CN207717160U - A kind of electromagnetic flowmeter - Google Patents
A kind of electromagnetic flowmeter Download PDFInfo
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- CN207717160U CN207717160U CN201721883720.2U CN201721883720U CN207717160U CN 207717160 U CN207717160 U CN 207717160U CN 201721883720 U CN201721883720 U CN 201721883720U CN 207717160 U CN207717160 U CN 207717160U
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- electromagnetic flowmeter
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Abstract
The utility model provides a kind of electromagnetic flowmeter, characterized in that including shell, display screen, converter and sensor, the sensor includes magnet exciting coil, electrode and liner, and the sensor is mounted in the shell；The converter includes field circuit, A/D conversions, pre-amplification circuit, filter circuit, communication interface, Switching Power Supply and CPU；The sensor is connect by cable with the sensor interface on the converter；The converter setting on the housing, is provided with display screen and keyboard on the converter.The utility model is simple in structure, is not influenced by fluid density, viscosity, temperature, pressure and electric rate variation, without choked flow piece in shell, crushing is small.Converter excitation mode improves the stability of flow measurement, and power attenuation is small, and CPU arithmetic speeds are fast, strong antijamming capability, measures reliable, accuracy height.It is provided with anti-explosion cable, enhances explosion-proof performance.
Description
Technical field
The utility model is related to a kind of instrument and meter, specifically a kind of electromagnetic flowmeter.
Background technology
With the continuous improvement of industrial automation level, in industrial processes, need to fluid in various pipes
Flow, flow velocity accurately measure and control, meanwhile, further to carry out the work of the items such as energy saving, emission reduction, consumption reduction, environmental protection, flow
The importance of measurement, which also seems, to become increasingly conspicuous.
Existing flowrate measuring tool is low in the prevalence of reliability, and stability is poor, and corrosion resistance is weak, and measurement accuracy is not high
Problem, the volume of conducting liquid and slurries (such as sewage, paper pulp, various acid, alkali, salting liquid) especially in measuring closed conduct
In flow, the defect in structure design is more obvious.
Utility model content
The purpose of this utility model is to provide a kind of electromagnetic flowmeter, with solve existing flowmeter reliability it is low, intolerant to
The problem of corrosion.
The utility model is realized in this way：A kind of electromagnetic flowmeter, wherein including shell, display screen, converter and biography
Sensor, the sensor include magnet exciting coil, electrode and liner, and the sensor is mounted in the shell；The converter
Including field circuit, A/D conversions, pre-amplification circuit, filter circuit, communication interface, Switching Power Supply and CPU；The sensor
It is connect with the sensor interface on the converter by cable；The converter is arranged on the housing, in the conversion
Display screen and keyboard are provided on device.
Preferably, the excitation mode of the converter is using programmable frequency low-frequency rectangular wave excitation.
Preferably, the communication interface is RS485 or RS232 communication interfaces.
Preferably, it is provided at both ends with ring flange in the shell.
Preferably, the cable is the anti-explosion cable covered with double layer screen.
Preferably, the CPU is 32 embedded microprocessors.
Using above-mentioned technical proposal, the utility model is simple in structure, not by fluid density, viscosity, temperature, pressure and electric rate
The influence of variation, shell is interior without choked flow piece, and crushing is small.Converter excitation mode improves the stability of flow measurement, power damage
Consume small, CPU arithmetic speeds are fast, strong antijamming capability, measure reliable, and accuracy is high.It is provided with anti-explosion cable, enhances explosion-proof
Energy.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the converter schematic diagram of the utility model.
In figure：1-shell, 2-display screens, 3-converters, 4-ring flanges.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only the section Example of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1 and Figure 2, the utility model provides a kind of electromagnetic flowmeter, including shell 1, and shell 1 is straight-through
Pipe, is provided with sensor, sensor includes magnet exciting coil, electrode and liner in shell 1.It is provided on the top of shell 1
Converter 3, converter 3 include field circuit, A/D conversions, pre-amplification circuit, filter circuit, communication interface, Switching Power Supply,
And CPU etc., display screen 2 and keyboard are additionally provided on converter 3.Sensor passes through the sensor interface on cable and converter
Connection.Shell is provided at both ends with ring flange 4.
On the one hand converter provides stable exciting current to sensor excitation coil, be a constant to reach B, simultaneously
The amplification of the electromotive force of sensor sensing be converted into the current signal or frequency signal of standard, be convenient for the display of flow, control with
It adjusts.
The excitation mode of the converter of the utility model is using programmable frequency low-frequency rectangular wave excitation.Low-frequency square-wave is encouraged
Magnetic energy avoids the orthogonal electromagnetic interference of alternating current magnetic field, eliminates the Hz noise caused by distribution capacity, inhibits alternating current magnetic field in pipe
Current vortex caused by wall and internal fluid excludes the polarization phenomena of DC excitation.
Communication interface is RS485 or RS232 communication interfaces.
The utility model is divided into one-piece type and two kinds of structure types of divergence type, wherein one-piece type sensor and converter by
Cable connection, for the sensor of divergence type with converter by being connect with the anti-explosion cable that double layer screen covers, double layer screen set is anti-
Interference, the effect of shielding is good, is not easy to be disturbed, and bending repeatedly is not easy to be destroyed, stable signal transmission, has reliable explosion-proof
Performance.
CPU is 32 embedded microprocessors.Arithmetic speed is fast, strong antijamming capability, measures reliable, accuracy height.
The electrode form of sensor can be divided into standard type, scrape type, detachable type, electrode with ground.Electrode and ground connection electricity
Pole material has stainless steel containing molybdenum, and Hastelloy B, Hastelloy C alloys, titanium, tantalum, platinum one are according in alloy, 7 kinds of stainless steel coated with tungsten carbide
It is one or more.
Claims (6)
1. a kind of electromagnetic flowmeter, characterized in that including shell, display screen, converter and sensor, the sensor includes encouraging
Magnetic coil, electrode and liner, the sensor are mounted in the shell；The converter include field circuit, A/D conversion,
Pre-amplification circuit, filter circuit, communication interface, Switching Power Supply and CPU；The sensor passes through cable and the converter
On sensor interface connection；The converter setting on the housing, is provided with display screen and key on the converter
Disk.
2. a kind of electromagnetic flowmeter according to claim 1, characterized in that the excitation mode of the converter can to use
Program frequency low-frequency rectangular wave excitation.
3. a kind of electromagnetic flowmeter according to claim 1, characterized in that the communication interface is logical for RS485 or RS232
Communication interface.
4. a kind of electromagnetic flowmeter according to claim 1, characterized in that be provided at both ends with flange in the shell
Disk.
5. a kind of electromagnetic flowmeter according to claim 1, characterized in that the cable is to prevent with what double layer screen covered
Quick-fried cable.
6. a kind of electromagnetic flowmeter according to claim 1, characterized in that the CPU is 32 embedded microprocessors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721883720.2U CN207717160U (en) | 2017-12-28 | 2017-12-28 | A kind of electromagnetic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721883720.2U CN207717160U (en) | 2017-12-28 | 2017-12-28 | A kind of electromagnetic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207717160U true CN207717160U (en) | 2018-08-10 |
Family
ID=63050899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721883720.2U Active CN207717160U (en) | 2017-12-28 | 2017-12-28 | A kind of electromagnetic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207717160U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235062A (en) * | 2021-11-24 | 2022-03-25 | 无锡欧百仪表科技有限公司 | Shockproof durable electromagnetic flowmeter |
-
2017
- 2017-12-28 CN CN201721883720.2U patent/CN207717160U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235062A (en) * | 2021-11-24 | 2022-03-25 | 无锡欧百仪表科技有限公司 | Shockproof durable electromagnetic flowmeter |
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