JPH0174524U

JPH0174524U -

Info

Publication number: JPH0174524U
Application number: JP1987169818U
Authority: JP
Priority date: 1987-11-06
Filing date: 1987-11-06
Publication date: 1989-05-19

Description

[Brief explanation of the drawing]

第１図は本考案の質量流量計指示器の具体的実
施例を示すブロツク図、第２図は第１図の動作の
説明に供する信号波形図、第３図は従来の質量流
量計指示器の概要を説明するための図、第４図は
従来の質量流量計指示器の一部断面を示す図であ
る。１……質量流量発信器（発信器）、２……回転
体（インペラ）、４……タービン、５……制止ス
プリング、７，７０……質量流量計指示器、８ａ
……分圧回路、９……マグネシン発生部。 Figure 1 is a block diagram showing a specific embodiment of the mass flow meter indicator of the present invention, Figure 2 is a signal waveform diagram for explaining the operation of Figure 1, and Figure 3 is a conventional mass flow meter indicator. FIG. 4 is a partial cross-sectional view of a conventional mass flow meter indicator. 1... Mass flow transmitter (transmitter), 2... Rotating body (impeller), 4... Turbine, 5... Stopping spring, 7, 70... Mass flow meter indicator, 8a
...Voltage dividing circuit, 9... Magnesine generating section.

Claims

[Claims for Utility Model Registration] The mass flow meter is connected to a mass flowmeter transmitter comprising a detection unit having a turbine and a transmitting magnetine for detecting the mass flow rate of the measured fluid given by the torque based on the rotation of a rotating body. An instruction is given by inputting a transmitting magnesin signal from the transmitting magnesin, which is a combination of the fundamental frequency output from the meter oscillator and a second harmonic, which is an angular signal that changes with respect to the fundamental frequency depending on the position of the turbine. A mass flow meter indicator that indicates a mass flow rate in a section includes a means for generating a reference signal of a fundamental frequency, and a means for extracting a DC angle signal with a time delay based on the transmitted magnesine signal and the reference signal. means for inputting the reference signal to generate a fundamental second harmonic; multiplying the fundamental second harmonic by the time-delayed DC angle signal to generate a time-delayed second harmonic; A plurality of magnesine signals, comprising means for generating an angle signal, and means for adding a second harmonic angle signal with a time delay from the means and the reference signal to generate a magnesine signal with a time delay. a generating section; an instruction section that issues a mass flow rate instruction based on each magnesin signal from the magnesin signal generating section;
A mass flow meter indicator comprising: