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    Compensated variable optical attenuator
    201.
    发明申请
    Compensated variable optical attenuator 失效
    补偿可变光衰减器

    公开(公告)号：US20040223718A1

    公开(公告)日：2004-11-11

    申请号：US10784107

    申请日：2004-02-20

    Applicant: Rosemount Inc.

    Inventor： Mark G. Romo ,  Stanely E. Rud JR. ,  Charles R. Willcox ,  Robert J. Karschnia

    IPC: G02B006/00

    CPC classification number: G02B6/266 ,  G02B6/3502 ,  G02B6/3508 ,  G02B6/3552 ,  G02B6/3564 ,  G02B6/357 ,  G02B6/3572 ,  G02B6/3576 ,  G02B6/3582 ,  G02B6/3584 ,  G02B6/3586 ,  G02B6/3588 ,  G02B6/3594

    Abstract: An electrically variable optical attenuator and associated methods are disclosed. In one aspect, the attenuator includes at least one sensor that provides a sensor output with respect to a variable that affects attenuation. Methods of characterizing the attenuator include obtaining a set of attenuation/sensed variable data, and generating a relationship (such as a look-up table or mathematical function) relating the sensed variable to the attenuation. Aspects of the invention also include characterizing the control input/attenuation output to be related by a selected mathematical function.

    Abstract translation: 公开了一种电可变光衰减器及相关方法。 在一个方面，衰减器包括至少一个传感器，其相对于影响衰减的变量提供传感器输出。 表征衰减器的方法包括获得一组衰减/感测的可变数据，以及产生将感测的变量与衰减相关联的关系（诸如查找表或数学函数）。 本发明的方面还包括通过选择的数学函数来表征控制输入/衰减输出。

    Heated roll temperature measurement compensator assembly
    203.
    发明授权
    Heated roll temperature measurement compensator assembly 失效
    加热辊温度测量补偿器总成

    公开(公告)号：US3697726A

    公开(公告)日：1972-10-10

    申请号：US3697726D

    申请日：1971-09-17

    Applicant: ROSEMOUNT INC

    Inventor： GERONIME ROBERT L

    IPC: G01K13/08 ,  G05D23/24 ,  H05B6/14 ,  H05B1/02

    CPC classification number: G01K13/08 ,  G05D23/24 ,  H05B6/145

    Abstract: A temperature measurement and control device for rotating heated rolls, such as those used in the fiber processing industry. The temperature sensor is stationarily mounted and positioned in a slot at one end of a rotating roll, and the sensor is used for controlling power to a heater utilized with the roll. The sensor thus is used to control the temperature of the roll surface. At high roll speeds the thermal coupling between the sensor and the roll is adequate, but at lower speeds that are encountered during the slowing down and stopping of the rolls, the thermal coupling between the roll surfaces and the sensor reduces in efficiency and the sensor conducts a large proportion of heat to its mounting structure. The present device utilizes passing a current through the sensor to self-heat the sensor to compensate for this decrease in thermal coupling and resultant stem conduction error.

    Abstract translation: 用于旋转加热辊的温度测量和控制装置，例如在纤维加工业中使用的那些。 温度传感器固定安装并定位在旋转辊的一端的狭槽中，传感器用于控制与卷筒一起使用的加热器的电力。 因此，传感器用于控制辊表面的温度。 在高滚动速度下，传感器和滚筒之间的热耦合是足够的，但是在滚筒减速和停止期间遇到的较低速度下，辊表面和传感器之间的热耦合效率降低，传感器传导 对其安装结构的热量很大。 本装置利用通过传感器的电流来自我加热传感器以补偿热耦合的这种降低以及由此产生的干线传导误差。

    Measurement apparatus having non-contact electrical coupling to components on a moving surface
    204.
    发明授权
    Measurement apparatus having non-contact electrical coupling to components on a moving surface 失效
    具有非接触电耦合的测量装置与移动表面上的组件

    公开(公告)号：US3674963A

    公开(公告)日：1972-07-04

    申请号：US3674963D

    申请日：1970-10-19

    Applicant: ROSEMOUNT INC

    Inventor： SERRANO LEONARDO V

    IPC: G01K1/02 ,  G01K13/08 ,  H05B5/00

    CPC classification number: G01K1/024 ,  G01K13/08

    Abstract: A system for measuring temperature sensed by a resistance thermometer attached to a moving structure. Impedance of the resistance thermometer is coupled into an AC bridge and a variable resistor is also coupled into the bridge to balance the bridge when the thermometer changes in impedance due to temperature change. The resistance of the variable resistor is sensed by DC circuitry and a resultant DC signal proportional to temperature is thus provided.

    Abstract translation: 一种用于测量附着在移动结构上的电阻温度计感测温度的系统。 阻抗温度计的阻抗耦合到交流电桥中，并且当温度计由于温度变化而阻抗变化时，可变电阻器也耦合到桥中以平衡桥。 由DC电路检测可变电阻器的电阻，从而提供与温度成正比的结果DC信号。

    NON-METALLIC ISOLATOR SYSTEMS FOR INDUSTRIAL PROCESS PRESSURE TRANSMITTERS
    205.
    发明申请
    NON-METALLIC ISOLATOR SYSTEMS FOR INDUSTRIAL PROCESS PRESSURE TRANSMITTERS 有权

    公开(公告)号：US20250123170A1

    公开(公告)日：2025-04-17

    申请号：US18915861

    申请日：2024-10-15

    Applicant: Rosemount Inc.

    Inventor： Nicholas Meyer ,  Jacob D. Holm ,  Eric Petersen

    IPC: G01L19/06

    Abstract: A pressure transmitter includes a process connector configured to mount to a process vessel that carries a process fluid, a process pressure sensor and an isolator plug coupled to the process connector and configured to house the process pressure sensor. The isolator plug includes at least one internal fluid filled cavity that is in fluidic contact with the process pressure sensor. At least one transfer mount made of a metallic material is coupled to the isolator plug. The transfer mount includes an internal fluid filled cavity that is in fluid communication with the internal fluid filled cavity of the isolator plug. At least one isolation diaphragm exposed to the process fluid in the process connector is coupled to the transfer mount and configured to transfer process pressure to the internal fluid filled cavities of the transfer mount and the isolator plug and to the process pressure sensor.

    POWER MANAGEMENT IN INDUSTRIAL FIELD DEVICE
    208.
    发明公开
    POWER MANAGEMENT IN INDUSTRIAL FIELD DEVICE 审中-公开

    公开(公告)号：US20240231462A1

    公开(公告)日：2024-07-11

    申请号：US18406633

    申请日：2024-01-08

    Applicant: Rosemount Inc.

    Inventor： Matthew Then ,  Mehul Rajeshbhai Dalal

    IPC: G06F1/3206

    CPC classification number: G06F1/3206

    Abstract: A field device for use in an industrial process includes a transducer configured to couple to the industrial process and control or monitor a process variable of the industrial process. Primary communication circuitry communicates information with a remote location related to the process variable. A wireless communication module includes an energy storage device and power monitoring electronics coupled to the energy storage device having a power output and a power status output. Wireless communication circuitry of the wireless communication module is configured to communicate wirelessly and perform a plurality of high priority tasks and a plurality of low priority tasks. The high priority tasks are performed asynchronously and the plurality of low priority tasks are only performed if the power status output indicates that there is sufficient power.

    FIELD DEVICE CURRENT LIMITING
    210.
    发明公开
    FIELD DEVICE CURRENT LIMITING 审中-公开

    公开(公告)号：US20240204510A1

    公开(公告)日：2024-06-20

    申请号：US18084068

    申请日：2022-12-19

    Applicant: Rosemount Inc.

    Inventor： Yevgeny Yurevich Korolev ,  William Michael Mansfield ,  Xiong Gao

    IPC: H02H9/02

    CPC classification number: H02H9/02

    Abstract: A current limiting circuit for limiting a current through a pair of terminals powered from a 2-wire Advanced Physical Layer (APL) spur includes a current source, a first current limiter and a second current limiter. The current source is connected to one of the terminals and is configured to source a current that is conducted through the terminals and has an amplitude that is at a current source threshold. The first current limiter is connected to the current source and is configured to limit the amplitude below a first threshold. The second current limiter is connected to the first current limiter and is configured to limit the amplitude below a second threshold.

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