The KDZK-IV vacuum degree tester is an equipment for evaluating the vacuum degree of a vacuum arc extinguishing chamber. It is based on the principle of magnetron discharge and uses a single-chip computer as the main control unit to achieve automation in the testing process. The sampling design of this instrument has changed from the previous method of using peak current for calibration to using ion charge for calibration. In this way, the interference of transient power supply during the testing process is effectively suppressed, making the testing stable and reliable. Due to the use of a computer as the main control unit, this instrument can easily deduct the leakage current caused by environmental factors. The outstanding feature of this instrument is that it realizes the non disassembly measurement of the vacuum extinguishing chamber, directly displays the vacuum degree value, and enables the user of the vacuum circuit breaker to have a detailed understanding of the vacuum status of the extinguishing chamber, providing a reliable basis for the planned replacement of the extinguishing chamber and a strong guarantee for the safe operation of the power grid. It overcomes the defect of the power frequency withstand voltage method that can only judge whether the extinguishing chamber is scrapped.

The KDZK-IV vacuum switch vacuum degree tester has high measurement accuracy, simple operation, easy portability, and strong anti-interference ability. It is particularly suitable for on-site testing by power supply units and is one of the backup instruments for the production, installation, commissioning, and maintenance of vacuum circuit breakers.

1. Quantitatively measure the vacuum degree inside the arc extinguishing chamber of various types of vacuum switches.

2. No need to disassemble the vacuum switch during on-site measurement.

3. The test results are accurate and reliable.

4. LCD Chinese character display makes operation simpler and more convenient.

5. Can save, print, and view test data.

6. Equipped with RS232 communication interface, it can be connected to a computer to achieve various functions such as downloading vacuum degree ion current curve, life estimation, etc.

7. The instrument is lightweight and easy to carry.

1. Vacuum measurement range: 9.999×10-1～1×10-5.

2. Ionic current measurement range: 9.999 × 10-1~1 × 10-7.

3. Measurement error:<10%.

4. Measurement resolution: 10-5pa.

5. Allowable ambient temperature: -20 ℃ to 50 ℃.

6. Air humidity: ≤ 80%.