Description

FCON GFM Series Gas Flow Meter

FCON GFM Series Gas Flow Meter Equipped with a mass flow sensor. Supports up to 200LM in compact size. Low pressure loss : Low loss due to simple flow path structure. Flow output signal Analog.

FCON GFM Series Gas Flow Meter is a high-precision digital thermal mass flow meter engineered for direct, accurate volumetric mass flow measurement of industrial and laboratory gases without requiring separate pressure or temperature compensation. Designed by FCON, the GFM Series utilizes capillary thermal sensing technology to deliver reliable flow metering across clean gas lines, purging systems, gas blending manifolds, and environmental monitoring equipment. Featuring dual digital ( $RS-485$ ) and analog output signals, compact stainless steel construction, and minimal pressure drop, the FCON GFM Series Gas Flow Meter provides exceptional measurement stability for automated process telemetry and quality control systems.

Technical Overview & Operating Principle

The FCON GFM Series Gas Flow Meter operates using thermodynamic capillary sensing principles to measure gas mass flow rates directly.

A fraction of the incoming process gas enters a heated capillary sensor tube while the remaining volume flows through an engineered laminar flow element (LFE) bypass. As gas moves through the capillary, it picks up heat from an upstream heating element and carries it toward a downstream sensor element.

Specifications

Parameter	Specification
Product Series	FCON GFM Series
Focus Keyword Target	FCON GFM Series Gas Flow Meter
Measurement Principle	Capillary Thermal Mass Flow Sensing
Target Media	Clean, Dry Process Gases ( $text{N}_2$ , $text{Air}$ , $text{Ar}$ , $text{O}_2$ , $text{CO}_2$ , $text{He}$ , $text{H}_2$ )
Flow Rate Range	$10 text{SCCM}$ up to $100 text{SLM}$ (Standard Liters per Minute) full scale options
Measurement Accuracy	$pm 1.0%$ Full Scale
Repeatability	$pm 0.2%$ Full Scale
Response Time	$le 1.0 text{second}$ signal output update
Max Operating Pressure	Up to $1.0 text{MPa}$ ( $10 text{bar}$ ) standard rating
Operating Temperature	$5^circtext{C to }+50^circtext{C}$ ( $41^circtext{F to }+122^circtext{F}$ )
Signal Outputs	Analog: $0text{--}5 text{VDC}, 4text{--}20 text{mA}$ / Digital: $RS-485$ Modbus
Process Connections	$1/4" text{ Swagelok / compression fittings or female NPT}$
Wetted Materials	Stainless Steel SUS304/SUS316, Viton / Fluororubber seals

Features

Robust Stainless Steel Body: Solid SUS304/SUS316 wetted construction provides durability against mild chemical exposure and mechanical shock.
Compact Form Factor: Lightweight, space-saving profile fits easily into OEM gas panels and crowded laboratory benches.

Applications

Inert Gas Consumption Tracking: Continuous monitoring of nitrogen and argon usage on process lines and heat-treatment furnaces.
Environmental & Gas Sampling Rigs: Precise monitoring of air and gas sample collection rates in emission stack samplers and ambient monitoring stations.
Analytical Instrument Carrier Lines: Stable carrier gas measurement for chromatography setups and optical spectrometer units.
Bioreactor Gas Sparging: Monitoring carbon dioxide and oxygen delivery rates in biological fermenters and cell culture vessels.

FCON GFM Series Gas Flow Meter

FCON GFM Series Gas Flow Meter Equipped with a mass flow sensor. Supports up to 200LM in compact size. Low pressure loss : Low loss due to simple flow path structure. Flow output signal Analog.

RS-485

) and analog output signals, compact stainless steel construction, and minimal pressure drop, the FCON GFM Series Gas Flow Meter provides exceptional measurement stability for automated process telemetry and quality control systems.

Technical Overview & Operating Principle

The FCON GFM Series Gas Flow Meter operates using thermodynamic capillary sensing principles to measure gas mass flow rates directly.

Parameter

Specification

Product Series

FCON GFM Series

Focus Keyword Target

FCON GFM Series Gas Flow Meter

Measurement Principle

Capillary Thermal Mass Flow Sensing

Target Media

Clean, Dry Process Gases (

text{N}_2

text{Air}

text{Ar}

text{O}_2

text{CO}_2

text{He}

text{H}_2

)

Flow Rate Range

10 text{SCCM}

up to

100 text{SLM}

(Standard Liters per Minute) full scale options

Measurement Accuracy

pm 1.0%

Full Scale

Repeatability

pm 0.2%

Full Scale

Response Time

le 1.0 text{second}

signal output update

Max Operating Pressure

Up to

1.0 text{MPa}

(

10 text{bar}

) standard rating

Operating Temperature

5^circtext{C to }+50^circtext{C}

(

41^circtext{F to }+122^circtext{F}

)

Signal Outputs

Analog:

0text{--}5 text{VDC}, 4text{--}20 text{mA}

/ Digital:

RS-485

Modbus

Process Connections

1/4" text{ Swagelok / compression fittings or female NPT}

Wetted Materials

Stainless Steel SUS304/SUS316, Viton / Fluororubber seals

Applications

Inert Gas Consumption Tracking: Continuous monitoring of nitrogen and argon usage on process lines and heat-treatment furnaces.

Environmental & Gas Sampling Rigs: Precise monitoring of air and gas sample collection rates in emission stack samplers and ambient monitoring stations.

Analytical Instrument Carrier Lines: Stable carrier gas measurement for chromatography setups and optical spectrometer units.

Bioreactor Gas Sparging: Monitoring carbon dioxide and oxygen delivery rates in biological fermenters and cell culture vessels.

FCON GFM Series Gas Flow Meter

Product Note:

Description