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Venturi Meter Differential Pressure Volumetric Flow Rate Calculator

Easily calculate and compute venturi meter differential pressure volumetric flow rate calculator with accurate equations, live formulas, and expert guidance.

Main pipe upstream diameter.

Constricted throat diameter.

Differential pressure between inlet and throat (hPa/mbar).

Standard machined venturi Cd ≈ 0.98 to 0.99.

Calculated Result
79.3 m³/h

Flow Rate

Flow Rate

79.3 m³/h

Volumetric Flow Rate M3 Per Hour

79.3

Flow Rate Liters Per Min

1321.1

Flow Rate Liters Per Sec

22

Venturi Beta Diameter Ratio D2 Over D1

0.5

79.3 — m³/h

Calculation Breakdown

  1. Applied FormulaComputes fluid volumetric flow rate (m³/h and L/min) from differential pressure (ΔP) across an ASME / ISO 5167 classical Venturi tube flow meter.Q = C_d A_2 \sqrt{\frac{2 \Delta P}{\rho (1 - \beta^4)}}, \quad \beta = \frac{D_2}{D_1}

Venturi Meter Flow Rate Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.020405979Flow Rate

What Is the Venturi Meter Differential Pressure Volumetric Flow Rate Calculator?

This tool computes venturi meter differential pressure volumetric flow rate calculator with high precision arithmetic.

How Does the Venturi Meter Differential Pressure Volumetric Flow Rate Calculator Work?

Computes fluid volumetric flow rate (m³/h and L/min) from differential pressure (ΔP) across an ASME / ISO 5167 classical Venturi tube flow meter.

Venturi Meter Differential Pressure Volumetric Flow Rate Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

Q=CdA22ΔPρ(1−β4),β=D2D1Q = C_d A_2 \sqrt{\frac{2 \Delta P}{\rho (1 - \beta^4)}}, \quad \beta = \frac{D_2}{D_1}

Computes fluid volumetric flow rate (m³/h and L/min) from differential pressure (ΔP) across an ASME / ISO 5167 classical Venturi tube flow meter.

How to Use the Venturi Meter Differential Pressure Volumetric Flow Rate Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Venturi Meter Differential Pressure Volumetric Flow Rate Calculator Example

Input Values:

inletPipeDiameterMm:150
throatDiameterMm:75
differentialPressureMilliBar:120
dischargeCoefficientCd:0.985
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required m³/h.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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