1. What is Differential Pressure?

Differential pressure (ΔP) is the difference in pressure between two points in a system. It's calculated by subtracting the lower pressure (P_low) from the higher pressure (P_high).

2. How Does the Calculator Work?

The calculator uses the differential pressure equation:

Where:

• \( \Delta P \) — Differential pressure (Pa)
• \( P_{high} \) — Higher pressure measurement (Pa)
• \( P_{low} \) — Lower pressure measurement (Pa)

Explanation: The equation simply calculates the difference between two pressure measurements at different points in a system.

3. Importance of Differential Pressure

Details: Differential pressure measurements are crucial in various applications including HVAC systems, fluid dynamics, filtration systems, and industrial process control.

4. Using the Calculator

Tips: Enter both pressure values in pascals (Pa). The high pressure should be greater than or equal to the low pressure for meaningful results.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use for pressure?
A: This calculator uses pascals (Pa), but you can convert from other units like psi or bar before entering values.

Q2: What if my low pressure is higher than high pressure?
A: The calculator will show a negative value, indicating you may have reversed the measurements.

Q3: Where is differential pressure used?
A: Common applications include filter monitoring, flow measurement, leak testing, and ventilation system balancing.

Q4: How accurate is this calculation?
A: The calculation is mathematically precise, but accuracy depends on the precision of your input measurements.

Q5: Can I calculate flow rate from differential pressure?
A: Flow rate can be derived from ΔP in some systems, but additional parameters (like pipe diameter and fluid properties) are needed.