Intelligent SF6 density relay calibration instrument
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The reliable operation of SF6 switches, which are widely used in power systems, has become one of the most concerned issues for power supply and consumption departments. SF6 gas density relay is an important component used to monitor the changes in SF6 gas density in the SF6 switch body during operation, and its performance directly affects the safety of SF6 switch operation. The SF6 gas density relay operating on site often experiences inflexibility and poor contact of contacts after a period of time due to infrequent operation. Some density relays may also have poor temperature compensation performance, which can lead to misoperation of SF6 density relays when the ambient temperature suddenly changes. Therefore, DL/T596-2021 "Preventive Testing Regulations for Power Equipment" stipulates that each SF6 switch user unit should regularly verify the SF6 gas density relay. From the actual operating situation, it is also necessary to regularly calibrate SF6 density relays and pressure gauges during on-site operation.
The pressure of gas enclosed in a container varies with temperature. In order to have a unified standard for comparison, we usually use the relative pressure value of 20 ℃ as the standard value. When calibrating density relays, the measured pressure is converted into an equivalent pressure value at 20 ℃ based on the correspondence between pressure and temperature, and then compared.
This product is an intelligent SF6 gas density relay calibration instrument. This calibrator uses high-precision pressure sensors and high-speed A/D converters, combined with a 32-bit high-performance microprocessor, to perform performance verification on various SF6 gas density relays. It can accurately measure the pressure value at the current temperature when the signal is activated, automatically convert the standard pressure at any ambient temperature to 20 ℃, and has printing, storage, and USB conversion functions. At the same time, it can automatically identify faults during the testing process and determine the contact status of the density relay. This product is easy to carry, easy to operate, has high testing accuracy, strong stability, and good reliability, reflecting the "intelligent" characteristics of the instrument.
Product names： SF6 density relay calibrator、Sulfur hexafluoride density relay calibrator、SF6 gas density relay calibrator、SF6 density relay tester、Density relay calibrator
| measurement accuracy | 0.2 F●S |
| Pressure displayresolution | 0.001MPa |
| Pressure measuring range | 0～0.99MPa |
| Temperature measurement range | -20℃～80℃ |
| Temperature measurement error | ±0.5℃ |
| SF6 gas emissions | During the entire verification process, SF6 gas emissions are extremely low |
| Display | Industrial grade 7-inch full-color high-definition LCD screen, displaying both measured pressure values and equivalent pressure values at 20 ℃ |
| Operating mode | Touch screen |
| Printing method | Array printing |
| Data Storage | Up to 1000 measurement data can be stored |
| Working power supply | 24V lithium battery power supply |
| Overall Power Consumption | ≤20W |
| Host size/weight | 380×290×250(mm3)/4.9kg |
| Attachment box size/weight | 390×340×200(mm3)/7.8kg |
1.The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice.In case of misappropriation or copying, legal liability will be investigated.
2.For more information aboutWuhan UHV, please enter Product center . Service email：info@hvtest.cc
1、High testing accuracy: The core components are imported, with high integration, precision, repeatability, and reliability. Due to its use of high-speed sampling A/D, it can not only measure density relays with conventional operating values, but also density relays with particularly small operating values.
2、The calibration process does not require a constant temperature chamber, and SF6 gas density relays and pressure gauges can be calibrated within any effective temperature range. By using pressure and temperature dynamic compensation algorithms, the pressure and 20 ℃ equivalent pressure values are automatically converted, and the pressure at the current temperature and the equivalent pressure at 20 ℃ are displayed, completely solving the problem of difficult on-site calibration of SF6 gas density relays.
3、Powerful function: capable of measuring density relays of different pressure types, both relative and absolute pressure density relays can be measured.
4、The initial state of the 1-3 sets of contacts in the density relay can be in any form (normally open or normally closed), and the up and down values of the 1-3 sets of contacts can be measured simultaneously, such as alarm, lockout, overpressure, etc. Therefore, this instrument can adapt to the fully automatic calibration of all new and old density relays.
5、Simultaneously displaying the current pressure and ambient temperature during measurement, solving the problem of on-site calibration of density relays.
6、Human computer interface friendly: equipped with a 7-inch high-definition full-color touch screen, easy to operate, beautiful interface, and all parameters and status are clear at a glance.
7、Complete supporting transition joints: This product is a portable instrument equipped with multiple types of transition joints. Most models of switch density relays can be verified on-site without disassembly, making it the best choice for SF6 density relay calibration.
8、Low gas consumption: During the verification process, the gas consumption is minimal, SF6 gas is not wasted, testing costs are low, and there is no pollution.
9、Support data storage: The instrument is equipped with a built-in large capacity memory, which can instantly save test results and has the function of saving power down data. It can query and print historical test data at any time.
10、Support printing: After the test is completed, all relevant test results can be printed immediately, and historical data can also be printed for analysis.
11、USB flash drive storage: supports USB flash drive storage of historical test data, which can be read through the supporting upper computer software for easy and fast operation.
12、Convenient to carry: The instrument is powered by a large capacity lithium battery and does not require AC power, solving the problem of difficulty in obtaining electricity outdoors. After the instrument is fully charged, it can work for a long time and can also be plugged into a charger to work at the same time.
13、Powerful PC software features: The accompanying PC upper computer application software is powerful and easy to operate, enabling data display, Word format saving, printing, and generating complete test reports for centralized data management.
14、Switching between Chinese and English: Customers can switch between Chinese and English on the main interface of the instrument, which can meet the needs of different customer groups, and other languages can be customized.
Enterprise products in strict accordance with international and national standards and rules of industry production, through the national, provincial and municipal electric power research institute and electric power authorities detection, measuring center, fully passed the ISO9001 international quality management system certification, the licence for manufacturing measuring instruments of the People's Republic of China, GB/T19001-2016 quality management system requirements, GB/T24001-2016 environmental management system requirements, GB/T45001-2020 occupational health and safety management system requirements.
email： info@hvtest.cc
Skype： Tina Qiao
+8615172408058
