The formula to calculate the Pressure is:
\[ P_a = (\gamma_m \cdot h_m) - (\gamma_1 \cdot h_1) \]
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.
Let's assume the following values:
Using the formula:
\[ P_a = (500 \cdot 0.075) - (1342 \cdot 0.122) = -126.224 \text{ Pa} \]
| 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 |