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U-Tube Manometer equation Calculator

Formula

The formula to calculate the Pressure is:

$P_a = (\gamma_m \cdot h_m) - (\gamma_1 \cdot h_1)$

Definition

Pressure a is pressure at a point a. Specific Weight of Manometer liquid is used in calculating the U-tube manometer equation. Height of manometer liquid present in the manometer tube. Specific weight 1 is the specific weight of the fluid 1. Height of column 1 is the length of the column1 measured from bottom to Top.

Example Calculation

Let's assume the following values:

Specific Weight of Manometer Liquid (γm) = 500 N/m³
Height of Manometer Liquid (hm) = 0.075 m
Specific Weight 1 (γ1) = 1342 N/m³
Height of Column 1 (h1) = 0.122 m

Using the formula:

$P_a = (500 \cdot 0.075) - (1342 \cdot 0.122) = -126.224 \text{ Pa}$

Conversion Chart

Specific Weight of Manometer Liquid (γm)	Height of Manometer Liquid (hm)	Specific Weight 1 (γ1)	Height of Column 1 (h1)	Pressure (Pa)
500 N/m³	0.07 m	1342 N/m³	0.122 m	-128.724000000000 Pa
500 N/m³	0.08 m	1342 N/m³	0.122 m	-123.724000000000 Pa