PFS Meta Controller

  • Current


    2023 Aug/21-Sep/04

    August 22:
    It appears everything is working now, exept the dewar shell heater. The “LN2” component of the “Air Heater” is working hard to compensate (plot-3, brown line) , but the shell itself is about 0.5 deg [C] cooler than is should be (see plot-4, purple line).

    Since July/11:

    Glycol: Pg=2.0, I=0.5, F=-0.400+0.0470*(SetP-Tout)+"GTC"
    GTC = (glycol_supply-glycol_return-0.410)/2 - 0.021*MAX(0,Tout-17.0)
    Air: Pa=15.0, Da=10.0
    DHT = +0.270
    PMT = -0.105
    LN2(bank) = 0.75
    LN2(cap) = 0.65