Introduction to Slotting Machine : U-tube differential manometer It is used to measure pressure difference at two points in a pipe or between two pipes at different levels. If What you looking for is not here, you may send a request to modify articles, Notes, and Content modification, Feedback, Suggestions here (Team will reply as early as Possible ): Manometer – types , Working , Advantages , Disadvantages. The pressure is measured in inches of water (H 2 O). This type of manometer is used when the difference between the densities of the two liquids is small. This manometer consists of a U shaped tube in which the manometeric liquid is filled. Manometers are devices used for measuring the pressure at a point in a fluid, by balancing the column of fluid by the same or another column of fluid. it is simple to construct,cheap,very accurative. The pressure at point A is given by p = wh, where w is the specific weight of the liquid. It gives off a dangerous gas and is flatly dangerous and it will make a walking humanoid zombie out of you that you would wish was dead. Disadvantages of Manometer : They might break during transport. Hence errors may result due to change in the temperature 1. If ‘dm‘is the manometric fluid density, ‘d1’ is the density of the fluid over the manometer, ‘P2’ is the atmospheric pressure (for general measurement of gas pressure) and ‘P1’ is the gas pressure, and also if d1<