公开(公告)号：WO1989011123A1

公开(公告)日：1989-11-16

申请号：PCT/US1989001939

申请日：1989-05-04

Applicant: ROSEMOUNT, INC.

Inventor： ROSEMOUNT, INC. ,  GELECINSKYJ, George ,  GOETZINGER, Charles, E. ,  PRO, John, D.

IPC: G05F01/56

CPC classification number: G01F1/60

Abstract: A current source (Figs. 1A and 1B) for establishing a relatively constant current through widely differing impedances (12, 12A) comprising a voltage potential regulator (20-41) for adjustably regulating a supplied potential to provide a current to a current controller (42, 43, 45-56) with a current sensor (44) to supply a signal to the current controller from the signal controller (42, 43, 45-56) to control the voltage potential regulator (20-41). A further current rise time regulator (62-74) is provided to increase the rise time occurence provided to a commutated load (12, 12a).

公开(公告)号：WO1989003512A1

公开(公告)日：1989-04-20

申请号：PCT/US1988003350

申请日：1988-09-28

Applicant: ROSEMOUNT, INC.

Inventor： ROSEMOUNT, INC. ,  SITTLER, Fred, C. ,  CRABTREE, James, H.

IPC: G01F01/68

CPC classification number: G01F1/6845 ,  G01F1/684 ,  G01N27/18 ,  G01N2030/025

Abstract: A thermal effect sensing device (10) comprises a semiconductor substrate (15) supporting an insulating layer (14) which has a thin film of platinum (12, 13, 16, 21) deposited on it. Holes (17, 20) are etched through the semiconductor substrate and the insulating layer. The platinum film is shaped to provide a serpentine resistive element (16) suspended over one of the holes (17). The serpentine element is suspended from the rim of the hole, but is otherwise unsupported. The resistive element has a low thermal mass and there is a low thermal resistance between the element and fluid in the sensor. The sensor senses thermal properties of the fluid in the sensor, such as mass flow or thermal conductivity. A second conductive film is insulatingly deposited on the first film to provide a resistive sensor (23) electrically isolated from a resistive heating element (16').

公开(公告)号：WO1991009274A1

公开(公告)日：1991-06-27

申请号：PCT/US1990006567

申请日：1990-11-08

Applicant: ROSEMOUNT, INC.

Inventor： ROSEMOUNT, INC. ,  HEDBERG, Eric, A.

IPC: G01C21/00

CPC classification number: G01L19/0007 ,  G01F1/46 ,  G01P5/165

Abstract: A short, strut-mounted, multifunction air data sensing probe (20) providing reduced drag, weight and radial cross section has a modular internal construction providing a multiple passageway pressure assembly (35) to transfer sensed pressure signals from individual sensing ports (25, 31, 32) on a probe barrel (21) to pressure carrying conduits (57, 62, 66, 73, 74) extending into the mounting strut (30) of the probe (20). The modular construction eliminates the need for having interior chambers made by fixing a series of difficult to locate bulkheads on the probe interior, with separate lines running from each of the chambers to provide the pressure signal from each of the ports. The modular construction also permits mounting a deicing heater (95) on internal parts other than the outer probe shell so that the manufacture of the probe (20) is furher simplified, and the types of material used for the probe shell (21) can be changed without concern about heater mounting.

公开(公告)号：WO1993021506A1

公开(公告)日：1993-10-28

申请号：PCT/US1993001774

申请日：1993-03-01

Applicant: ROSEMOUNT, INC.

Inventor： ROSEMOUNT, INC. ,  BRODEN, David, A.

IPC: G01L19/06

CPC classification number: G01L19/0663 ,  G01L13/026 ,  G01L19/142 ,  G01L19/147

Abstract: A transmitter (8) with a flame arresting header (16) senses a pressure of a process fluid with a diaphragm (44) which is sealed to the header. The diaphragm (44) transfers the pressure of the process fluid acting on an outer surface of the diaphragm (44) to a fill fluid (50). A pressure sensor (18) enclosed in the transmitter (8) senses the pressure of the fill fluid (50) providing an output representative of the pressure of the process fluid. The header (16) includes a chamber (48) on an outer face of the header (16) and a passageway (54) extending from the chamber (48) to a tapered opening (56) inside the transmitter (18) with a first portion (58) adjacent to the tapered opening (56) shaped to receive an inlet tube (52) sealed with a tapered seal and leading to the sensor (18) and a second flame isolating portion (70) open to the chamber (48). The second passageway portion (70) is shaped for flame isolating the tapered seal (60) from the process fluid.

公开(公告)号：WO1986001027A1

公开(公告)日：1986-02-13

申请号：PCT/US1985001398

申请日：1985-07-25

Applicant: ROSEMOUNT, INC.

Inventor： ROSEMOUNT, INC. ,  BOHARA, Robert, C. ,  RUF, James, A.

IPC: H01C01/012

CPC classification number: G01K7/183 ,  H01C7/021 ,  H01C17/003 ,  H01C17/12

Abstract: A platinum resistance thermometer (10) is formed in a process which includes the defining of a path for the resistance thermometer in an inert material (28) deposited in a layer on the substrate (24). The substrate surface (26) is exposed in the path, and the inert material (28) forms a negative pattern for the path. The resistive material for the thermometer is then deposited on both the substrate surface (26) exposed in the path and on the surfaces (32, 34) of the inert material remaining on the substrate. After this, the inert material (28) is etched away, and the resistive material (40) deposited on top of the inert material (28) is then loose and can be removed leaving a strip (12) of resistive material in the desired path for forming the resistive thermometer (10). The strip (12) has low contamination and impurities to more easily reach the desired temperature coefficient of resistance of the strip (12) forming the thermometer (10).

Abstract translation: 铂电阻温度计（10）以包括在沉积在基板（24）上的层中的惰性材料（28）中限定电阻温度计的路径的方法形成。 衬底表面（26）在路径中暴露，并且惰性材料（28）形成用于路径的负图案。 然后将用于温度计的电阻材料沉积在路径上暴露的衬底表面（26）和残留在衬底上的惰性材料的表面（32,34）上。 此后，惰性材料（28）被蚀刻掉，并且沉积在惰性材料（28）顶部上的电阻材料（40）然后是松散的并且可以被去除，留下所需路径中的电阻材料条（12） 用于形成电阻式温度计（10）。 条（12）具有低污染和杂质，以更容易地达到形成温度计（10）的条带（12）的期望温度系数。

公开(公告)号：WO1995006857A1

公开(公告)日：1995-03-09

申请号：PCT/US1994009421

申请日：1994-08-18

Applicant: ROSEMOUNT, INC.

Inventor： ROSEMOUNT, INC. ,  ROVNER, Bruce, D. ,  COURSOLLE, Thomas, P.

IPC: G01F01/60

CPC classification number: G01F1/60 ,  G01F1/002

Abstract: An electromagnetic fluid flowmeter (26) includes empty pipe detection circuitry. The empty pipe detection circuitry applies a common mode asynchronous signal into a pair of electrodes (16A, 16B) in the flowmeter (26). Impedance of fluid is determined by measuring the magnitude of the asynchronous signal between an electrode (16A, 16B) and electrical ground. Impedance is used to determine an empty pipe condition.

Abstract translation: 电磁流体流量计（26）包括空管检测电路。 空管检测电路将共模异步信号施加到流量计（26）中的一对电极（16A，16B）中。 通过测量电极（16A，16B）和电气接地之间的异步信号的大小来确定流体的阻抗。 阻抗用于确定空管状态。

公开(公告)号：WO1985002903A1

公开(公告)日：1985-07-04

申请号：PCT/US1984001981

申请日：1984-12-03

Applicant: ROSEMOUNT, INC.

Inventor： ROSEMOUNT, INC. ,  HAGEN, Floyd, W.

IPC: G01C21/10

CPC classification number: G01P5/175 ,  G01L19/0007

Abstract: Sensing instrument (10) for sensing the angular position of the longitudinal axis (17) of a cyclindrical sensor body (14) of an object moving relative to a fluid medium with respect to a first plane. Such object has a leading end portion (15) joined to the sensor body (14) and exposed to the fluid medium. A first pair of pressure sensing ports (20 and 21) are on the object and face in the upstream direction and have their axes lying in a second plane at right angles to said first plane and disposed at predetermined angles with respect to the axis (17) of the object. A second pair of pressure sensing ports (22 and 23) on the object have their axes lying in the first plane, such axes being disposed at predetermined angles with respect to the axis (17) of the object. A single pressure port (16) on the object has an axis coinciding with the axis (17) of the object. The improvement comprises the leading end portion (15) of the sensor body (14) defining a spherical segment of one base.

Abstract translation: 用于感测相对于第一平面相对于流体介质移动的物体的环形传感器主体（14）的纵向轴线（17）的角度位置的传感仪器（10）。 这种物体具有接合到传感器主体（14）并暴露于流体介质的前端部分（15）。 第一对压力传感端口（20和21）位于物体上并且在上游方向上面，并且它们的轴线位于与所述第一平面成直角的第二平面中并相对于轴线（17）以预定角度设置 ）的对象。 物体上的第二对压力传感端口（22和23）的轴线位于第一平面中，这些轴相对于物体的轴线（17）以预定的角度设置。 物体上的单个压力端口（16）具有与物体的轴线（17）重合的轴线。 该改进包括传感器主体（14）的前端部分（15），其限定一个基部的球形段。