Product switches are widely used high-voltage electrical appliances in power systems, and the reliable operation of SF6 switches has become one of the concerns of power supply and consumption departments. The KDJD-B high-precision SF6 gas density relay calibrator is an important component used to monitor the changes in SF6 gas density in the SF6 switch body during operation. 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.

The gas pressure in a sealed container varies with temperature, and the relative pressure value of SF6 at 20 ℃ is usually taken as the standard value. During on-site verification, the SF6 pressure values measured at a certain ambient temperature must be converted to their corresponding equivalent pressure values at 20 ℃ to determine the performance of the density relay.

Product features of KDJD-B high-precision SF6 gas density relay calibrator

1. Using a 32-bit ARM microcontroller and TI's high-speed signal processing chip for detection and control, with a high degree of integration. Mechatronics design, high precision, good repeatability, and high reliability.

2. The Chinese LCD screen and rotating mouse (one click shuttle) human-machine interface are easy to operate and have a beautiful interface.

3. Automatically complete pressure measurement and 20 ℃ value conversion, thus achieving dynamic automatic compensation between pressure and temperature. And display the pressure at the tested ambient temperature, the pressure at the ambient temperature of 20 ℃, and the ambient temperature. Solved the problem of difficult on-site calibration of SF6 gas density relays.

4. The testing process is automatically completed by instruments without manual intervention, avoiding tedious manual air circuit adjustment operations.

5. Print test results in English report format and perform intelligent analysis on the test results.

6. Simultaneously store 50 test results, with power-off data protection function, and can query and print previous test results in real time.

7. During the calibration process, a constant temperature chamber is not required, and SF6 gas density relays and pressure gauges can be calibrated within the effective temperature range.

8. Equipped with multiple types of transition joints, most density relays for switches can be verified on-site without disassembly.

9. The verification process consumes less gas, does not waste SF6 gas, has low testing costs, and is environmentally friendly.

10. It has the function of online modification of system clock and online modification of system pressure, which can be corrected on site.

11. The core components are imported and have reliable performance. They can simultaneously test one set of alarm signals and two sets of locking signals.

12. Portable tool, easy to use and reliable, is a good choice for SF6 density relay calibration.

Technical specifications of KDJD-B high-precision SF6 gas density relay calibrator
1. Working voltage: AC220V, 50Hz Instrument power: 50W
2. Instrument accuracy: 0.2 level
3. Pressure display resolution: 0.001MPa
4. Pressure calibration range: 0-1.0MPa
5. Environmental temperature display resolution: 0.1C