Calculating flow rates & conversion factors for flow meters and valves

Fluidat is Bronkhorst’s online calculation software to calculate flow rates and conversion factors for both flow meters and valves. Besides making calculations, you have access to over 1800 different fluid properties and corresponding data.

Working with fluids and ever-changing process conditions, you can face many challenges. Especially when you try to understand the fluid behaviour depending on actual pressure and temperature conditions in the process. How does the fluid (gas or liquid) behave in your application? What are the requirements for your process? This will influence the choice of your flow meter. So, a correct selection of your flow meter is crucial and understanding how your process works even more.

This is where Fluidat can assist you. Fluidat helps you understand the instruments capability. When pressure or temperature conditions change or even when the medium changes, flows must be converted to the new situation. Fluidat can help you decide if your flow meter is capable to do so. Sometimes we must accept that returning the instrument for recalibration is the only option.

Thermal mass flow meters and flow controllers are very reliable devices, but the accuracy depends on the temperature, pressure and medium. In the ‘gas conversion’ part of Fluidat, the user has to choose a gas to find the conversion factor. This gas should be different than the one the instrument was calibrated for. This gas can be a pure gas, or you can create a gas mixture. 
 
With this tool you simply choose the ‘Fluid from’ and ‘Fluid to’, to find the conversion factor. You can also select your exact model to improve the accuracy of the conversion. The conversion factor can then be applied to the output measurement of the flow controller to know the actual flow of the new gas.

Creating a vapor by using a liquid flow, a carrier gas and a heater, is something what Bronkhorst is doing for years now with the CEM (Controlled Evaporation Mixing) systems. 
Our CEM calculation tool makes this very easy. You can calculate whether a liquid can be evaporated at the carrier gas flow rate, pressure, and temperature you have in mind. It is not only pure physics that is applied here, but you can also select the right Bronkhorst CEM model for this evaporation.

With the Pressure difference calculator you can calculate and size your ES-FLOW ultrasonic flow meter and (mini) CORI FLOW mass flow instruments.

By selecting the instrument and actuator, the program calculates the pressure drop over the instrument and - if you have selected an actuator - the Kv value. After the calculation, you will get an overview with the selected instrument and the calculation of the total error over the complete range of the instrument. This is expressed in a trompet-curve.