Mass Flow Meters Explained: Principles, Types, and Selection

Mass Flow Meters Explained: Principles, Types, and Selection

A mass flow meter is an instrument that directly measures the mass flow rate of a fluid, independent of temperature and pressure changes. This makes it essential for accurate batching, custody transfer, and process control where mass rather than volume is the critical parameter. Silver Automation Instruments, a manufacturer founded in 2010 with over 15 years of experience, provides a range of mass flow meters designed for industrial applications. The company specializes in designing and manufacturing cost-effective, reliable instrumentation solutions for flow, pressure, temperature, and level measurement.

Why Mass Flow Measurement Matters

Traditional volumetric flow meters can be affected by fluctuations in temperature and pressure, leading to errors. Mass flow meters eliminate this uncertainty by measuring mass directly. In industries such as power generation, chemical, petrochemical, food, pharmaceutical, and district heating, accurate mass flow data is critical for energy management, product quality, and regulatory compliance.

Types of Mass Flow Meters from Silver Automation Instruments

Coriolis Mass Flow Meter (Model SH-CM)

This is a high-pressure Coriolis mass flow meter that can also be used as a cryogenic flow meter, fuel mass flow meter, and gas mass flow meter. It is constructed from stainless steel 316L and is ATEX certified. The meter handles fluid temperatures from –200 °C to 350 °C and flow rates from approximately 10 kg/h to 1500 t/h. Communication options include 4‑20 mA, pulse, frequency, MODBUS RTU, HART, Profibus‑DP, and Profibus‑PA.

Thermal Mass Flow Meter (Model SRK-100)

Designed exclusively for gas measurement, this thermal mass flow meter measures gases such as air, compressed air, N₂, natural gas, biogas, O₂, and LPG. It is available in inline or insertion types for pipe sizes from DN15 to DN2000. The gas temperature range is –20 °C to 300 °C, and the meter offers 4‑20 mA output with RS485, MODBUS RTU, or HART communication.

Low Flow Thermal Mass Flow Meter (Model SRK-DL)

This micro thermal mass flow meter is intended for very low flow rates, from 2 sccm to 30 SLM, with an accuracy of ±1% F.S. It is used in semiconductor, medical, analytical instruments, fuel cells, and environmental monitoring. The SRK-DL can also function as a flow controller.

Micro Coriolis Mass Flow Meter (Model SH-CMF-FE)

Based on the Coriolis principle, this meter handles flow rates from 40 g/h to 1000 kg/h with an accuracy of ±0.25% to ±0.5%. It is suitable for clean liquids and gases in the food, (petro)chemical, pharmaceutical, fermentation, semiconductor, and fuel cell industries. The SH-CMF-FE can operate as a flow meter or controller.

Steam Mass Flow Meter (Model STLU-VFN)

This is a steam mass flow meter based on the vortex principle, with built‑in temperature and pressure compensation. It is ATEX approved, handles pipe sizes DN15–DN300, and measures saturated and superheated steam up to 500 °C. The sensor material is stainless steel 304 or 316.

How to Select the Right Mass Flow Meter

1. Identify the fluid – Is it gas, liquid, steam, cryogenic, or multiphase?
2. Define flow rate and accuracy requirements – Low flow may require micro thermal or micro Coriolis; high flow may need a larger Coriolis or insertion thermal meter.
3. Consider temperature and pressure – Check the meter’s rated range (e.g., –200 °C to 350 °C for the SH-CM).
4. Hazardous area needs – ATEX certification is available on several models.
5. Choose installation type – Inline for small pipes, insertion for large ducts.
6. Select output and communication – 4‑20 mA, MODBUS, HART, Profibus, etc.
7. Contact Silver Automation Instruments – Their R&D team of 20 engineers and 15 years of experience can help tailor the solution.

Common Use Cases

• Steam mass flow in power generation, chemical plants, and district heating (model STLU-VFN).
• Compressed air monitoring in manufacturing and automotive facilities (model SRK-100).
• Fuel flow measurement for marine, power generation, and engine test stands (model SH-CM).
• Cryogenic liquid nitrogen, LNG, and liquid hydrogen measurement (model SH-CM).
• Low flow chemical dosing in pharmaceutical and semiconductor processes (models SH-CMF-FE and SRK-DL).

Comparison: Coriolis vs. Thermal Mass Flow Meters

The table below compares two key technologies offered by Silver Automation Instruments, based on published product specifications.

Frequently Asked Questions

Conclusion

Choosing the right mass flow meter requires understanding your fluid properties, process conditions, and accuracy needs. Silver Automation Instruments offers a comprehensive range – from Coriolis and thermal to micro‑flow and steam meters – backed by a 10,000 m² manufacturing facility, an 80‑person workforce, and over 15 years of experience. For personalized assistance, download the company brochure or contact the team.

Contact Information
Email: sales@silverinstruments.com
Phone: +86 25-52155837
WhatsApp: +86 18936759191