Unlock instant, AI-driven research and patent intelligence for your innovation.

Flow sensor, mass flow transmission measurement and control device and method for suppressing temperature drift

A flow sensor, mass flow technology, applied in the direction of mass flow measurement device, measurement flow/mass flow, indirect mass flowmeter, etc., can solve the problems of temperature drift, measurement unit error, etc. effect of influence

Active Publication Date: 2019-07-19
BEIJING SEVENSTAR FLOW CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual operation, it is difficult to make the symmetry of the sensor into an ideal and completely symmetrical state, which causes a certain error to the measurement unit, resulting in temperature drift

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flow sensor, mass flow transmission measurement and control device and method for suppressing temperature drift
  • Flow sensor, mass flow transmission measurement and control device and method for suppressing temperature drift
  • Flow sensor, mass flow transmission measurement and control device and method for suppressing temperature drift

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] In order to make the content of the present invention clearer and easier to understand, the content of the present invention will be further described below in conjunction with the accompanying drawings. Of course, the present invention is not limited to this specific embodiment, and general replacements known to those skilled in the art are also covered within the protection scope of the present invention.

[0031] figure 2 Shown is a schematic diagram of a flow sensor of a mass flow delivery measurement and control device according to an embodiment of the present invention. Such as figure 2 As shown, the flow sensor consists of a Wheatstone bridge with thermistors Rd and Ru, and two fixed resistors R1 and R2. Thermistors Ru and Rd are wound on the gas pipeline. When the gas flow in the pipeline changes, the temperature of the two thermistors will change, and then the resistance of the two thermistors will change, causing the output voltage of the Wheatstone bridge...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a flow transducer. The transducer comprises a Wheatstone bridge, a first digital potentiometer, a second digital potentiometer and a third digital potentiometer. The bridge comprises a first thermistor, a second thermistor, a first fixed resistor and a second fixed resistor; the first digital potentiometer is connected between the first fixed resistor and the second fixed resistor in series; the second digital potentiometer is connected with the first thermistor in parallel; the third digital potentiometer is connected with the second thermistor in parallel. The invention further discloses a mass flow transmission, measurement and control device with the flow transducer and a temperature excursion restraining method of the mass flow transmission, measurement and control device. The method is capable of significantly improving the temperature drift.

Description

technical field [0001] The invention relates to the technical field of flow measurement, in particular to a mass flow transmission measurement and control device and a temperature drift suppression method thereof. Background technique [0002] As the application range of mass flow transmission measurement and control devices becomes wider and wider, the requirements for various indicators of mass flow transmission measurement and control devices have also increased. Generally speaking, the mass flow transmission measurement and control device consists of four parts: a flow divider, a flow sensor, a circuit board and a regulating valve. The measuring part of the flow divider, the flow sensor and the circuit board constitute the flow measurement unit of the mass flow transmission measurement and control device; the regulating valve and the control part of the circuit board constitute the control unit of the mass flow transmission measurement and control device. [0003] The f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/69G01F1/699G01F1/86G01F15/02
CPCG01F1/69G01F1/699G01F1/86G01F15/022
Inventor 吴薇牟昌华王瑞
Owner BEIJING SEVENSTAR FLOW CO LTD