1. What is a Hose Monster Flow Test Calculator?

Definition: This calculator determines the flow rate during a Hose Monster flow test using pitot pressure measurements.

Purpose: It helps fire protection professionals evaluate water supply capabilities and system performance.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Flow rate (gallons per minute)
• \( c \) — Discharge coefficient (typically 0.9)
• \( d \) — Outlet diameter (inches, typically 2.5")
• \( P \) — Pitot pressure (psi)

Explanation: The formula calculates flow rate based on the pressure reading from a pitot tube and known outlet characteristics.

3. Importance of Flow Testing

Details: Accurate flow testing ensures fire protection systems meet design requirements and can deliver adequate water supply during emergencies.

4. Using the Calculator

Tips: Enter the discharge coefficient (default 0.9), outlet diameter (default 2.5 inches), and pitot pressure reading. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical discharge coefficient?
A: Most Hose Monster devices have a discharge coefficient around 0.9, but consult manufacturer specifications for exact values.

Q2: Why is the outlet diameter squared in the formula?
A: The flow area is proportional to the square of the diameter, significantly affecting flow capacity.

Q3: How accurate is this calculation?
A: With proper pitot tube placement and accurate measurements, results are typically within ±5% of actual flow.

Q4: What if my outlet diameter is different?
A: Always use the actual outlet diameter of your specific Hose Monster device for accurate results.

Q5: Can this be used for other flow tests?
A: This formula is specific to Hose Monster devices. Other flow test methods may require different calculations.