Turbine Gas Flow Meter Supplier in Bangladesh
Smart Measurement and TECHANGE turbine gas flow meters for natural gas, LPG and other clean gases, from 25 to 300 mm, supplied with installation and after-sales support by Techno Bangla Creation.
What Is a Turbine Gas Flow Meter?
A turbine gas flow meter measures gas volume by letting the flowing gas spin a bladed rotor inside the pipe. Rotor speed rises in proportion to gas velocity, and a sensor counts the turns as electrical pulses. The meter converts those pulses into flow rate and total volume for natural gas, LPG and other clean gases.
A turbine gas flow meter is not a thermal mass flow meter. A turbine meter has a spinning rotor and reads volume, while a thermal meter has no moving parts and reads mass flow from heat transfer. For that type, see our thermal gas flow meter. For steam, gas and air, see our vortex flow meter, and for diesel and other liquids, our oval gear flow meter.
- Turbine-type gas meter in a stainless steel body
- Line sizes from 25 to 300 mm
- 4 to 20 mA and RS485 Modbus output on 24 V DC
- Used for natural gas, coal gas, liquefied gas and light hydrocarbon gas
- Installation and after-sales support in Bangladesh
Turbine Gas Flow Meter Specifications
- Type
- Turbine type gas flow meter
- Size
- 25 ~ 300 mm (about 1 ~ 12 inch)
- Temperature
- -20 ~ 80 °C (about -4 ~ 176 °F)
- Max. Pressure
- 1.6 MPa (16 bar, about 232 psi)
- Body Material
- Stainless steel (SS)
- Accuracy
- ±1%
- Signal Output
- 4 ~ 20 mA, RS485 Modbus
- Power Supply
- 24 V DC
- Gases
- Natural gas, coal gas, liquefied gas, light hydrocarbon gas
- Brand
- Smart Measurement Co., Ltd, TECHANGE
- Origin
- USA, China
Exact size, flow range, accuracy band, pressure rating, display and temperature-pressure correction depend on the model you select. Confirm on the datasheet of the exact model whether ±1% applies to the reading and over which flow range. Send us your duty point and our engineers will confirm the right meter.
Turbine vs Thermal Mass vs Vortex Gas Flow Meters
Three common ways to meter gas. Each suits different lines.
| Feature | Turbine | Thermal Mass | Vortex |
|---|---|---|---|
| Working principle | Gas spins a bladed rotor. Rotor speed gives volume flow. | A heated sensor loses heat to the gas. Heat loss gives mass flow. | A blunt body sheds vortices. Vortex frequency gives gas velocity. |
| Moving parts | Yes: rotor and bearings | None | None |
| What it reads | Volume at line conditions. Temperature and pressure correction gives standard volume. | Mass flow or standard volume, with no separate pressure or temperature compensation | Volume. Compensation is advised when temperature and pressure change a lot. |
| Turndown (typical) | About 10:1, some models 20:1 | Very wide, often 100:1 or more as reported | Moderate |
| Dirty or wet gas | Needs clean, dry gas and an upstream filter | Reported to clog and drift in wet or dirty gas | Reported to tolerate some contamination |
| Straight pipe | About 10D upstream and 5D downstream (AGA 7 guidance) | Depends on model | Reported to need long straight runs |
| Maintenance | Keep gas clean. Bearings wear over time. | Keep the sensor clean | Low, no moving parts |
| Temperature (our model) | -20 ~ 80 °C | -20 ~ 250 °C (insertion type) | 80 ~ 250 °C |
| Best fit | Clean natural gas or LPG lines with steady flow | Low flows, wide range, compressed air, biogas, sub-metering | Steam, and gas or air at higher temperature |
General values are typical figures from public engineering guidance and manufacturer notes, and the temperature row follows our own product pages. Always confirm against the datasheet of the exact model. Ultrasonic and rotary (Roots) meters also serve gas metering, and large brands such as Honeywell Elster publish turbine accuracy as a band, for example ±1% from 0.2 Qmax to Qmax and ±2% below that on their TRZ2 meter. Ask any supplier for accuracy over your full flow range.
How Does a Turbine Gas Flow Meter Work?
- Gas Enters the MeterGas flows into the meter body. Many designs use a flow straightener to guide it onto the rotor.
- Rotor SpinsThe gas pushes the bladed rotor. Faster flow makes it turn faster.
- Sensor Counts the TurnsA pickup sensor sends a pulse as each blade passes. The pulses per unit volume form the meter's K-factor.
- Electronics Calculate FlowPulse rate becomes flow rate and pulse count becomes total volume. Some models also correct to standard conditions.
- Signal Reaches Your SystemA 4 to 20 mA or RS485 Modbus signal carries the reading to a PLC, DCS or energy monitor.
Why Use a Turbine Gas Flow Meter?
A flow record on your own gas line shows where the gas goes.
- Rated at ±1% accuracy, within the range of about ±0.25 to ±1% commonly quoted for gas turbine meters
- Turndown of about 10:1, with some turbine meters reaching 20:1, and range improves as gas density rises
- Stainless steel body in sizes from 25 to 300 mm for inline fitting
- Digital 4 to 20 mA and RS485 Modbus output on 24 V DC for PLC and monitoring systems
- Turbine metering is a long-established method for natural gas, covered by standards such as AGA Report No. 7 and EN 12261. Confirm certification of your exact model.
- Local engineering and after-sales support from Techno Bangla
Which Gas Flow Meter Fits Your Line?
Choose a Turbine Meter When
- The gas is clean and dry, such as natural gas or LPG
- Flow stays inside about a 10:1 range and does not pulsate
- Line size is 25 to 300 mm, pressure is up to 16 bar and gas temperature is -20 to 80 °C
- You can give the meter about 10 pipe diameters upstream and 5 downstream
- You want volume flow with a digital output to your PLC
Choose Another Meter When
- Flow is very low or swings widely. See our thermal gas flow meter.
- The gas is wet or dirty, or the line pulsates near a reciprocating compressor
- Steam is present, or the gas is hotter than 80 °C. See our vortex flow meter.
- You are measuring liquid. See our oval gear flow meter or electromagnetic flow meter.
- Pressure is above 16 bar, or you need a certified fiscal meter. Ask us about suitable options.
Where Are Turbine Gas Flow Meters Used?
Any pipe that carries clean gas at a fairly steady flow.
- Natural Gas Lines
- LPG and Light Hydrocarbon Gas
- Boiler Fuel Gas
- Captive Power Generators
- Textile and Dyeing Mills
- CNG and LPG Stations
- Coal Gas Lines
- Gas Sub-metering
- Industrial Process Control
How to Choose a Turbine Gas Flow Meter
Share these details with our engineers and we will recommend a suitable meter and size.
- Flow range and turndown. Note minimum, normal and maximum flow at line conditions. A turbine meter covers about 10:1 on most models, so normal load should sit well inside the range. Do not oversize, because a meter that runs near its minimum loses accuracy.
- Pressure and temperature. Gas volume changes with pressure and temperature, so ask whether you need correction to standard volume. Our meter is rated to 16 bar and -20 to 80 °C. Line pressure in Bangladesh can swing with supply conditions, so check your lowest and highest values.
- Gas cleanliness. Contamination of the rotor bearings is reported as a leading cause of turbine meter failure. Fit a filter or strainer upstream, and keep liquid droplets and dust out of the line.
- Pipe layout. Plan about 10 pipe diameters of straight pipe upstream and 5 downstream, or use a flow conditioner. Avoid pulsating flow, and raise line pressure slowly at start-up so the rotor is not over-speeded.
- Accuracy statement, output and site rules. Ask for accuracy across the whole flow range and a calibration certificate. Confirm 4 to 20 mA or RS485 Modbus wiring to your PLC, the 24 V DC supply, and whether your area is classified as hazardous and needs an Ex-rated meter.
Why Does Gas Metering Matter for Bangladesh Industry?
Natural gas supplied about two-thirds of Bangladesh's primary energy in 2021, according to a published report. Titas Gas, the largest distributor, was reported to serve more than 5,400 industrial consumers and about 1,750 captive power plants. Studies of industrial gas use also find textile and leather units among the biggest users for process heat and captive power.
Supply is tight, and trade bodies recently asked for fair zonal rationing and adequate line pressure for factory machines. A meter on your own gas line lets you track use by boiler, generator or dyeing line and spot waste early. The distributor's meter remains the billing reference. For low-flow sub-metering, see our thermal gas flow meter.
Installation and After-Sales Support
Techno Bangla Creation supplies industrial equipment together with installation, commissioning and after-sales support for factories, businesses and organizations across Bangladesh. Our team is based in Mohakhali, Dhaka.
For a turbine meter, clean the pipe before fitting, fit a filter upstream, mount the meter without pipe stress and pressurize slowly. Follow the datasheet of your exact model, and have a licensed gas contractor connect the line. Send your gas details and we will recommend a suitable meter. Browse all flow meters on our site.
Frequently Asked Questions
What is a turbine gas flow meter?
A turbine gas flow meter measures gas volume by letting the flowing gas spin a bladed rotor inside the pipe. Rotor speed rises in proportion to gas velocity, and a sensor counts the turns as electrical pulses. The meter converts those pulses into flow rate and total volume for natural gas, LPG and other clean gases.
How does a turbine gas flow meter work?
Gas flows through the meter and pushes a bladed rotor, which turns faster as flow rises. A pickup sensor counts the blades as they pass and sends pulses to the electronics. Each pulse stands for a known volume, so pulse rate gives flow rate and pulse count gives total volume. The reading leaves as 4 to 20 mA or RS485.
What size, pressure and temperature range do you supply?
Our turbine gas flow meters cover 25 to 300 mm line sizes, pressure up to 1.6 MPa (16 bar) and gas temperature from -20 to 80 °C. Accuracy is listed at ±1%, with 4 to 20 mA and RS485 Modbus output on a 24 V DC supply. Exact limits depend on the model, so we confirm the size from your duty point.
How accurate is a turbine gas flow meter?
Our turbine gas flow meter is listed at ±1%. Gas turbine meters are generally quoted between about ±0.25% and ±1% of reading, and accuracy often varies across the flow range. One major brand, for example, states ±1% at upper flows and ±2% at low flows. Ask for the accuracy band over your own flow range.
Turbine vs thermal mass vs vortex: which gas flow meter should I choose?
Choose a turbine meter for clean, dry gas with steady flow. A thermal mass meter suits low flows and very wide range, and a vortex meter suits steam or hotter gas. Tell us your gas, pressure, temperature and flow range, and we will recommend one.
How much straight pipe does a turbine gas flow meter need?
Common guidance, such as AGA Report No. 7, calls for at least 10 pipe diameters of straight pipe upstream and 5 downstream. With a flow conditioner, about 5 diameters are kept between conditioner and meter. Elbows or valves near the meter need more. Follow the datasheet of the exact model, and send us a sketch of your pipework.
Is a turbine gas flow meter suitable for natural gas lines in Bangladesh?
Yes, when the meter matches your gas, pressure, temperature and flow range and the gas is clean and dry. Line pressure can swing, so size for your lowest and highest flow, fit a filter upstream and avoid pulsating flow. Keeping the gas clean protects the rotor bearings. Our engineers check these points during selection.
How much does a turbine gas flow meter cost in Bangladesh?
Price depends on line size, pressure rating, outputs and whether you need temperature and pressure correction. Send your gas type, line size, operating pressure and temperature, and minimum, normal and maximum flow to our engineers by phone or email. We reply with a free quotation. Photos of the pipe layout help.
