The Experts below are selected from a list of 1842 Experts worldwide ranked by ideXlab platform

S. Shimada - One of the best experts on this subject based on the ideXlab platform.

  • Design method for sensing body of differential Pressure Transmitter using silicon diaphragm-type Pressure sensor
    IEEE Transactions on Instrumentation and Measurement, 1995
    Co-Authors: Y. Matsuoka, T. Tobita, Y. Yamamoto, S. Shimada, A. Yasukawa
    Abstract:

    This paper describes a design method for the three-diaphragm-type sensing body of a differential Pressure Transmitter. This sensing body protects the silicon diaphragm-type Pressure sensor from over-Pressure. The design method includes information on how to decide the stiffness of each metal diaphragm and the liquid quantity needed to fill the sensing body. The differential Pressure Transmitter, with significant stabilities, has zero-influence errors of static Pressure and over-Pressure of less than -0.2% and /spl plusmn/0.1%, respectively, and is obtained at a measuring span of 25 kPa and a line Pressure of 15 MPa.

  • Development of very small differential Pressure Transmitter
    Conference Proceedings. 10th Anniversary. IMTC 94. Advanced Technologies in I & M. 1994 IEEE Instrumentation and Measurement Technolgy Conference (Cat, 1994
    Co-Authors: T. Tobita, Y. Yamamoto, M. Fukunaga, T. Kobayashi, S. Shimada, S. Ugai, A. Kouno, M. Arai
    Abstract:

    This paper describes development of very small intelligent differential Pressure Transmitter using semiconductor multiple Pressure sensor. The study focuses on the structural design, system and compensation algorithms to achieve the compact. A very small semiconductor Pressure sensor based on piezoresistive gauge placed in the small sensing body converts three quantities to electric signal. The structural and response analysis of the sensing body to achieve the compact has been studied. The microprocessing unit compensates the output of Transmitter of refering the three signal to calibration data and does it's self-diagnosis included the damage of sensor and sensing body.

  • Designing method for sensing body mechanism of differential Pressure Transmitter using silicon diaphragm type Pressure sensor
    Conference Proceedings. 10th Anniversary. IMTC 94. Advanced Technologies in I & M. 1994 IEEE Instrumentation and Measurement Technolgy Conference (Cat, 1994
    Co-Authors: Y. Matsuoka, T. Tobita, Y. Yamamoto, S. Shimada, A. Yasukawa
    Abstract:

    This paper describes a designing method of the three-diaphragm type sensing body of differential Pressure Transmitter for protecting silicon diaphragm type Pressure sensor from an over-Pressure. This method includes how to decide each stiffness of three metal diaphragms and liquid quantity filled in the sensing body. This method is applied to differential Pressure Transmitters with measuring ranges from 0-0.6 kPa to 0-400 kPa. As a result, Transmitters with significant stabilities are obtained: a zero and span influence of a static Pressure and an over-Pressure are less than 0.2% at a line Pressure of 15 MPa.

  • Intelligent differential Pressure Transmitter with multiple sensor formed on a
    IEEE Transactions on Industrial Electronics, 1991
    Co-Authors: S. Shimada, S. Ugai, S. Sakamoto, A. Sase, Y. Shimizu
    Abstract:

    A multiple piezoresistive gauge sensor was developed for application to intelligent differential Pressure Transmitters. The sensor can measure differential Pressure, static Pressure, and temperature. Three piezoresistive gauges are positioned on a

  • Intelligent differential Pressure Transmitter with a multiple sensor formed on
    [Proceedings] IECON '90: 16th Annual Conference of IEEE Industrial Electronics Society, 1990
    Co-Authors: S. Shimada, S. Ugai, S. Sakamoto, A. Sase, Y. Shimizu
    Abstract:

    A multiple piezoresistive gauge sensor was developed for application to intelligent differential Pressure Transmitters. The sensor can measure three quantities, i.e., differential Pressure, static Pressure, and the temperature. Three piezoresistive gauges are positioned on a

A. Yasukawa - One of the best experts on this subject based on the ideXlab platform.

  • Design method for sensing body of differential Pressure Transmitter using silicon diaphragm-type Pressure sensor
    IEEE Transactions on Instrumentation and Measurement, 1995
    Co-Authors: Y. Matsuoka, T. Tobita, Y. Yamamoto, S. Shimada, A. Yasukawa
    Abstract:

    This paper describes a design method for the three-diaphragm-type sensing body of a differential Pressure Transmitter. This sensing body protects the silicon diaphragm-type Pressure sensor from over-Pressure. The design method includes information on how to decide the stiffness of each metal diaphragm and the liquid quantity needed to fill the sensing body. The differential Pressure Transmitter, with significant stabilities, has zero-influence errors of static Pressure and over-Pressure of less than -0.2% and /spl plusmn/0.1%, respectively, and is obtained at a measuring span of 25 kPa and a line Pressure of 15 MPa.

  • Designing method for sensing body mechanism of differential Pressure Transmitter using silicon diaphragm type Pressure sensor
    Conference Proceedings. 10th Anniversary. IMTC 94. Advanced Technologies in I & M. 1994 IEEE Instrumentation and Measurement Technolgy Conference (Cat, 1994
    Co-Authors: Y. Matsuoka, T. Tobita, Y. Yamamoto, S. Shimada, A. Yasukawa
    Abstract:

    This paper describes a designing method of the three-diaphragm type sensing body of differential Pressure Transmitter for protecting silicon diaphragm type Pressure sensor from an over-Pressure. This method includes how to decide each stiffness of three metal diaphragms and liquid quantity filled in the sensing body. This method is applied to differential Pressure Transmitters with measuring ranges from 0-0.6 kPa to 0-400 kPa. As a result, Transmitters with significant stabilities are obtained: a zero and span influence of a static Pressure and an over-Pressure are less than 0.2% at a line Pressure of 15 MPa.

T. Tobita - One of the best experts on this subject based on the ideXlab platform.

  • Design method for sensing body of differential Pressure Transmitter using silicon diaphragm-type Pressure sensor
    IEEE Transactions on Instrumentation and Measurement, 1995
    Co-Authors: Y. Matsuoka, T. Tobita, Y. Yamamoto, S. Shimada, A. Yasukawa
    Abstract:

    This paper describes a design method for the three-diaphragm-type sensing body of a differential Pressure Transmitter. This sensing body protects the silicon diaphragm-type Pressure sensor from over-Pressure. The design method includes information on how to decide the stiffness of each metal diaphragm and the liquid quantity needed to fill the sensing body. The differential Pressure Transmitter, with significant stabilities, has zero-influence errors of static Pressure and over-Pressure of less than -0.2% and /spl plusmn/0.1%, respectively, and is obtained at a measuring span of 25 kPa and a line Pressure of 15 MPa.

  • Development of very small differential Pressure Transmitter
    Conference Proceedings. 10th Anniversary. IMTC 94. Advanced Technologies in I & M. 1994 IEEE Instrumentation and Measurement Technolgy Conference (Cat, 1994
    Co-Authors: T. Tobita, Y. Yamamoto, M. Fukunaga, T. Kobayashi, S. Shimada, S. Ugai, A. Kouno, M. Arai
    Abstract:

    This paper describes development of very small intelligent differential Pressure Transmitter using semiconductor multiple Pressure sensor. The study focuses on the structural design, system and compensation algorithms to achieve the compact. A very small semiconductor Pressure sensor based on piezoresistive gauge placed in the small sensing body converts three quantities to electric signal. The structural and response analysis of the sensing body to achieve the compact has been studied. The microprocessing unit compensates the output of Transmitter of refering the three signal to calibration data and does it's self-diagnosis included the damage of sensor and sensing body.

  • Designing method for sensing body mechanism of differential Pressure Transmitter using silicon diaphragm type Pressure sensor
    Conference Proceedings. 10th Anniversary. IMTC 94. Advanced Technologies in I & M. 1994 IEEE Instrumentation and Measurement Technolgy Conference (Cat, 1994
    Co-Authors: Y. Matsuoka, T. Tobita, Y. Yamamoto, S. Shimada, A. Yasukawa
    Abstract:

    This paper describes a designing method of the three-diaphragm type sensing body of differential Pressure Transmitter for protecting silicon diaphragm type Pressure sensor from an over-Pressure. This method includes how to decide each stiffness of three metal diaphragms and liquid quantity filled in the sensing body. This method is applied to differential Pressure Transmitters with measuring ranges from 0-0.6 kPa to 0-400 kPa. As a result, Transmitters with significant stabilities are obtained: a zero and span influence of a static Pressure and an over-Pressure are less than 0.2% at a line Pressure of 15 MPa.

J. Blázquez - One of the best experts on this subject based on the ideXlab platform.

  • In situ surveillance of capacitive Pressure Transmitter dynamic poles
    Nuclear Technology, 2020
    Co-Authors: M. Balbás, C. Montalvo, A. García-berrocal, J. Blázquez
    Abstract:

    In this work, a methodology is proposed to find the dynamic poles of a capacitive Pressure Transmitter in order to enhance and extend the online surveillance of this type of sensor based on the response time measurement by applying noise analysis techniques and the dynamic data system procedure. Several measurements taken from a pressurized water reactor have been analyzed. The methodology proposes an autoregressive fit whose order is determined by the sensor dynamic poles. Nevertheless, the signals that have been analyzed could not be filtered properly in order to remove the plant noise; thus, this was considered as an additional pair of complex conjugate poles. With this methodology we have come up with the numerical value of the sensor second real pole in spite of its low influence on the sensor dynamic response. This opens up a more accurate online sensor surveillance since the previous methods were achieved by considering one real pole only.

  • When a Pressure Transmitter leaves the linearity: the Rosemount Case
    International Journal of Nuclear Energy Science and Technology, 2006
    Co-Authors: J. Blázquez
    Abstract:

    When a Rosemount Pressure Transmitter experiences the inner silicone oil-loss syndrome, it loses its linear behaviour. In such a case, the response time is not unique; as a consequence, focusing the sensor surveillance to the response time, as required by the technical specifications of the nuclear plant, might have no sense. In which way is the sensor dynamic not linear? Answering this open question is the main objective of this work. A bilinear model can explain most of the features of the noise signal. A more elaborated model is built in order to explain the results of the deterministic experiments. The corresponding non-linear differential equation is solved exactly for the step response, and an approximate expression is found for the anomalous response time. When the driving term of the dynamic is not a step, the differential equation is solved approximately using the Picard iteration procedure. It gives some light on why the oscillations lose symmetry or why the amplitude probability of the noise signal shows skewness.

  • non linear noise analysis from a capacitive Pressure Transmitter
    Mechanical Systems and Signal Processing, 2004
    Co-Authors: A Garciaberrocal, J.m. Chicharro, J. Blázquez, M. Balbás
    Abstract:

    Abstract When the capacitive Pressure Transmitters—Rosemount type—experience a silicone oil-loss from its inner structure, they do not behave as a linear dynamical system. Such an anomaly is reflected on the noise signal. In this work, a non-linear model for the sensor and the sensing line is defined. It explains the main features of the noise signal as measured in service and in the laboratory.

  • Pressure Transmitter SURVEILLANCE USING QUATERNION NUMBERS
    Mechanical Systems and Signal Processing, 2002
    Co-Authors: J.m. Chicharro, M. Balbás, A. García-berrocal, J. Blázquez
    Abstract:

    Rosemount Pressure Transmitters are widely used in Nuclear Power Plants. Mandatory surveillance is focused on the ramp response time, which is calculated using noise analysis techniques. But the response time only accounts for the sensing diaphragm degradation. Considering the other components, a technique for early failure detection is developed. It uses simple properties of the quaternion algebra, mainly the non-commutativity of the multiplication rule. Quaternions are built from the Transmitter noise signal. The design of a specific quaternion for a given component is based on an electrical analogy of the Transmitter physical model.

  • Pressure Transmitter surveillance : the dominant real pole case
    Progress in Nuclear Energy, 1995
    Co-Authors: J. Blázquez, J. Ballestrín
    Abstract:

    Abstract There are about 500 Pressure Transmitters in a Nuclear Power Plant. Due to Safety requirements, some of them must be specially surveilled. Sensor response time to a Pressure ramp is the usual quantity to be measured. Response time, τ r , reflects the dynamics of the sensor and the sensing line. A real pole is due to the inner sensor structure, but the complex pole stands for the sensing line too. The real pole usually is the dominant in most sensors. On line monitoring noise analysis regards simultaneously both, the sensor and the sensing line, but the noise signal contains not only the sensor poles, but many others coming from the Plant, so must be conditioned previously and the determination of τ r is not free of systematic errors. That is the price to be paid for non disturbing the Plant. When the real pole is dominant, the sensing line contribution is negligible, so the on line noise monitoring methods are supported by the laboratory experiments and the real pole border in the PSD is properly identified. The mean square frequency results proportional to τ r −1 , so manual techniques are designed for response time surveillance made by non noise Plant's maintenance technicians.

Nirupama Mandal - One of the best experts on this subject based on the ideXlab platform.

  • Design of a Smart Pressure Transmitter and Its Temperature Compensation Using Artificial Neural Network
    Journal of Control Automation and Electrical Systems, 2019
    Co-Authors: Sunita Sinha, Nirupama Mandal
    Abstract:

    This paper presents a smart Pressure Transmitter using bellow as primary sensor. The deflection of bellow is converted into electrical output using hall probe sensor as secondary sensor. The output Hall voltage is affected by change in input parameters like temperature. So firstly the effect of temperature on Hall voltage is derived mathematically and then experimentally analyzed. This effect of temperature on output Hall voltage is then compensated using artificial neural network. The compensated output Hall voltage is then converted into (4–20) mA current signal using signal conditioning circuit. The proposed design, experimental and testing results are reported in this paper.

  • Design and development of a capacitance-based wireless Pressure Transmitter
    IET Science Measurement & Technology, 2018
    Co-Authors: Sunita Sinha, Rupam V. Kachhap, Nirupama Mandal
    Abstract:

    A novel, cost- effective and efficient wireless Pressure measurement system is modeled for transmission of the signal in harsh environment. The sensing part involves rubber bellows with a capacitive sensor made of copper plates. For remote transmission, monitoring and controlling the mechanical displacement of the bellows is converted into dc output voltage using differentiator and precision half wave rectifier. A linearization circuit is also designed, which linearized the output voltage with a value of percentage deviation from linearity of ±1.8%. For further FSK mode of transmission, the obtained linearized voltage is converted into 1 to 5 volt with a signal conditioning circuit. The transmitted output voltage is recovered using FSK demodulator circuit, LPF and a Decision circuit at receiving end. The full scale percentage error of the measurement system lies within 5% which is in an acceptable range. The proposed method is an economic and efficient transmission technique in hazardous areas where wired transmission is not feasible. The mathematical equations explaining the functioning of the proposed Transmitter have been derived. The operation of the proposed Pressure Transmitter has been experimentally tested. The design approach, mathematical analysis and experimental results of the proposed model are reported in this paper.

  • Design and Analysis of an Electro-Optic Type Pressure Transmitter Using Bellows as Primary Sensor
    IEEE Sensors Journal, 2018
    Co-Authors: Praveen Maurya, Nirupama Mandal
    Abstract:

    In process industries, an optical transmitting system has a great impact especially for long distance transmission through inflammable and hazardous areas. A combination of bellows and Mach-Zehnder Interferometer (MZI)-based Pressure transmitting system has been proposed in this paper. This novel approach is capable to transmit Pressure reading to a remote location using an electro-optic modulation in the MZI. The proposed system is the hybrid type and consists of two sections. First part is the electrical type which is responsible for transmission of measured information in an electrical domain (primary) and a second section is designed for transmission of measured information in an optical domain (secondary). Primary part is the combination of bellows, a Hall probe sensor, and a signal conditioning circuit, and the second part consists of the MZI with three electrodes. The Pressure is directly applied to the bellows. The magnet is placed at the top of the Bellows and the variation of the magnet positions is sensed by the Hall probe sensor. The response of the Hall probe sensor, in terms of millivolt range, is not capable to perform the electro-optic modulation in the MZI, so it is further amplified by an instrumentation amplifier and a calibrating circuit. The output from the signal conditioning circuit is fed to the MZI so that the intensity of light which is propagating in the MZI is modulated due to the electro-optic effect. Transmission of the optical signal is very much beneficial for the inflammable industry to prevent the sparking like situation. The operation of the system has been explained with the help of derived theoretical equations. The experiment has been done and the performance of the system along with the experimental results is reported in this paper. The proposed system is linear and provides good repeatability with the applied Pressure.

  • design and analysis of hall effect probe based Pressure Transmitter using bellows as sensor
    IEEE Transactions on Instrumentation and Measurement, 2015
    Co-Authors: Gurindapalli Rajita, Nirupama Mandal, Deblina Banerjee, Satish Chandra Bera
    Abstract:

    Bellows is an elastic-type Pressure sensor used as a local indicator in industry. Transmission of bellows reading to a remote location in control room is very important in Pressure measurement and control system in industry. In this paper, the design of a noncontact Pressure transducer along with a transmitting unit using bellows as the primary sensing element and a Hall sensor as secondary sensing element has been described. The theoretical equations describing the operation of the proposed transducer and Transmitter have been derived. The function of the transducer and Transmitter has been experimentally tested and the experimental results are reported in the paper. Both transducer and Transmitter characteristics have been found to be linear with good repeatability. The graphical abstract is shown in Fig. 1 . Fig. 1. Graphical abstract.

  • Design and Analysis of Hall Effect Probe-Based Pressure Transmitter Using Bellows as Sensor
    IEEE Transactions on Instrumentation and Measurement, 2015
    Co-Authors: Gurindapalli Rajita, Nirupama Mandal, Deblina Banerjee, Satish Chandra Bera
    Abstract:

    Bellows is an elastic-type Pressure sensor used as a local indicator in industry. Transmission of bellows reading to a remote location in control room is very important in Pressure measurement and control system in industry. In this paper, the design of a noncontact Pressure transducer along with a transmitting unit using bellows as the primary sensing element and a Hall sensor as secondary sensing element has been described. The theoretical equations describing the operation of the proposed transducer and Transmitter have been derived. The function of the transducer and Transmitter has been experimentally tested and the experimental results are reported in the paper. Both transducer and Transmitter characteristics have been found to be linear with good repeatability.