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can help the syringe to better seal, and you can also apply some silicone grease to
help seal.
2) Calibration: It is used to check whether the calibration of the instrument is
accurate. After pressing the calibration button, the instrument enters the inspection
procedure. After the automatic oil feeding and oil filtering, the instrument will
prompt to inject gas. You can inject any amount of gas as needed. After injecting
the gas, press the confirmation key. The instrument will prompt you to inject the gas
at the same time as the gas content is displayed at the end of the measurement.
This can be measured any number of times. Drain the oil and exit the menu.
