I've just had a new plastic oil tank installed. It is cylindrical and lying on its side. It contains 1200 ltrs when full. The sight glass has no markings. I can cope with the half way mark being 600 ltrs, but my maths skills don't help with a few others (useful for ordering the max amount each time to keep the price down). The diameter is 88cm. Can any of those of you good with sums help me get a few more markings on the guage, please? Thanks.
As mentioned in the first post, the tank is a cylinder lying on its side, therefore the end where the sight glass is situated is a circle. Half is easy, but the rest is not easily dividable (if there is such a word).
I was confused by your original post. You said that the tank was cylindrical and on its side, but you didn't mention that the sight glass was set into one end. Tanks often have vertical glass cylinders as sight glasses, and I made the wrong assumption.
It’s all about calculating volumes which I think is obvious. You can either divide it evenly and have a idea of what each mark refers to volume wise, I think you need equaled out in volumes . The formula to use is (Angle AOB / 360 deg ) x Pie x r squared. O being center point and A,B being where the triangle meet the radius giving a parallel line across the tank. I will do an Excel sheet at lunch time if I have time.