strength of an electrical signal detected in response to a preceding stimulus exceeds a pre-set threshold value. 16. The method as set forth in claim 12, wherein the pressure sensor used to measure the pressing force exerted by the subject is a letter balance or a hand muscle testing apparatus. 17. The method as set forth in claim 12, wherein electrical signals, detected while a sensory stimulus is provided and/or in a pre-determined time interval after a sensory stimulus has been provided, are digitised and stored in an intermediate memory. 18. The method as set forth in claim 12, wherein the digital signals are graphically edited and/or stored as a data set. 19. The method as set forth in claim 12, wherein the step of comparing the strength of each electrical signal to the pre-settable index value is preformed every time the difference between the strength of the physical or physiological activity and the index value for the strength of the physical or physiological activity is visually displayed. 20. The method as set forth in claim 12, wherein the step of comparing the strength of each electrical signal to the pre-settable index value is preformed every time the difference between the strength of the physical or physiological activity and the index value exceeds a pre-set threshold value a number of times. 21. The method as set forth in claim 12, wherein the subject is firstly provided with objectively incorrect information, and the strength of the physical or physiological activity in response to the objectively incorrect information is detected. 22. The method as set forth in claim 21, wherein the objectively incorrect information is derived from a data base of data sets specific to the subject. 23. The device as set forth in claim 1, wherein the device is used to test allergies in the subject.