How much vacuum does it take to draw chemical into the measuring chamber?
Under most general conditions it will take from 7″ to 15″ of vacuum to draw chemical into the measuring chamber. The actual amount of vacuum required to draw chemical depends on many factors, such as how long the suction lines are to the chemical containers, how high the chemical has to be drawn vertically, the size of the suction line, the viscosity of the chemical, the number of elbows, tees, and other restriction in the suction line, how fast the chemical is being drawn, etc. The harder it is to draw the chemical, the higher the vacuum level the machine will need to create to be able to draw the chemical. The vacuum gauge at the top of the machine indicates the actual vacuum being created while drawing chemicals, which in turn indicates how hard it is working to draw in the chemical.
