CN107782468A - A kind of electromagnetic heat meters - Google Patents
A kind of electromagnetic heat meters Download PDFInfo
- Publication number
- CN107782468A CN107782468A CN201610781837.3A CN201610781837A CN107782468A CN 107782468 A CN107782468 A CN 107782468A CN 201610781837 A CN201610781837 A CN 201610781837A CN 107782468 A CN107782468 A CN 107782468A
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- Prior art keywords
- module
- excitation
- electromagnetic heat
- heat meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
- G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The present invention provides a kind of electromagnetic heat meters, including communication module, button and LCD MODULE, radio frequency card module, excitation module, amplifier filtration module, power module, electronic counting module, out temperature sensor and CPU module；The CPU module respectively with the communication module, button and LCD MODULE, radio frequency card module, amplifier filtration module connects with the power module, the amplifier filtration module respectively with the electronic counting module, out temperature sensor connects, the present invention is simple in construction, it is reasonable in design, it is provided with equipotential excitation shielded signal output voltage, to reduce influence of the distribution capacity of cable transmission to flow signal measurement, when tested electrical conductivity is less than 50 μ S/cm or transmitted over long distances, the twin-core dual shield signal cable with equivalent potential screen can be used, band excitation warning function, can be easy to use, metering is accurate, observation is directly perceived.
Description
Technical field
The invention belongs to electromagnetic heat meters technical field, more particularly to a kind of electromagnetic heat meters.
Background technology
When hotlist converter supports the use with electromagnet flow meter sensor, to detected fluid electrical conductivity more than 50 μ S/cm's
Situation, flow signal transmission cable can use model RVVPB2*0.12*280mm 2 pvc sheath wire mesh
Cover signal cable.It should be not more than 100m using length.Signal wire with sensor is supporting dispatches from the factory.This hotlist is provided with equipotential excitation
Shielded signal output voltage, to reduce influence of the distribution capacity of cable transmission to flow signal measurement.When tested electrical conductivity is small
When 50 μ S/cm or transmission over long distances, the twin-core dual shield signal cable with equivalent potential screen can be used.Such as
STT3200 private cables or BTS type triple-shielded signal cables.
The content of the invention
For above-mentioned technical problem, the present invention provides a kind of electromagnetic heat meters.
A kind of electromagnetic heat meters, including communication module, button and LCD MODULE, radio frequency card module, excitation module,
Amplifier filtration module, power module, electronic counting module, out temperature sensor and CPU module；In described
Central processor module respectively with the communication module, button and LCD MODULE, radio frequency card module, amplifier filtration module and
The power module connection, the amplifier filtration module connect with the electronic counting module, out temperature sensor respectively
Connect, electromagnetic heat meters provide two kinds of excitation frequency selections：That is 1/10 power frequency (mode 1), 1/12 power frequency (mode 2), it is small-bore
Sensor excitation system inductance value it is small, 1/10 power frequency should be selected, bigbore sensor excitation system inductance value is big, Yong Huying
1/12 power frequency is selected, in use, first selecting excitation mode 1, if instrument flow velocity zero point is too high, then selects mode 2 successively.
Hotlist frame ground terminal, which should use, is not less than 1.6mm2Grounded copper wire connects the earth, connecing from hotlist housing to the earth
Ground resistance should be less than 1 Ω.
During the communication module data communication, the address of this table, optional scope：01~No. 99 address, No. 0 address are protected
Stay.
The communication module RS485 interfaces and HART interfaces, Modbus agreements and standard HART protocol are supported, configure HART
Hander, can Real time displaying measured value, and meter parameter can be changed.
The exciting current line of the excitation module can use two core insulation rubber flexible cables, the length of exciting current line with
Signal cable length is consistent, and when using STT3200 private cables, excitation cable merges into one with signal cable.
Compared with prior art, the present invention has the advantages that：The present invention is simple in construction, reasonable in design, there is provided to have
Equipotential encourages shielded signal output voltage, to reduce influence of the distribution capacity of cable transmission to flow signal measurement.Work as quilt
When surveying electrical conductivity less than 50 μ S/cm or long range transmission, the twin-core dual shield signal cable with equivalent potential screen can be used,
Band excitation warning function, can be easy to use, and metering is accurate, and observation is directly perceived.
Brief description of the drawings
Fig. 1 is the terminals subgraph of the present invention.
Fig. 2 is that the outer power supply source of the present invention connects electronic counter figure.
Fig. 3 is that power supply source connects electronic counter figure in the present invention.
Fig. 4 is OC doors connected mode figure in table of the present invention.
Fig. 5 is keyboard definition of the present invention and liquid crystal diagram.
Fig. 6 is digital quantity level output map interlinking of the present invention.
Fig. 7 is that digital output of the present invention connects photoelectrical coupler figure.
Fig. 8 is digital output contact relay figure of the present invention.
Embodiment
The present invention is described further below in conjunction with accompanying drawing：
In figure：
Embodiment：
As shown in accompanying drawing 1 to accompanying drawing 7
The present invention provides a kind of electromagnetic heat meters, including including communication module, button and LCD MODULE, radio-frequency card
Module, excitation module, amplifier filtration module, power module, electronic counting module, out temperature sensor and central processing
Device module；CPU module filters with communication module, button and LCD MODULE, radio frequency card module, amplifier respectively
Module is connected with power module, and amplifier filtration module is connected with electronic counting module, out temperature sensor respectively, electromagnetism
Formula heat energy meter provides two kinds of excitation frequency selections：That is 1/10 power frequency mode 1,1/12 power frequency mode 2.Small-bore sensor excitation
System inductance amount is small, should select 1/10 power frequency.Bigbore sensor excitation system inductance value is big, and user should select 1/12 work
Frequently.In use, first selecting excitation mode 1, if instrument flow velocity zero point is too high, then selects mode 2 successively, hotlist frame ground terminal should be adopted
With not less than 1.6mm2Grounded copper wire connects the earth, and the grounding resistance from hotlist housing to the earth should be less than 1 Ω, and communication module 1 counts
During according to communication, the address of this table, optional scope：01~No. 99 address, No. 0 address retain, communication module 1RS485 interfaces
With HART interfaces, support Modbus agreements and standard HART protocol, configure HART handers, can Real time displaying measured value, and can
Meter parameter is changed, the exciting current line of excitation module 4 can use two core insulation rubber flexible cables, the length of exciting current line
Consistent with signal cable length, when using STT3200 private cables, excitation cable merges into one with signal cable.
Operation principle
The present invention is achieved like this, and the present invention is simple in construction, and electromagnetic heat meters provide two kinds of excitation frequency selections：
That is 1/10 power frequency (mode 1), 1/12 power frequency (mode 2), small-bore sensor excitation system inductance value is small, should select 1/10 work
Frequently, bigbore sensor excitation system inductance value is big, and user should select 1/12 power frequency, in use, excitation mode 1 is first selected, if
Instrument flow velocity zero point is too high, then selects mode 2 successively, there is provided has equipotential to encourage shielded signal output voltage, to reduce cable biography
Influence of the defeated distribution capacity to flow signal measurement.When tested electrical conductivity is less than 50 μ S/cm or transmitted over long distances, can be used
Twin-core dual shield signal cable with equivalent potential screen, band excitation warning function, can be easy to use, and metering is accurate, observation
Intuitively.
Using technical solutions according to the invention, or those skilled in the art is under the inspiration of technical solution of the present invention,
Similar technical scheme is designed, and reaches above-mentioned technique effect, is to fall into protection scope of the present invention.
Claims (5)
1. a kind of electromagnetic heat meters, it is characterised in that the electromagnetic heat meters include communication module, button and liquid crystal display mode
Block, radio frequency card module, excitation module, amplifier filtration module, power module, electronic counting module, out temperature sensor
And CPU module；The CPU module respectively with the communication module, button and LCD MODULE, radio frequency
Card module, amplifier filtration module connect with the power module, the amplifier filtration module respectively with the electronic counting
Module, the connection of out temperature sensor, electromagnetic heat meters provide two kinds of excitation frequency selections：I.e. 1/10 power frequency (mode 1),
1/12 power frequency (mode 2), small-bore sensor excitation system inductance value is small, should select 1/10 power frequency, bigbore sensor
Excitation system inductance value is big, and user should select 1/12 power frequency, in use, excitation mode 1 is first selected, if instrument flow velocity zero point is too high,
Select mode 2 successively again.
2. electromagnetic heat meters as claimed in claim 1, it is characterised in that hotlist frame ground terminal, which should use, to be not less than
1.6mm2Grounded copper wire connects the earth, and the grounding resistance from hotlist housing to the earth should be less than 1 Ω.
3. electromagnetic heat meters as claimed in claim 1, it is characterised in that during the communication module data communication, this table
Address, optional scope：01~No. 99 address, No. 0 address retain.
4. electromagnetic heat meters as claimed in claim 1, it is characterised in that the communication module RS485 interfaces and HART connect
Mouthful, support Modbus agreements and standard HART protocol, configure HART handers, can Real time displaying measured value, and instrument can be changed
Parameter.
5. electromagnetic heat meters as claimed in claim 1, it is characterised in that the exciting current line of the excitation module can use
Two core insulation rubber flexible cables, the length of exciting current line is consistent with signal cable length, when use STT3200 private cables
When, excitation cable merges into one with signal cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610781837.3A CN107782468A (en) | 2016-08-30 | 2016-08-30 | A kind of electromagnetic heat meters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610781837.3A CN107782468A (en) | 2016-08-30 | 2016-08-30 | A kind of electromagnetic heat meters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107782468A true CN107782468A (en) | 2018-03-09 |
Family
ID=61450201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610781837.3A Pending CN107782468A (en) | 2016-08-30 | 2016-08-30 | A kind of electromagnetic heat meters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107782468A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112449677A (en) * | 2018-11-20 | 2021-03-05 | Abb瑞士股份有限公司 | Device for monitoring the temperature and voltage of a cable joint of a cable connected to a gas-insulated switchgear and associated manufacturing method |
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2016
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| CN101158606A (en) * | 2007-11-16 | 2008-04-09 | 扬州大学 | Heating system temperature differential measuring apparatus |
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| CN103728585A (en) * | 2013-10-30 | 2014-04-16 | 国家电网公司 | Device and method for testing noise immunity of power frequency magnetic field of electric energy meter |
| CN103759862A (en) * | 2014-01-07 | 2014-04-30 | 安徽润尔兴仪表有限公司 | Distributed electromagnet cooling and heating capacity metering system and method |
| CN204043732U (en) * | 2014-07-04 | 2014-12-24 | 燕山大学 | A kind of dual frequency electromagnetic flowmeter driving circuit |
| CN204924500U (en) * | 2015-09-25 | 2015-12-30 | 广东艾科技术股份有限公司 | Integral type electromagnetism calorimeter |
| CN205333226U (en) * | 2015-12-30 | 2016-06-22 | 南京宇能新能源科技有限公司 | Intelligence teletransmission calorimeter based on communication of plastics optical fiber sensing |
| CN105757781A (en) * | 2016-03-08 | 2016-07-13 | 成都众山科技有限公司 | Water-saving type metering device |
| CN205402916U (en) * | 2016-03-08 | 2016-07-27 | 成都众山科技有限公司 | Water -saving measurement hotlist of remote monitoring can carry out |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112449677A (en) * | 2018-11-20 | 2021-03-05 | Abb瑞士股份有限公司 | Device for monitoring the temperature and voltage of a cable joint of a cable connected to a gas-insulated switchgear and associated manufacturing method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180309 |
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| RJ01 | Rejection of invention patent application after publication |