XAS:Equipment/LOTO-ENG: HPE-200

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HPE-200 is a pressure controller.



  • Open the valve A to let the Helium flow in the first circuit. The pressure reached in this circuit is shown in B it is usually higher than 50 bar.
  • In order to give a certain pressure (X bar for example) to DAC membrane:
  1. Open the valve C until the pressure in the second circuit slightly overcomes a certain value X bar. The pressure is shown in D and on the monitor G.
  2. Close the valve C.
  3. Open the valve E to releases some gas from F to stabilize the pressure at X bar.
  4. When the pressure X is reached, close E and open H which let the Helium flow from I in the membrane.
  • Repeat above procedures for each pressure point.

CAUTION: Remember to close all the valves when the measurement is finished.