【Live FAQ】Fluke electrical testing and calibration applications in the new energy industry
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Live Topic: Electrical Testing and Calibration Applications in the New Energy Industry
Live Broadcast Introduction:
Introduction to electrical testing applications in the new energy industry;
Introduction to electrical measuring equipment calibration in the new energy industry;
Sharing of electrical measuring equipment calibration solutions and example analysis.
Live lecturer:
Yang Shengli | Chief Electromagnetic Metrologist, Fluke Calibration Department
Member of the National Electromagnetic Metrology Technical Committee, member of the Electronic Metrology Professional Committee of the 7th Council of the China Institute of Metrology and Testing, and member of the Application Working Group of the National Committee on Measurement Uncertainty.
FAQ Details
1. What does the 1/2 position mean?
A: Half digit, which means the first digit of the meter can only be displayed as 0 or 1. For example, a multimeter with three and a half digits can display a maximum of 1999.
2. Does Fluke's testing equipment support storage? Or can it be connected to computer software for real-time monitoring?
A: Many Fluke test instruments are equipped with internal storage and external programmable interfaces. The specific model you choose will prevail.
3. How many types of acquisition modules does the data acquisition system have?
A: Only one type, board-based
4. Does it need to be repaired after a period of time?
A: It needs to be calibrated every year, not inspected.
5. How to maintain instruments and meters
A: Maintain a stable use environment and calibrate regularly
6. Can calibration only be done by sending the equipment to the original manufacturer?
A: It can be sent to the Institute of Metrology for calibration with a qualified third party.
7. Does Fluke have calibration repair and extended warranty service? Thank you
A: Fluke Calibration has extended warranty service for its instruments. For specific models, please contact 400-810-3435.
8. Please contact Fluke Industrial Instruments. Can you give me the contact information? Thank you.
A: 400-810-3435
9. Can the instrument only be calibrated by sending it to the original factory?
A: It can be sent to the Institute of Metrology or a qualified third-party organization for calibration.
10. Can you generate statistical information graphs?
A: You can record data, but you cannot generate statistical charts by yourself.
11. What electrical parameters can 5560A mainly calibrate?
A: Current, voltage, resistance, capacitance, inductance, power, etc.
12. If it is inaccurate, is it a problem with the source or the table?
A: If they are all calibrated equipment, it depends on the uncertainty of the instrument. The higher the level, the more accurate it is.
13. How to achieve long-term monitoring? Do I need to buy special equipment?
A: Connect to a computer and use software to monitor and record data for a long time
14. Do portable instruments, such as multimeters, need to be calibrated?
A: The multimeter also needs to be calibrated, usually once a year.
15. How often should a Fluke current detector be sent for inspection and maintenance?
A: One year
16. How often does a Fluke current detector need to be inspected and maintained?
A: The normal inspection cycle is one year.
17. Does Fluke have a multi-channel temperature measurement instrument?
A: Yes, 1586A
18. Does the equipment management software need to be purchased or is it free?
A: You need to pay for it.
19. Our equipment is regularly inspected and passed. Under this condition, how can I ensure that my test is accurate? (In addition to preheating the machine, determining the appropriate ambient temperature, and using original cables and sensors), especially the point temperature test, the intuitive feeling does not match
A: If the equipment is regularly inspected and passes the inspection, then you should have a certain degree of confidence that the test you are conducting is accurate as long as it is in the right environment and preheated. Of course, it depends on whether the accuracy of your instrument meets the needs of on-site testing. If necessary, you can equip the on-site calibration equipment to verify the test instrument on-site first.
20. How to reduce measurement error?
A: Use higher-level equipment and perform multiple measurements, etc.
21. What does the 1/2 digit mean?
A: 1/2 digit, 1 refers to the first digit, 0 or 1 changes, 2 refers to the first digit of the full scale. If it is a 3 1/2 digit DMM, it means there are 4 digits in total, the first digit is 0 or 1 changes, and the next three digits can all reach 9, and the full scale is 2000
22. Does calibration require special equipment? Is there any equipment that can calibrate itself?
A: Most of them need to be calibrated by external higher-level standards. Self-calibration generally only performs zero-point calibration or zero-drift correction of the instrument.
23. Are effective electromagnetic shielding measures required during the test?
A: Some electromagnetic shielding measures need to be taken, but they are relatively simple, because the design of Fluke instruments has taken into account how to shield against external interference. Most of them have strong electromagnetic compatibility performance and internal and external shielding measures. When connecting small signals or small currents, shielded wires need to be connected. Sometimes there is no problem if they are not connected, and the test will go smoothly.
24. The current block is easily damaged due to misoperation. Is there any better solution for this?
A: Generally, the current range is damaged. One is overcurrent, the other is misoperation, and the connection line is connected incorrectly. Most Fluke multimeters have a wrong connection prompt. Overcurrent requires extra attention to avoid sending large current into the small current range.
25. Can the clamp ammeter be used to measure power?
A: Most clamp ammeters now have other test functions such as voltage, resistance, and even power.
26. Does the calibration manual come with the device?
A: For Fluke instruments, you can go to the official website, search for the model, and then in the Resources and Knowledge area, you can download various manuals, including calibration manuals.
27. Is the instrument calibration provided by the manufacturer free of charge?
A: The original instrument is provided with a calibration certificate when it leaves the factory. If it needs to be calibrated again in the future, it can be calibrated and repaired free of charge if it is not caused by human factors during the warranty period. There will be some fees for recalibration in the future.
28. The "common ground" of measuring instruments is very interesting. If it is not handled properly, the instrument and peripherals will be damaged.
A: Yes, you need to pay special attention, otherwise it will cause measurement errors or equipment damage
29. Are there any relevant manuals available?
A: Go to Fluke's official website at cn.fluke.com or Fluke Calibration's official website at cn.flukecal.com
30. What types of analog signals are there?
A: AC/DC voltage, current, resistance, temperature sensor analog signals such as TC, RTD, etc.
31. What is the range of measurement error?
A: Please refer to the manual for the specific instrument.
32. What is the maximum output current?
A: If you are referring to a multi-product calibrator such as the 5560A, it is 30A, which can be combined with an amplifier to expand to 120A or even larger
33. How much does Fluke charge for calibration?
A: The charges for each instrument vary. Please consult the Fluke repair station.
34. What parameters are generally calibrated for calibration instruments?
A: Specific analysis of specific instruments
35.Does the thermal imager need to be calibrated?
A: Same as required
36. How long is the calibration cycle of an instrument?
A: It is recommended that it should not exceed one year, but it can be shortened considering the actual situation.
37. What are the solutions, instruments and equipment for high voltage power consumption testing?
A: You can consider using a power analyzer from Fluke Industrial Test Instruments. It has a high-voltage probe that can test current, voltage, power, etc., including power consumption.
38. Can the purity of silicon also be tested electrically?
A: This cannot be tested by our equipment. We need to find other chemical analysis instruments.
39. How to consider the calculation of uncertainty when measuring with Fluke instruments? Thank you
A: Good question. When using Fluke instruments for calibration, the uncertainty can be evaluated according to the various regulations given in CNAS or JJF 1059. The test uncertainty and confidence of Fluke equipment are provided in the product manual, which is equivalent to a component of Class B. The multiple readings obtained by measurement are averaged, the standard deviation is calculated, and divided by the square root of n to obtain the Class A component. Other factors that need to be considered include the impact of resolution, etc., which are uniformly distributed as another component of Class B. After synthesis, the standard uncertainty is obtained, and then the expanded uncertainty can be obtained. If Fluke's calibration management software, MET/CAL/TEAM, is used, the measurement uncertainty will be automatically obtained after the measurement and calibration is completed, which is actually completely consistent with the above calculation process.
40. How to calibrate the emissivity of a Fluke thermal imager? Thank you
A: This thermal imaging calibration is not the subject of Fluke Calibration. Please contact Fluke Industrial Instruments and they will provide a calibration solution.
41. I have used my Fluke 287 for more than ten years and it works very well.
A: This is normal. Fluke equipment is durable, accurate and reliable.
42. My Fluke Ti400 driver always has problems. Can you send me a driver? Thank you
A: Contact Fluke Industrial Solutions or visit the official website
43. For application companies, is it better to outsource testing or build their own testing system?
A: Outsourcing inspection or external calibration has its limitations and pain points, and calibration costs may not be much saved. You can consider the size of the calibration volume and the investment in calibration costs, the investment cost of the equipment, and comprehensively consider whether to use external calibration or build your own calibration capabilities, and which model is suitable. The lecture will cover
44. How to choose equipment for calibration?
A: Generally, you need to select appropriate standards to calibrate your equipment in accordance with the requirements of relevant regulations and specifications. The accuracy is generally more than 3 times higher.
45. What parameters can the calibration instrument calibrate?
A: The parameters that can be calibrated in electrical engineering include various electrical parameters from DC to audio or low frequency, such as voltage, resistance, current, inductance, capacitance, power, electric energy, temperature, etc.
46. Can you generate statistical information graphs?
A: Fluke 8.5-digit digital multimeter can directly generate statistical information of measurement results, such as maximum value, minimum value, standard deviation, etc.
47. Can you generate statistical information graphs?
A: You can also generate trend graphs and export the results to CSV files, which can be viewed on a computer.
48. What battery parameters can the BT5300 battery tester measure?
A: AC internal resistance, DC voltage, multi-channel
49. Can electrical calibration in the new energy industry be done online?
A: Online calibration may have many limitations at present, and general calibration is currently performed on-site.
50. How to measure the illuminance meter of photovoltaic power generation?
A: Please check the calibration manual of the specific instrument. For Fluke models, you can go to cn.flukecal.com, find the specific product page to download its calibration manual, and obtain the specific calibration plan.
51. What are the main parameters tested in the new energy field?
A: It depends on the new energy industry. Generally speaking, the new energy field requires a lot of tests, such as battery performance tests, such as OCV open circuit voltage, battery capacity, AC impedance, etc., as well as grounding environment, equipment insulation capacity, power supply environment, inverter efficiency, AC output performance, etc. There are also many on-site ambient temperatures, battery temperatures, component material temperatures, etc. that also require a lot of testing.
52. How often should calibration be performed?
A: It is recommended that the period should not exceed one year. It can be shortened according to actual needs.
53. What indicators are tested for lithium batteries?
A: OCV open circuit voltage, battery capacity, insulation performance, etc.
54. In what applications are photovoltaic cells used?
A: Photovoltaic power plants, street lights, residential buildings and other occasions
55. Can the clamp meter only measure AC?
A: It depends on the type of clamp meter. Electromagnetic induction clamp meters can only measure AC. Hall effect and flexible current clamp meters can measure both AC and DC.
56. How to test the internal resistance of the battery?
A: You need to buy a battery internal resistance tester. Go to Fluke's official website at cn.fluke.com
57. What does electrical testing include?
A: Electrical testing generally refers to the measurement and testing of various electrical quantities from DC to audio or low frequency (below 10MHz), including voltage, resistance, current, inductance, capacitance, power, electric energy and other main parameters.
58. Does instrument calibration require a nationally recognized calibration agency?
A: Instrument calibration must be carried out by a nationally recognized calibration agency with the corresponding calibration qualifications.
59. How to ensure random errors and error accumulation in testing
A: Because the test equipment you use has random readings, random errors are bound to exist. The impact of random errors can be reduced by multiple measurements. Error accumulation needs to be reduced by regularly adjusting the equipment to restore it to optimal performance.
60. How is instrument calibration mainly achieved? Is it the same as measurement and inspection calibration?
A: You may mean how to calibrate the instrument, that is, adjust it to the best state. If this is the meaning, this adjustment generally needs to follow the adjustment steps of the equipment manufacturer, use standard equipment similar to metrological calibration, adjust the various functions and ranges of the equipment to restore it to the best state and performance. Conventional metrological calibration actually refers to verification, testing whether its performance meets the nominal indicators. Verification needs to follow the requirements of national calibration specifications and verification procedures, and refer to the manufacturer's indicators.
61. Can it be used directly on the assembly line? How is efficiency and accuracy guaranteed?
A: I'm not sure which device you are referring to, but some of them can be used on running money.
62. What are the requirements for the environment during use?
A: Refer to the specific instrument manual
63. Is there any calibrator that can calibrate commonly used instruments at the same time?
A: The 5560A and other devices introduced today can calibrate multiple devices at the same time
64. How often does a Fluke current detector need to be sent for inspection and maintenance?
A: Generally, the inspection takes one year, and there are two-year indicators for all products.
65. How often does it take for a Fluke current detector to be inspected and maintained?
A: Some products
66. Does Fluke Instruments support self-maintenance by users? What certifications are required?
A: Fluke equipment requires high-level standard instruments for maintenance. If you have these equipment and corresponding calibration qualifications, you can carry out internal calibration coverage after passing the assessment.
67. How to evaluate the performance of electrical measuring equipment? What are the commonly used indicators?
A: This requires specific analysis with specific instruments.
68. What are the common test items for lithium battery testing?
A: OCV open circuit voltage, capacity, insulation performance, etc.
69. What is the role of uncertainty in the calibration of electrical measuring equipment?
A: Uncertainty describes the dispersion of your measurement results, because your measurement results are random and uncertain. Uncertainty can reflect the credibility range of the results, including whether the measurement equipment used meets the requirements, etc.
70. How are the voltage and current meters produced by the company calibrated before leaving the factory? Are there any relevant documents?
A: Go to Fluke's official website at cn.fluke.com or the calibration department's official website at cn.flukecal.com, search for specific products, and download the calibration manual or user manual.
71. How long is the calibration cycle of an instrument?
A: Go to Fluke's official website at cn.fluke.com or the calibration department's official website at cn.flukecal.com, search for specific products, and download the calibration manual or user manual.
72. If there is no error in the use of the instrument, does it still need to be calibrated on time?
A: It needs to be calibrated regularly. No error only means that the instrument performance is relatively reliable and the error is small. But it still needs to be calibrated.
73. What is the accuracy of a clamp meter?
A: Generally 2%~3%
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