Today I will introduce you to a national invention authorized patent-a process variable transmitter with a dual-compartment housing. The patent was applied for by Rosemount and was granted an announcement on May 4, 2018. The invention relates to an industrial process control or monitoring system. In particular, the invention relates to a process variable transmitter configured to detect process variables in such a system. Process variable transmitters are used in industrial process control environments. This transmitter is connected to the process fluid to provide measurements related to the process. Process variable transmitters can be configured to monitor one or more fluids associated with processing plants such as slurries, liquids, vapors, and gases in chemical processing plants, pulp, oil, natural gas, pharmaceuticals, food, and other fluid processing plants Process variables. Exemplary monitored process variables include fluid pressure, temperature, flow rate, liquid level, pH, conductivity, turbidity, density, concentration, chemical composition, or other characteristics. Typically, process variable transmitters are located at remote locations, usually on site, and send information to a central location, such as a control room. Process variable transmitters detect process variables in a variety of applications including oil and gas refineries, chemical storage yards, or chemical processing plants. In many cases, this requires the process variable transmitter to be located in a harsh environment. Some types of process variable transmitters include a housing that is divided into two separate compartments. One compartment contains the electrical circuit and the other compartment contains the terminal block for connection to the process control loop. One such configuration is shown in US Patent No. 5,546,804. The present invention provides a process variable transmitter used in industrial control or monitoring processes, which includes a housing having a cavity formed therein. The housing includes an integrated wiring board defining first and second compartments in the cavity. The transmitter also includes a process variable sensor configured to detect the process variable of the industrial process. The measurement circuit is supported in the first compartment and is configured to receive the process variable signal from the process variable sensor and provide an output. The electrical connection is supported on the integrated wiring board in the second compartment and is electrically connected to the output of the measurement circuit. According to an embodiment of the present invention, a process variable transmitter used in an industrial process includes: a housing having a cavity formed therein, the cavity extending between a first opening and a second opening, the housing Including an integrated wiring board integrally formed with the housing as a single piece, the integrated wiring board defines a first compartment and a second compartment in the cavity and provides a seal between the first compartment and the second compartment; A variable sensor, which is configured to detect the process variable of the industrial process; a measurement circuit, which is carried in the first compartment and is configured to receive the process variable signal from the process variable sensor and provide an output; and a terminal connection, which is The second compartment is carried on the wiring board and electrically connected to the measurement circuit. The electronics housing includes a polymer. The process variable transmitter includes a terminal pin that extends through the polymer wall and provides an electrical connection between the measurement circuit and the terminal connector. The process variable transmitter includes a terminal screw assembly connected to the terminal pin and disposed in the second compartment. The terminal screw assembly includes a fork that extends into the integrated wiring board, thereby securing the terminal screw assembly to the integrated wiring board. Terminal connectors provide electrical connections to process variable sensors. Terminal connectors provide electrical connections to the two-wire process control loop. The process variable transmitter includes screws configured to secure the electrical connection to the terminal screw assembly. Process variable sensors include temperature sensors. According to another embodiment of the present invention, a method for manufacturing a process variable transmitter used in an industrial process includes the following steps: molding a process variable transmitter housing, the process variable transmitter housing having a formation The cavity therein includes an integrated wiring board that divides the cavity into a first compartment and a second compartment. The integrated wiring board and the process variable transmitter housing are integrally formed as a single piece, and the integrated wiring board provides the first compartment and Sealing between the second compartments; providing electrical connectors that extend from the first compartment through the integrated wiring board to the second compartment; placing measurements connected to the electrical connectors in the first compartment Electronics; and the terminal screw assembly connecting the process variable sensor and the measurement electronics to the second compartment, the terminal screw assembly is electrically connected to the electrical connector extending through the integrated terminal block and carried on the integrated terminal block . The measuring circuit is connected to the two-wire process control loop through the electrical connection by using the terminal screw assembly in the second compartment. The electrical connector includes a terminal pin. The method also includes the steps of: fixing the terminal screw assembly with a fork extending into the integrated wiring board, thereby fixing the terminal screw assembly to the integrated wiring board. Process variable sensors include temperature sensors. The method also includes the step of sealing the first compartment and the second compartment with an end cap. The method also includes the step of connecting the process control loop to the terminal connector in the second compartment.
Product catagories of stylus pen for ipad, which is just for iPad Versions 2018 & 2019 and above.
It can work on following:
iPad 6th 2018: A1893/A1954
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Figure is a schematic cross-sectional view of the present invention
iPad 7th 2019: A2197/A2198/A2200
iPad 8th 2020: A2270/A2428/A2429/A2430
iPad air 3rd: A2152/A2153/A2154/A2123
iPad Air 4th: A2072/A2316/A2324/2325
iPad mini 5th: A2124/A2125/A2126/A2133
iPad Pro 1st/2nd 11: A1980/A2013/A1934/A1979/A2228/A2068/A2230/A2231
iPad Pro 3rd/4th 12.9: A2069/A2229/A2233/A2232/A1876/A2014/A1895/A1983