Manometer Calculator
Calculate pressure difference from height difference of manometer fluid columns.
How to Use This Calculator
Measure Δh
Measure the vertical height difference between the two liquid columns.
Enter ρ and g
Use the density of the manometer fluid and gravitational acceleration.
Calculate ΔP
Press Calculate to obtain gauge pressure difference across the taps.
Formula
ΔP = ρ · g · Δh
Where: ΔP is pressure difference, ρ fluid density, g gravity, Δh column height difference.
Example: ρ=1000 kg/m³, g=9.81 m/s², Δh=0.25 m ⇒ ΔP≈ 2452.5 Pa (2.453 kPa).
About Manometer Calculator
A simple U-tube manometer relates pressure difference to fluid column height. This tool computes ΔP for single-fluid manometers; multi-fluid configurations require modified relations.
When to Use This Calculator
- Pressure measurements: Laboratory and HVAC balancing.
- Education: Demonstrate hydrostatic relations.
- Process troubleshooting: Quick differential pressure estimates.
Why Use Our Calculator?
- ✅ Simple: Minimal inputs, immediate results with unit hints.
- ✅ Versatile: Works with any manometer fluid; outputs Pa, kPa, psi.
- ✅ Clear: Shows core equation and an example.
Frequently Asked Questions
Does this handle inclined manometers?
This tool assumes vertical height difference. For inclined devices, use the vertical component of the measured length.
What if using mercury?
Use ρ ≈ 13,546 kg/m³ at room temperature. Be mindful of safety and environmental considerations.
Gauge vs absolute pressure?
ΔP is a differential (gauge) value between two taps. To get absolute, reference one side to vacuum and add atmospheric pressure if needed.