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  1. protons

    Centrifugal compressor performance

    Hi! Please help for understanding Centrifugal com curves and some data. I work with Dresser Datum centrifugal back to back two stage compressor P1~27-34bar, P2~65 - 100bar. Please look at attach LP and HP performance maps: My questions: 1) Did the compressor stages is properly loaded or i need...
  2. protons

    Dry gas seal flow control system

    Good day! Work with Dresser Rand back to back centrifugal compressor (pumping natural Gas). From data sheets, Dry gas seal flow control system (see attach) is desing for normaly work when discharge pressure after compressor is 90 bar. Just now we want to work with discharge pressure 65bar, in...
  3. protons

    Electrical motor bearing grease

    Hi! I have one(Duty master AC 56kW motor, ~380, RPM 3570 ) which are work at different speeds(conect to VFD) and need to grease berings. At motor name plate is said, that bearings is greas with Mobile SHC-32 grease, I do not have access to this greas. Maybe someone can tell a good analogue of...
  4. protons

    Calibration unit for Rousemont sensors

    Please help me choose what calibration unit better buy. Dpi325 or Dpi 620. I work for Gas industry. Mostly i need to calibrate Rosemount sensors, model 1151 and 3051 with ranges 0.....150 in H20, 0.....500 in H2O, 0....60 psi, 0...1500 psi, 0....2000 psi. Maybe is some other pneumatic...

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