公开(公告)号：WO1989002061A1

公开(公告)日：1989-03-09

申请号：PCT/US1988002794

申请日：1988-08-15

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  HAGEN, Floyd, W. ,  DELEO, Richard, V.

IPC: G01C21/00

CPC classification number: G01P5/165 ,  G01P13/025

Abstract: An air data sensor comprises a shaft probe (15) having a sharp edge orifice pitot port (24), and a tapered leading end (21) which blends into the main barrel portion (20) of the probe (15) a short distance downstream from the pitot port (24). Sets of sensing ports (31, 32, 33, 34) are utilized and at least one pair of ports (31, 32) or (33, 34) is oriented on a common axis and facing in opposite directions. By using the pressures sensed in more than one combination of ports, that is by co-using the pressure signals, static pressure, impact pressure, angle of attack and angle of sideslip can be derived. The ports (31, 32, 33, 34) are positioned on the tapered forward section (21), rearwardly of the pitot port (24) before the full size of the barrel (20) is reached, and are positioned very close to the leading end (24) for reliable readings at high angles of attack.

公开(公告)号：WO1988009980A1

公开(公告)日：1988-12-15

申请号：PCT/US1988001869

申请日：1988-06-02

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  KLEVEN, Lowell, A.

IPC: G08B19/02

CPC classification number: G08B19/02 ,  B64D15/20

Abstract: An ice detector circuit (10) for sensing an ice deposition on a sensing surface (14) of an ice detector probe (12) from an air mass flowing relative to the probe (12). The probe (12) includes a heater (16) to heat the sensing surface (14) and a temperature sensor (18) for sensing the sensing surface temperature during heating. The temperature sensor (18) provides the circuit (10) with an output having a level varying as a function of the sensing surface temperature. The circuit (10) includes a controller (24) which selectively energizes the heater (16), a timer (26) which provides a timing output representative of a time interval elapsed between selected temperature sensor output levels, and computing means (28), such as a microprocessor, which computes an output representative of ice deposition as a function of a predetermined relationship between ice deposition and the timing output.

公开(公告)号：WO1988009941A1

公开(公告)日：1988-12-15

申请号：PCT/US1988001870

申请日：1988-06-02

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  KLEVEN, Lowell, A.

IPC: G01W01/00

CPC classification number: B64D15/20 ,  G08B19/02

Abstract: An ice detector probe (10) senses an ice deposition from an air mass flowing relative to the probe (10). The probe (10) includes a support (12) for installation of the probe (10) to receive the airflow and an element (30) formed on a substrate having a sensing surface (32) which directly receives the airflow. The element (30) heats the sensing surface (32) to melt an ice deposition formed thereon. The element (30) also senses the sensing surface temperature during heating and provides an output representative of such temperature.

Abstract translation: 冰检测器探针（10）感测来自相对于探针（10）流动的空气质量的冰沉积。 探针（10）包括用于安装探针（10）以容纳气流的支撑件（12）和形成在具有直接接收气流的感测表面（32）的基底上的元件（30）。 元件（30）加热感测表面（32）以熔化其上形成的冰沉积物。 元件（30）还在加热期间感测感测表面温度，并且提供代表这种温度的输出。

公开(公告)号：WO1988008959A1

公开(公告)日：1988-11-17

申请号：PCT/US1988001552

申请日：1988-05-11

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  CORPRON, Gary, P. ,  KLEVEN, Lowell, A. ,  JOHNSON, Lawrence, Alan

IPC: G01B11/00

CPC classification number: G01D5/268 ,  G01F1/3245 ,  G01P13/00

Abstract: The optical displacement sensor (10) modulates intensity of the light beam as a function of the physical displacement. The sensor includes a reflector (24) positioned in a path of the light beam between a light source (12) and a light detector (14). The reflector (24) has a non-reflective portion (28) surrounded by a reflective portion (26). Relative movement (displacement) of the beam and the reflector occurs as a function of a parameter which is being sensed. In a normal (no displacement) condition, the non-reflective portion (28) can be positioned with respect to the light beam so that intensity of the light beam received by the detector (14) is at a minimum, and the sensor (14) is operating in a darkfield mode. Displacement from the normal position causes an increase in the light intensity received by the detector (14).

公开(公告)号：WO1988002509A1

公开(公告)日：1988-04-07

申请号：PCT/US1987002382

申请日：1987-09-21

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  BROWN, Gregory, C. ,  CUCCI, Gerald, R.

IPC: G05D16/00

CPC classification number: G05D7/005 ,  Y10T137/2365 ,  Y10T137/2409 ,  Y10T137/7759 ,  Y10T137/7761

Abstract: A current-to-pressure (I/P) converter (20) provides an output pressure as a function of the magnitude of a variable input DC current. The I/P converter (20) includes a pressure sensor (64) which produces a feedback signal representative of the output pressure. Based upon the feedback signal and the magnitude of the input DC current, an electrical control signal is produced which controls a device (40) for varying the output pressure. The I/P converter (20) also includes a circuit (86) for generating a time-varying signal which is sent back over the current loop wires (28) through which the input DC current flows. The time-varying signal provides an indication of whether the I/P converter (20) is functioning properly. This permits diagnosis of possible causes of control system malfunctions without having to inspect the I/P converter (20) itself.

公开(公告)号：WO1988001049A1

公开(公告)日：1988-02-11

申请号：PCT/US1987001713

申请日：1987-07-23

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  KNECHT, Thomas, A. ,  ROMO, Mark, G.

IPC: G01L07/08

CPC classification number: G01L19/147 ,  G01L13/025 ,  G01L19/0038 ,  Y10S73/04

Abstract: A deflecting diaphragm differential pressure sensor (10) is formed so all electrical elements (30A-30D) and connections (34B) from external circuitry to the sensor (10) are isolated from the pressure media. The deflecting, pressure sensing diaphragm (22) is made of a semi-conductor material, having piezoresistors disposed on a surface (25) thereof to form strain gages to sense deflection of the diaphragm (22). The strain gage resistors are media isolated by a layer that overlies the strain gage resistors. All forms of the invention provide environmental protection for the electrical connections for external circuitry, which are subject to corrosion from the pressure media.

公开(公告)号：WO1987006711A1

公开(公告)日：1987-11-05

申请号：PCT/US1987000834

申请日：1987-04-16

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  FRICK, Roger, L. ,  SCHULTE, John, P.

IPC: G01R11/52

CPC classification number: G01R29/24 ,  G01L9/125

Abstract: A measurement circuit (10) provides an output signal as a function of an input signal. The measurement circuit includes a charge generator (18) which provides packets of charge as a function of the input signal to a measurement element (34). The measurement element (34) measures the charge provided and provides a measurement signal as a function of the charge received. The measurement signal (28) is coupled to a feedback circuit (9) which couples to switches in the charge generator (18) to control production of charge packets. The feedback circuit (9) provides at least one output signal indicative of the quantity or number of charge packets provided.

公开(公告)号：WO1987005146A1

公开(公告)日：1987-08-27

申请号：PCT/US1987000252

申请日：1987-02-06

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  SITTLER, Fred, C. ,  TOY, Adrian, C.

IPC: H01C01/012

CPC classification number: G01K7/183 ,  H01C1/028 ,  H01C7/021

Abstract: A thin film platinum resistance thermometer capable of operation at elevated temperatures includes a benign dielectric layer (24) covering the thin film platinum resistance temperature sensing element (14) and a barrier layer (26) overlying the dielectric layer (24). The barrier layer (26), which is preferably titanium dioxide, resists diffusion or contaminants which would alter the electrical characteristics of the sensing element (14), while permitting diffusion of oxygen through the barrier layer (26).

公开(公告)号：WO1986002486A1

公开(公告)日：1986-04-24

申请号：PCT/US1985001931

申请日：1985-10-08

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  KNECHT, Thomas, A. ,  FRICK, Roger, L. ,  SCHULTE, John, P.

IPC: H01G07/00

CPC classification number: G01L9/0073 ,  H01G5/16 ,  Y10T29/43

Abstract: A capacity sensing cell (10) is adapted for manufacture in a batch process, and uses a substrate or base (11) from a rigid insulating material such as glass and a diaphragm assembly (12, 14, 15) of a brittle semiconductor. The diaphragm assembly (12, 14, 15) and the substrate (11) are anodically bonded together. A very shallow recess (20) is formed on either the diaphragm or the substrate to accommodate a deposited capacitor plate (24). Two such assemblies (10) are connected together and the assembly is filled with noncompressible fluid to slightly bow the diaphragms (15) away from the substrates (11). Differential pressure between the diaphragm assemblies (12, 14, 15) is sensed by detecting the relative positions of the two diaphragms (15).

Abstract translation: 容量感测单元（10）适于以间歇方式制造，并且使用来自诸如玻璃的刚性绝缘材料的基底或基底（11）和脆性半导体的隔膜组件（12,14,15）。 隔膜组件（12,14,15）和基板（11）阳极结合在一起。 在隔膜或基板上形成非常浅的凹部（20），以容纳沉积的电容器板（24）。 两个这样的组件（10）连接在一起，并且组件填充有不可压缩流体，以使离开基板（11）的隔膜（15）略微弯曲。 通过检测两个隔膜（15）的相对位置来感测隔膜组件（12,14,15）之间的差压。

公开(公告)号：WO1985005185A1

公开(公告)日：1985-11-21

申请号：PCT/US1985000594

申请日：1985-04-05

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  KOOSMANN, Mark, R.

IPC: G01N29/00

CPC classification number: G01N29/12 ,  B64D15/20 ,  G01N2291/0251 ,  G01W1/00

Abstract: An ice detector of the vibrating element type comprises a tube (32) that vibrates along its longitudinal axis, and is driven by an excitation coil (20) at the natural frequency of the tube (32) is sealed by a diaphragm (35) which has a surface exposed to an air stream in which icing is to be sensed. The exposed diaphragm surface is deflectable during vibration of the tube (32) at a flexible support portion (38) of the diaphragm (35). As ice accumulates on the exposed surface of the flexible support (38) the spring rate or flexibility support (38) changes, thereby changing the natural frequency of the vibration of the tube section (32). The changes in the natural frequency are sensed to determine that ice is accumulating. The diaphragm (35) is of low mass, and small so that stiffness of small amounts of ice significantly changes the spring constant of the flexible support (38) and the diaphragm (35) is shaped to conform to adjacent aerodynamic surfaces (11).