Precision Mass Flow Controller (MFC) for Gas Mixing Systems

Product Specifications

Technical details and manufacturing context for Precision Mass Flow Controller (MFC)

Definition

This precision mass flow controller (MFC) is a component used in gas mixing and injection systems to regulate the mass flow rate of gases. It ensures accurate gas composition and flow control in manufacturing and research applications. The device typically employs thermal mass flow measurement, which quantifies heat transfer from a heated element to the flowing gas, or Coriolis force measurement, and combines this with a control valve that adjusts based on feedback from the flow sensor to maintain the desired setpoint. The MFC is constructed from materials such as stainless steel, aluminum alloy, ceramic, and electronic components. Key parameters include a flow range of 0–100 L/min (standard; other ranges available on request), accuracy of ±1.0% of setpoint (including linearity and repeatability), repeatability of ±0.2% of full scale under constant conditions, and a response time of 1–2 seconds to within 2% of setpoint. Supply voltage is 24 ±10% V DC with reverse polarity protection, power consumption ≤4 W at nominal voltage, and analog output is isolated 4–20 mA (24 V loop powered). Communication interface is RS-485 with Modbus RTU protocol. Ingress protection is IP54–IP65 (IP65 with optional cable gland) per IEC 60529. Wetted materials are 316L stainless steel (optional Hastelloy C-22) per ASTM A276. Weight is 1.2–1.8 kg depending on fittings. Always verify model-specific values and standards with the legal manufacturer or supplier before procurement.

Working Principle

The MFC operates by measuring the mass flow rate of gas using either thermal or Coriolis principles. In thermal measurement, a heated element transfers heat to the gas; the rate of heat loss correlates with mass flow. In Coriolis measurement, the gas flows through a vibrating tube, and the induced phase shift is proportional to mass flow. The sensor sends a signal to a controller, which compares it to the setpoint and adjusts a control valve to increase or decrease flow accordingly. This closed-loop feedback ensures precise regulation. The device requires a stable power supply and proper installation to maintain accuracy.

Common Materials

Stainless steel, Aluminum alloy, Ceramic, Electronic components

Technical Parameters

Parameter	Typical range	Notes & selection driver
Flow Range	0–100 L/min	Standard range; other ranges available on request
Accuracy	±1.0 % of setpoint	Includes linearity and repeatability
Repeatability	±0.2 % of full scale	Under constant conditions
Response Time	1–2 s	To within 2% of setpoint
Operating Temperature	0–50 °C	For electronics; sensor may have wider range
Supply Voltage	24 ±10% V DC	Reverse polarity protected
Power Consumption	≤4 W	At nominal voltage
Analog Output	4–20 mA	Isolated, 24 V loop powered
Communication Interface	RS-485	Modbus RTU protocol
Ingress Protection	IP54–IP65	IP65 with optional cable glandIEC 60529
Wetted Materials	316L	Optional Hastelloy C-22ASTM A276
Weight	1.2–1.8 kg	Depending on fittings

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Flow Sensor
Measures the actual mass flow rate of the gas passing through the controller

Material: Stainless steel, ceramic
Control Valve
Adjusts the flow area based on signals from the controller to achieve desired flow rate

Material: Stainless steel
Controller Electronics
Processes sensor signals, compares to setpoint, and drives the control valve

Material: Electronic components, PCB
Housing/Body Part
Provides structural integrity and contains internal components

Material: Stainless steel, aluminum alloy

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Precision Mass Flow Controller (MFC).

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Gas Mixing & Injection System

View system integration details

Manufacturers of Precision Mass Flow Controller (MFC)

Manufacturer profiles associated with Precision Mass Flow Controller (MFC).

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Frequently Asked Questions

What is the flow range of this MFC?

The standard flow range is 0–100 L/min, but other ranges are available on request. Confirm the specific range for your application with the manufacturer.

What is the accuracy of the MFC?

Accuracy is ±1.0% of setpoint, including linearity and repeatability. This is a reference value; verify the actual accuracy for your model.

What communication interfaces are supported?

The MFC supports RS-485 with Modbus RTU protocol. It also provides an isolated 4–20 mA analog output. Check compatibility with your system.

What are the operating pressure and temperature limits?

Operating temperature is 0–50 °C for electronics; the sensor may have a wider range. Always verify with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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accuracy:	±0.5% to ±1.0% of reading (typical)
pressure:	0 to 1000 psig (typical), up to 3000 psig available
flow rate:	0.01 sccm to 500 slm (depending on model)
temperature:	-20°C to 70°C (operating), -40°C to 85°C (storage)
repeatability:	±0.1% to ±0.25% of full scale

Precision Mass Flow Controller (MFC)

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards