CN109839178A - A kind of current vortex sensor method of calibration - Google Patents
A kind of current vortex sensor method of calibration Download PDFInfo
- Publication number
- CN109839178A CN109839178A CN201711193544.4A CN201711193544A CN109839178A CN 109839178 A CN109839178 A CN 109839178A CN 201711193544 A CN201711193544 A CN 201711193544A CN 109839178 A CN109839178 A CN 109839178A
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- adjustment
- gauge outfit
- calibration
- vortex sensor
- current vortex
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Abstract
A kind of current vortex sensor method of calibration of the invention, for the vibration monitoring and protection system to large rotating machinery device；The present invention improves the reliability and stability of equipment detection by the verification standard operation step to current vortex sensor.
Description
Technical field
The present invention relates to the vibration monitoring fields of mechanical equipment, and in particular to the vibration monitoring of large rotating machinery device
With protection system, especially axial displacement/swollen poor monitoring device method of calibration.
Background technique
Vibration monitoring is that device is or not various large rotating machineries (such as steam turbine, blower, compressor, motor, pump, gear-box)
The monitoring that can lack, protection equipment.It and vibrating speed sensors cooperate, and can carry out absolute vibration to rotation mechanism bearing shell
Continuous monitoring and measuring.Have and is exported with the directly proportional electric current of measured value, can be with DCS, PLC system, recording instrument without paper is direct
Connection.When vibration amplitude transfinites, the output of alarm relay switching value contact can be automatically provided.
Existing vibration monitoring equipment has high reliablity, and performance is stablized, and the range of linearity is big, frequency response is wide, accuracy is high, warm
It is good to spend characteristic；The features such as strong antijamming capability.It can be widely used in the enterprises such as electric power, machinery, chemical industry, metallurgy, be suitble to medium and small
The monitoring system of type rotation mechanism designs.
It is existing to measurement steam turbine, blower, the various large rotating machinery device axial displacements such as compressor/swollen difference when, it is main
Current vortex sensor has been used, non-connect is carried out to the big axis of the rotating machineries such as steam turbine, blower, compressor using eddy current principle
Touch is continuously monitored, is measured.It can be coupled with various DCS, PLC system.When shift value transfinites, alarm can be automatically provided and shut down
The output of protective switch amount contact.
And user to after new purchase, maintenance, the instrument of more emat sensor is before use or the instrument that is used for a long time all should be into
Row calibration, to ensure the accuracy detected.
Summary of the invention
The object of the present invention is to provide a kind of current vortex sensor methods of calibration, solve above-mentioned deficiency.
In order to achieve the above object, the present invention provides a kind of current vortex sensor methods of calibration:
(1) it will test equipment shifting to be filled on current vortex sensor calibration frame；
(2) connecting line is connected as required, after checking that wiring is correct, connects instrument power；
(3) adjustment debugging frame examination disk and probe positions, make instrument show " 0.00 " mm；
(4) gauge outfit shows datum mark adjustment: keeping off the 1 foot voltage of measurement U3 with multimeter DC2V, potentiometer 1 is adjusted to make voltage
1.20V；
(5) 4mA is adjusted: adjustment debugging frame allows examination disk close to probe, that is, shifts to negative full scale position, adjusts potentiometer 2, makes output electricity
Flow 4mA.
(6) 20 mA adjustment: adjustment debugging frame allows examination disk far from probe, that is, shifts to positive full scale position, adjusts potentiometer 3, makes
Electric current output is 20 mA.
(7) gauge outfit shows full scale adjustment: when electric current exports 20 mA, adjusting potentiometer 4, gauge outfit is made to show 1.50mm；Then
Change examination disk and probe positions, making electric current output is 4 mA, and gauge outfit should show -1.50mm at this time.
Preferably, in above-mentioned (7), due to the non-linear effects of sensor, gauge outfit, which is shown, has error, should be according to practical feelings
Condition considers the allowed band of error.
A kind of current vortex sensor method of calibration of the invention, for large rotating machinery device vibration monitoring and guarantor
Protecting system；The present invention is connected by the explosion-proof installation to velocity sensor, and equipment is made to meet the use demand of explosion-proof occasion.
Detailed description of the invention
Fig. 1 is verification general illustration of the invention；
In figure: 1, current vortex sensor calibration frame；2, try disk；3, sensor；4, connecting cable；5, fore-lying device.
Specific embodiment
Present invention is mainly used for the vibration monitorings and protection system to large rotating machinery device, provide a kind of current vortex
Sensor calibration method, as shown in Figure 1, connection schematic diagram as of the invention, specific steps are as follows:
(1) it will test equipment shifting to be filled on current vortex sensor calibration frame 1, the alignment probe of sensor 3 tries disk 2；
(2) connecting cable 4 between connecting line, especially sensor 3 and fore-lying device 5, length, the class of the cable are connected as required
Type must not be changed arbitrarily, to prevent detection data distortion；After checking that wiring is correct, instrument power is connected；
(3) adjustment debugging frame examination disk 2 and probe positions, make instrument show " 0.00 " mm；
(4) gauge outfit shows datum mark adjustment: keeping off the 1 foot voltage of measurement U3 with multimeter DC2V, potentiometer 1 is adjusted to make voltage
1.20V；
(5) 4mA is adjusted: adjustment debugging frame allows examination disk 2 close to probe, that is, shifts to negative full scale position, adjusts potentiometer 2, makes to export
Electric current 4mA.
(6) 20 mA adjustment: adjustment debugging frame allows examination disk 2 far from probe, that is, shifts to positive full scale position, adjusts potentiometer 3,
Making electric current output is 20 mA.
(7) gauge outfit shows full scale adjustment: when electric current exports 20 mA, adjusting potentiometer 4, gauge outfit is made to show 1.50mm；Then
Change examination disk and probe positions, making electric current output is 4 mA, and gauge outfit should show -1.50mm at this time.
Due to the non-linear effects of sensor, gauge outfit, which is shown, has error, should consider the permission of error according to the actual situation
Range.
Basic principles and main features and advantage of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (2)
1. a kind of current vortex sensor method of calibration, which comprises the steps of:
(1) it will test equipment shifting to be filled on current vortex sensor calibration frame；
(2) connecting line is connected as required, after checking that wiring is correct, connects instrument power；
(3) adjustment debugging frame examination disk and probe positions, make instrument show " 0.00 " mm；
(4) gauge outfit shows datum mark adjustment: keeping off the 1 foot voltage of measurement U3 with multimeter DC2V, potentiometer 1 is adjusted to make voltage
1.20V；
(5) 4mA is adjusted: adjustment debugging frame allows examination disk close to probe, that is, shifts to negative full scale position, adjusts potentiometer 2, makes output electricity
Flow 4mA.
(6) 20 mA adjustment: adjustment debugging frame allows examination disk far from probe, that is, shifts to positive full scale position, adjusts potentiometer 3, makes electric current
Output is 20 mA.
(7) gauge outfit shows full scale adjustment: when electric current exports 20 mA, adjusting potentiometer 4, gauge outfit is made to show 1.50mm；Then change
Disk and probe positions are tried, making electric current output is 4 mA, and gauge outfit should show -1.50mm at this time.
2. a kind of current vortex sensor method of calibration according to claim 1, which is characterized in that in above-mentioned (7), due to passing
The non-linear effects of sensor, gauge outfit, which is shown, has error, should consider the allowed band of error according to the actual situation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193544.4A CN109839178A (en) | 2017-11-24 | 2017-11-24 | A kind of current vortex sensor method of calibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193544.4A CN109839178A (en) | 2017-11-24 | 2017-11-24 | A kind of current vortex sensor method of calibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109839178A true CN109839178A (en) | 2019-06-04 |
Family
ID=66877428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711193544.4A Pending CN109839178A (en) | 2017-11-24 | 2017-11-24 | A kind of current vortex sensor method of calibration |
Country Status (1)
| Country | Link |
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| CN (1) | CN109839178A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074769A (en) * | 2021-03-30 | 2021-07-06 | 宁夏计量质量检验检测研究院 | Control system for detecting dynamic and static indexes of eddy current sensor |
-
2017
- 2017-11-24 CN CN201711193544.4A patent/CN109839178A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074769A (en) * | 2021-03-30 | 2021-07-06 | 宁夏计量质量检验检测研究院 | Control system for detecting dynamic and static indexes of eddy current sensor |
| CN113074769B (en) * | 2021-03-30 | 2022-05-03 | 宁夏计量质量检验检测研究院 | Control system for detecting dynamic and static indexes of eddy current sensor |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190604 |
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| WD01 | Invention patent application deemed withdrawn after publication |