2/11/2024 0 Comments Hydraulic ram pressure calculator![]() The dimensions we need are of the surface area of the source material, not necessarily the surface area of the rosin bag itself. Source Material Surface Area = Approximate length of the Bag x Approximate Width of the Bag Now with the hard part over with, we move on to a more simple calculation, which is the surface area of the rosin bag, measured in inches. The Cylinder's Effective Surface Area = 3.14 x Radius of Cylinder^2 If your press displays PSI on the pressure gauge, then do the following calculation to find the force being generated:įorce = PSI Reading on the Gauge x Cylinder's Effective Surface Area (The Rosin Press Ram) ![]() If you’re using a pneumatic press that displays internal pressure (PSI) on the gauge instead of tones (force), then a conversion from pressure to force is required. We can use the tons of force on the gauge for our Platen PSI calculator. Check to make sure the ram diameter matches that of the gauge, and in this case no additional calculations of force are needed. In most hydraulic shop presses, the internal pressure gauge is already matched to the diameter of the driving ram, so no additional calculations of force are needed. There are different calculations of force generated by your press depending on whether the gauge on your press reads in tons (hydraulic press) or PSI (pneumatic press). Platen PSI (Pressure on Source Material) = Force Exerted by Press / Source Material Surface Area Stated another way, Platen PSI is the relationship between the dimensions of your source material and the tones of force being applied. Platen pressure equals the pounds of force divided by the surface area of your source material, which closely matches the rosin bag. This pressure onto the source material is the only pressure that matters during extraction. Platen pressure tells us how much pressure is being exerted onto the source material. Measuring PSI at the rosin bag itself, often referred to as platen PSI, gives us the clearest reading of actual pressure on your source material inside the rosin bag.Ĭalculating platen PSI requires a measurement of the dimensions of your rosin bag (area in square inches) and the tonnes of force being applied (in pounds). Measuring the pressure exerted on your cannabis starting material as pounds per square inch (PSI) is the most effective way to convey actual pressure generated during rosin extraction. The pressure we want to measure isn’t given by internal pressure gauges on DIY rosin presses. The level of pressure we need to control during extraction is NOT the same thing as how many tons of force we apply from the press itself onto the rosin plates. Too little pressure and you end up overcompensating with excessive temperatures and evaporating away terpenes. Too much pressure and you risk equipment failure and reduced oil flow efficiency. ![]() Pressing high grade rosin requires exerting just the right amount of pressure onto cannabis source material. So how is pressure measured, and how can I know the actual amount of pressure inside my rosin bag? Achieving the correct level of pressure during solventless extraction frees cannabis to unlock that unique expression of cannabinoid and terpene-rich oil we know and love as rosin.
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