Peristaltic Pump Flow Rate Calculation

Peristaltic Pump Flow Rate Equation:

\[ Q_{per} = \frac{\pi \times r_{tube}^2 \times RPM_{per} \times L_{tube}}{60} \]

Tube Radius (r_tube):

centimeters

Revolutions Per Minute (RPM_per):

RPM

Tube Length Per Revolution (L_tube):

centimeters

Flow Rate (Q_per):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Peristaltic Pump Flow Rate Equation?

The peristaltic pump flow rate equation calculates the volumetric flow rate of fluid being pumped through a peristaltic pump based on tube dimensions and pump speed. This calculation is essential for precise fluid delivery in various applications.

2. How Does the Calculator Work?

The calculator uses the peristaltic pump flow rate equation:

\[ Q_{per} = \frac{\pi \times r_{tube}^2 \times RPM_{per} \times L_{tube}}{60} \]

Where:

\( Q_{per} \) — Flow rate (milliliters per minute)
\( r_{tube} \) — Tube radius (centimeters)
\( RPM_{per} \) — Revolutions per minute
\( L_{tube} \) — Tube length per revolution (centimeters)

Explanation: The equation calculates the volume of fluid displaced per minute based on the cross-sectional area of the tube and the linear displacement per revolution.

3. Importance of Flow Rate Calculation

Details: Accurate flow rate calculation is crucial for applications requiring precise fluid delivery, such as medical infusion pumps, laboratory experiments, and industrial processes.

4. Using the Calculator

Tips: Enter tube radius in centimeters, revolutions per minute, and tube length per revolution in centimeters. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect peristaltic pump flow rate accuracy?
A: Tube elasticity, wear, fluid viscosity, and pump head design can all affect the actual flow rate compared to theoretical calculations.

Q2: How does tube material affect the calculation?
A: Different tube materials have varying elasticity and wall thickness, which can affect the actual internal diameter and flow characteristics.

Q3: Can this equation be used for all peristaltic pumps?
A: This equation provides a theoretical maximum. Actual flow rates may vary based on specific pump design and operating conditions.

Q4: Why is the division by 60 included in the equation?
A: The division by 60 converts the result from milliliters per revolution to milliliters per minute when using RPM as input.

Q5: How accurate is this calculation for clinical applications?
A: For medical applications, pumps should be calibrated regularly as actual flow rates may deviate from theoretical calculations due to various factors.