SF6 switches are widely used high-voltage electrical devices in power systems. The reliable operation of SF6 switches has become one of the primary concerns for power supply and consumption departments. The SF6 gas density relay is a critical component used to monitor changes in the density of SF6 gas within the switch body during operation, and its performance directly affects the operational safety of the SF6 switch. In practical applications, SF6 gas density relays may become less flexible or develop poor contact points after a period due to infrequent use. Some may also experience degraded temperature compensation performance, leading to false actions when there is a sudden change in environmental temperature. Therefore, according to DL/T596-2005 "Preventive Test Procedures for Electrical Equipment," all SF6 switch users should regularly calibrate their SF6 gas density relays. From an operational perspective, it is also essential to periodically calibrate SF6 density relays and pressure gauges in the field.

This product is an intelligent SF6 gas density relay calibration instrument. The calibrator uses high-precision pressure sensors and high-speed A/D converters, combined with a 32-bit high-performance microprocessor, to perform performance calibration on various SF6 gas density relays. It can accurately measure the pressure value at the current temperature when signals are triggered and automatically convert the standard pressure at any environmental temperature to that at 20°C. Additionally, it features printing, storage, and USB data transfer capabilities, as well as automatic fault recognition during the testing process. This product is portable, easy to operate, highly accurate, stable, and reliable, embodying the characteristics of an "intelligent" instrument.

The main functions of the instrument include measuring the alarm values, lockout values, alarm reset values, and lockout reset values of SF6 gas density relays. The measurement process supports both single lockout measurement and dual lockout measurement. Furthermore, the instrument offers the functionality to calibrate pressure gauges at room temperature and at 20 degrees Celsius.

1. High Measurement Precision: Core components use imported devices, featuring high integration, precision, repeatability, and reliability.

2. Highly Intelligent: The calibration process does not require a constant temperature environment; it can calibrate SF6 gas density relays and pressure gauges within any effective temperature range. Using dynamic pressure and temperature compensation algorithms, it automatically completes pressure measurements and converts equivalent pressure values at 20°C, displaying the current temperature pressure and the equivalent pressure at 20°C, effectively solving the difficulty of on-site calibration for SF6 gas density relays.

3. Powerful Functionality: Capable of simultaneously testing one group of alarm signals and two groups of lockout signals, with additional features for room temperature pressure gauge calibration and 20-degree pressure gauge calibration.

4. User-Friendly Interface: Equipped with a large-screen Chinese LCD and a rotary mouse interface, making operations simple, the interface aesthetically pleasing, and all parameters and states easily visible. The instrument automatically completes the test process without requiring manual intervention, avoiding complex manual gas path adjustments.

5. Comprehensive Transition Adapters: As a portable instrument, it comes with various types of transition adapters, allowing most models of switch density relays to be calibrated on-site without disassembly, making it the optimal choice for SF6 density relay calibration.

6. Minimal Gas Consumption: During calibration, gas consumption is minimal, preventing waste of SF6 gas, reducing test costs, and ensuring no pollution.

7. Data Storage Support: The instrument has built-in memory for immediate saving of test results, including data retention in case of power loss, allowing for easy query and printing of historical test data at any time.

8. Report Printing Support: Test results are printed in a formatted report style with intelligent analysis capabilities.

9. Clock Adjustment: Features the ability to modify the system clock online.

10. USB Data Transfer: Supports transferring test data via USB to a PC for easy reading, providing a simple and quick operation.

11. Robust PC Software: The PC application software is powerful yet simple to operate, enabling data analysis, saving, printing, and generating comprehensive test reports, facilitating centralized data management.

1. Power Supply: AC 220V/50Hz

2. Instrument Power: 50W

3. Instrument Precision: Class 0.25

4. Pressure Calibration Range: 0～1MPa, Pressure Calibration Resolution: 0.001MPa

5. Temperature Measurement Range: -20℃ to 80℃, Temperature Measurement Resolution: 0.1℃

6. Operating Humidity: ≤90% RH

7. Calibration Objects: Single alarm, single lockout, single alarm with single lockout, single alarm with dual lockouts

8. SF6 Gas Density Display Mode: Pressure under the measured environment, equivalent pressure at 20℃

9. Display Mode: 320×240 LCD screen

10. Operation Mode: Rotary mouse (one-button flywheel) input

11. Printer Model: High-speed micro printer

12. Printing Mode: Formatted report printing in Chinese characters

13. Storage Capacity: Simultaneously stores 150 sets of test results

14. Main Unit Dimensions: 400×320×160 mm³, Weight: 6.2 kg; Accessory Box Dimensions: 400×370×200 mm³, Weight: 4.8 kg