Vacuum Switch Vacuum Degree Tester Quotation
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Vacuum Switch Vacuum Degree Tester (English name: Vacuum Switch Vacuum Degree Tester or Vacuum Tester), mainly used for quantitative measurement of vacuum degree inside the arc extinguishing chamber of various types of vacuum switches, it uses a single-chip computer as the main control unit, the test process is fully automated, in principle, it changes the method of using current peak value for calibration in similar products at home and abroad, and uses ion charge for calibration, effectively suppressing the interference of pulse power supply during the test process, making the test more stable and reliable
Technical Parameters
1. Power supply: AC220V+15%, 50Hz;
2. Measurement range: 10～10Pa;
3. Electric field voltage: 18kV;
4. Magnetic field voltage: 1600V;
5. Instrument accuracy: 5%;
6. Operating environment: -10℃～40℃;
7. External dimensions: 460mm×335mm×330mm.
8. Host weight: 12kg;
2. Connect the vacuum tube under test to the instrument (Note: If using a wound magnetic control coil, wrap the flat cable around the vacuum switch three times, then connect). The specific operation is: first connect the instrument's grounding terminal to the earth, then connect the magnetic control coil to the positive and negative terminals of the instrument's magnetic field voltage through the magnetic field current wire, connect the high-voltage output terminal to the static contact of the vacuum tube using a high-voltage cable, and connect the ion current input terminal to the moving contact of the vacuum tube through the ion current wire (shielded wire).
3. Function selection. After wiring is completed, turn on the instrument power switch. At this time, you can use the "Settings" key to move the cursor to select the year, month, and day to be adjusted, then press the "↑" key to adjust the numbers to match the current date. After adjustment, press the "Confirm" key. At this time, you can use the "↑" key or the "Settings" key to move the cursor to select the corresponding function. The instrument will execute tasks such as tube type setting, measurement, and viewing historical data according to the selected function.
4. Set tube type. After selecting the "Set Tube Type" function, press the confirm key to enter the tube type setting interface. At this time, press the "↑" key or the "Settings" key to perform tube type setting. The specific tube type setting parameter table is as follows:
Arc extinguishing chamber diameter ≤80mm Type 1 tube
80<Arc extinguishing chamber diameter ≤100mm Type 2 tube
100mm<Arc extinguishing chamber diameter ≤110mm Type 3 tube
110mm<Arc extinguishing chamber diameter ≤130mm Type 4 tube
5. Vacuum degree measurement. Before measurement, tube type setting must be performed (see step 4). Press the confirm key to return, select "Measurement" and press the confirm key to perform vacuum degree measurement. When the charging time decreases from 60 seconds to 0 seconds, the instrument stops charging, and then outputs pulse high voltage and simultaneously outputs pulse magnetic field voltage. Subsequently, the vacuum degree value of the vacuum switch under test will be displayed on the screen. After the measurement is completed, press the "Save" key to save the current LCD displayed data, and press the "Print" key to print the current LCD displayed data. If you want to measure again, press the "Reset" key or use the "↑" or "Settings" key to place the cursor on "Return", then press the "Confirm" key to return, and select the measurement function to measure again.
6. After the measurement is completed, turn off the instrument power and wait 5 seconds before disconnecting the wires. When disconnecting, first remove the test wires connected to the instrument, then remove the connections to the vacuum tube and magnetic control coil.
