How to measure the pressure of titanium heat exchanger?

1. Connect the nitrogen cylinder to the air inlet of the equipment according to the conduit, and tighten the relevant screws.
2. Open the main valve and partial pressure valve of the nitrogen cylinder, first adjust the pressure of the partial pressure valve to the pressure required by the laboratory, and then open the equipment inlet valve to make the gas flow into the equipment relatively slowly.
3. When the pressure value displayed by the titanium heat exchanger is the same as the pressure set on the nitrogen cylinder and has not changed, turn off the inlet valve of the equipment and the outlet valve of the nitrogen cylinder in sequence, and record the pressure value displayed by the equipment for 30 minutes Then observe whether the pressure has changed.