Selecting a Coriolis mass flow meter is an important decision for industrial process measurement. Although Coriolis technology offers direct mass flow measurement, the performance of a particular instrument depends on correct sizing, suitable materials, operating conditions, and configuration.
To help engineers, purchasers, and project contractors make better decisions, here are five common mistakes to avoid when choosing a Coriolis mass flow meter.
Mistake 1: Selecting the Meter Based Only on Pipe Size
One of the most common mistakes is assuming that the flow meter must have the same nominal diameter as the process pipeline.
In practice, meter sizing depends on the required flow range, fluid properties, pressure drop, and measurement performance. A smaller meter may be appropriate for some applications, while another application may require a larger meter to accommodate the maximum flow rate.
How to avoid it: Provide the minimum, normal, and maximum flow rates, together with the process conditions. The meter should be selected based on the actual application rather than pipe diameter alone.
Mistake 2: Ignoring the Minimum Operating Flow Rate
A meter that handles the maximum flow rate may not necessarily meet the required performance at the minimum flow rate.
This is particularly important in processes where production rates change frequently or where the meter operates at low flow for extended periods.
How to avoid it: Confirm the required turndown ratio and the measurement accuracy needed at both low and high flow rates. Ask the manufacturer to evaluate the complete operating range.
Mistake 3: Overlooking Pressure Drop and Flow Velocity
Pressure drop can affect process efficiency, especially in high-pressure gas applications and systems with limited pressure-loss allowances.
Flow velocity is also worth checking because it depends on the meter's internal passage and the fluid's operating conditions. For gas measurement, pressure and temperature influence gas density and therefore affect volumetric flow and velocity calculations.
How to avoid it: Request a sizing assessment that considers pressure drop and flow velocity at relevant operating points. Do not evaluate a meter based only on its nominal flow capacity.
Mistake 4: Choosing Materials Without Considering Fluid Compatibility
Standard stainless steel is suitable for many industrial applications, but it is not the ideal choice for every fluid or operating environment.
Fluid composition, concentration, temperature, and potential corrosive contaminants can all affect material suitability. Process connections and sealing components must also be compatible with the service conditions.
How to avoid it: Provide the complete fluid composition and operating conditions. Confirm the wetted materials and pressure and temperature ratings before placing an order.
Make the Right Choice Before Ordering
A suitable Coriolis mass flow meter should meet the application's measurement requirements, operating conditions, material compatibility, and certification needs.
Qingdao Add Value Flow Metering Co., Ltd. provides Coriolis mass flow meters for a range of industrial applications. Our team can assist with technical review and model selection based on your process data.
Need help selecting a flow meter? Send us your fluid type, flow range, operating pressure, temperature, pipeline size, and required certifications. Our team will review the information and help you evaluate the appropriate configuration.
