Flowmeters

Gas Turbine Flowmeter

For natural gas, coal gas, air and compatible industrial gases.

Gas turbine flowmeters are used for compatible gases where line size, pressure rating, connection type and flow range can be matched to the operating condition.

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Velomac gas turbine flowmeter on clean background

Where It Is Used

Application Context

Used for compatible clean gas service where gas composition, operating pressure and flow profile are known.

Natural gas metering

Industrial gas distribution

Air flow monitoring

Gas utility lines

Compatible process gas service

Selection Notes

Conditions to Confirm

A useful quotation starts with the real operating condition, not only the model name.

Media

Natural gas, Coal gas, Air, Compatible industrial gases

Flow range

Share minimum, normal and maximum flow before sizing.

Pressure / temperature

Confirm operating and design conditions.

Pipe size

Send DN, connection type and available straight pipe.

Installation condition

Note vibration, access limits, pipe layout and shutdown limits.

Output / signal

Confirm local display, 4-20mA, pulse, RS485 or other site needs.

Typical Applications

Related Site Conditions

Compare the product with nearby application scenarios before sending site details.

Gas Flow Measurement Energy Loss Visibility

Available configurations

Threaded Gas Turbine FlowmeterIntegral Flanged Gas Turbine FlowmeterTri-Clamp Sanitary Gas Turbine FlowmeterInsertion Gas Turbine Flowmeter

Gas-focused sizing

Gas flow ranges should be reviewed by line size, standard range, extended range and pressure rating.

Connection flexibility

Threaded, flanged, sanitary and insertion configurations support different line sizes and installation needs.

Output and communication options

Voltage pulse, 4-20mA and optional RS485 communication are listed for integration with site systems.

Before Quotation

What to Send

These details help Velomac recommend a suitable meter configuration and avoid a model-only quotation.

Fluid / media

Pipe size / DN

Flow range

Pressure

Temperature

Quantity

Installation details

Signal output

Related Resources

Selection Notes to Review

Application NotesIf Your Plant Does Not Trust the Flow Data, the Flowmeter Has Already FailedRead article >Signal IntegrationIf the PLC Cannot Read the Number Cleanly, the Flowmeter Project Is Not FinishedRead article >

Technical Data

Data for Configuration Review

Gas Turbine Flowmeter Technical Data

Parameter	Specification
Measuring Media	Natural gas, coal gas, air and other compatible gases
Line Size (DN) and Connection	DN4-DN50 threaded; DN15-DN200 integral flanged; DN4-DN80 tri-clamp sanitary; >= DN150 insertion
Accuracy	In-line: +/-1.0%, +/-0.5%, +/-0.2% of reading; insertion: +/-5.0%, +/-2.5%
Turndown Ratio	1:10 to 1:20
Wetted Parts Material	Stainless steel 304/316; other materials customizable on request
Process Temperature	-20 deg C to 80 deg C
Ambient Conditions	Temperature: -20 deg C to 50 deg C; relative humidity: 5% to 90%; atmospheric pressure: 86 to 106 kPa
Connection Standards	Flange: GB9113 standard; thread: BSPT male thread standard
Output Signal and Communication	Voltage pulse; 2-wire analog 4-20mA; optional RS485 interface
Power Supply	Sensor: 12V DC; transmitter: 24V DC; local display: 3.0V lithium battery
Transmission Distance	<= 1000m
Cable Entry	M20 x 1.5
Hazardous Area Approvals	Intrinsically safe: Ex ib IIB T4; flameproof: Ex d IIB T6
Enclosure Rating	IP65

Selection note: Confirm final configuration against media, flow range, pressure, temperature and site details.

Selected Gas Turbine Flow Range

Line Size (DN)	Standard range (m3/h)	Extended range (m3/h)	Connection
20	2.2-25	4-40	Flanged
40	5-50	6-60	Flanged threaded
80	20-400	10-160	Flanged
100	32-650	13-250	Flanged
150	50-1000	80-1600	Flanged
200	130-2500	50-1000	Flanged
300	200-4000	320-6500	Flanged

Selected flow ranges are shown for orientation. Final sizing depends on media, flow range, pressure, temperature and site details.

Selection support

Send site details for a better recommendation.

Share the fluid, pipe size, flow range, pressure, temperature, quantity, installation details and signal output needs.

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