公开(公告)号：WO1985002676A1

公开(公告)日：1985-06-20

申请号：PCT/US1984002008

申请日：1984-12-07

Applicant: ROSEMOUNT INC. ,  KOOIMAN, Robert, R.

Inventor： ROSEMOUNT INC.

IPC: G01L07/08

CPC classification number: G01L13/025

Abstract: A transducer (10) for sensing pressure has a first (60) and a second (62) pressure chamber for sensing pressure and a center stop (20) which has two substantially flat faces (52, 54), each face cooperating with an associated sensor diaphragm (32, 42) which forms the first and the second pressure chamber (60, 62). The two chambers (60, 62) are fluidically coupled together. Each of the diaphragms (32, 42) is responsive to a pressure (P1 or P2) respectively and the transducer (10) is easily configured to sense differential, gage or absolute pressure. When the pressure to be sensed exceeds a predetermined value the affected sensing diaphragm (32, 42) is supported by the respective substantial flat face (52, 54) of the center stop (20).

公开(公告)号：WO1985001578A1

公开(公告)日：1985-04-11

申请号：PCT/US1984001474

申请日：1984-09-17

Applicant: ROSEMOUNT INC.

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

IPC: G01L07/00

CPC classification number: G01P5/165 ,  G01L19/0007

Abstract: A sensing instrument (24) is used for sensing atmospheric pressure and the output is connected in a method of operation to provide accurate measurement information. The instrument (24) comprises an enclosure (26) that has a shape exposed to a fluid medium, which fluid medium may be moving at a certain velocity relative to the sensing instrument. The sensing instrument has at least one port (28) open to the fluid medium for sensing the velocity of the medium and for measuring a pressure of the fluid medium. The measured pressure is corrected for the effects of the velocity of the medium according to the formula PATM=PM + K2 V where PATM is atmospheric pressure, PM is measured pressure in the enclosure means, K2 is a constant that is a function of the shape of the enclosure means, the shape of the port means and the density of the medium and V is the velocity of the medium.

Abstract translation: 感测仪器（24）用于感测大气压力，并且输出以操作方法连接以提供精确的测量信息。 仪器（24）包括具有暴露于流体介质的形状的外壳（26），该流体介质可相对于感测器具以一定速度移动。 传感仪器具有至少一个通向流体介质的端口（28），用于感测介质的速度并用于测量流体介质的压力。 根据公式PATM = PM + K2 V 2对介质的速度的影响进行校正，其中PATM是大气压，PM是围封装置中的测量压力，K2是作为一个函数的常数 外壳形状的形状，端口装置的形状和介质的密度，V是介质的速度。

公开(公告)号：WO1984000087A1

公开(公告)日：1984-01-05

申请号：PCT/US1983000892

申请日：1983-06-06

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  WEHRS, David, L.

IPC: H03K05/00

CPC classification number: H03K9/06 ,  G01R23/06

Abstract: A circuit (10) receives a cyclic input signal having a frequency determined by a source (11), which frequency may vary in accordance with a parameter or condition to be measured, for example. The circuit (10) very precisely provides an output current representative of the frequency of the input signal. In particular, the circuit uses a pair of regulated and different voltages (16) (17), one (16) of which is impressed upon an averaging circuit (30) for a preselected time during each cycle of the input signal, and the other voltage (17) is impressed upon the averaging circuit (30) during the time when the first signal is not connected to the averaging circuit. A control signal (Vo) is developed from the averaging circuit (30) which is a function of the average of the voltage provided to the averaging circuit, and the control signal (Vo) in turn is used for controlling a current control amplifier (60) and transistors (61) (62) which in turn control current flow through a load (40) connected to output terminals (36) (37) and through a feedback resistor (63). The use of regulated voltage sources (16) (17) for deriving the current control signal insures great stability, relatively low cost, and precise operation.

Abstract translation: 电路（10）接收具有由源（11）确定的频率的循环输入信号，该频率可以根据例如待测量的参数或条件而变化。 电路（10）非常精确地提供表示输入信号频率的输出电流。 特别地，该电路使用一对调节和不同的电压（16）（17），其中一个（16）在输入信号的每个周期期间被预先选定的时间施加在平均电路（30）上，而另一个 在第一信号未连接到平均电路的时间期间，在平均电路（30）上施加电压（17）。 从作为提供给平均电路的电压的平均值的函数的平均电路（30）产生控制信号（Vo），控制信号（Vo）又用于控制电流控制放大器 ）和晶体管（61）（62），其又控制电流流过连接到输出端子（36）（37）的负载（40）并通过反馈电阻器（63）。 使用调节电压源（16）（17）导出电流控制信号可确保极大的稳定性，相对较低的成本和精确的操作。

公开(公告)号：WO1983000217A1

公开(公告)日：1983-01-20

申请号：PCT/US1982000855

申请日：1982-06-24

Applicant: ROSEMOUNT INC.

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

IPC: G01C21/00

CPC classification number: G01P5/165

Abstract: Un tube statique multiple monté avec des entretoises permet d'obtenir, comme cela est illustré, des systèmes multiples séparés de mesure de pressions statiques et utilise une sonde (10) avec des ensembles séparés (23, 24 et 35, 36) d'orifices de détection de pression pour chaque système. La sonde (10) est conçue avec une configuration de surface qui établit des conditions de pression statique sensiblement identiques pour chaque ensemble d'orifices de détection (23, 24 et 35, 36), la longueur axiale de la partie cylindrique (14) de la sonde de détection (10) étant maintenue à un minimum et les effets de pression provenant des structures adjacentes telles que l'entretoise (13) étant compensées. La structure comprend une partie cylindrique (14) de la sonde (10) ayant une configuration d'ondes annulaires en surface (27, 28, 29, 30) avec des sections de diamètres différents qui provoquent des changements importants et uniformes de la pression le long de la sonde (10) pour établir des zones de niveaux de pression positives et négatives pour une compensation aérodynamique. Les positions des orifices (23, 24 et 35, 36) pour les systèmes séparés sont sélectionnées à partir d'un profil de pression de la sonde, de sorte que les orifices se trouvent dans des zones de pression désirées.