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2 Inch Turbine Flow Meter: High-Accuracy Mechanical Fuel Custody Transfer
Quick Answer: The 2 inch turbine flow meter from Silver Instruments fits DN50 fuel lines and delivers plus or minus 0.5 percent accuracy for diesel and gasoline custody transfer. The meter gives a direct reading mechanical totalizer and a pulse output for flow computers. Use this meter for fuel depots, truck loading skids, marine fuel transfer, and generator day tanks.
Silver Automation Instruments is a flow meter supplier based in Nanjing China. We supply a 2 inch turbine flow meter for high accuracy mechanical fuel custody transfer. The meter body is stainless steel 316. The rotor uses tungsten carbide bearings. The local mechanical register records total volume even if the loop power drops. That matters when you handle diesel, gasoline, kerosene, or light fuel oil.
This 2 inch turbine flow meter is not a compact plastic water meter. The design is custody transfer grade for fuel lines. We quote this meter to fuel distributors, mining sites, marine fuel operators, and small refineries across Southeast Asia, Oceania, Latin America, Africa, and the Middle East.
What This 2 Inch Turbine Flow Meter Does
The DN50 turbine meter measures fuel flow from 6 to 60 cubic meters per hour. Accuracy is plus or minus 0.5 percent of reading across the normal range. Repeatability is plus or minus 0.1 percent. The 8 digit mechanical totalizer gives a local readout. A pulse output sends volume pulses to a remote flow computer. For custody transfer, the pulse output can be totalized on a batch controller or a small PLC.
We have seen this setup on customer sites many times. A diesel loading skid in Surabaya uses one 2 inch turbine flow meter per bay. The operator reads the mechanical register after each truck fill. The same pulse signal goes to a back office system. This dual record reduces complaints about lost batch data.
Key Specifications for DN50 Fuel Lines
Body material is stainless steel 316. Rotor material is stainless steel 430 or CD4MCu depending on the fuel. Bearings are tungsten carbide for long life in diesel. Process connection is a 2 inch ANSI 150 flange or a DN50 PN16 flange. Flow range is 6 to 60 cubic meters per hour for diesel with a viscosity around 2 to 5 cP. Pressure rating is 16 bar at 20 °C. Temperature range is minus 20 to 80 °C. Output is an open collector pulse signal and an optional 4-20 mA HART signal. The mechanical register is an 8 digit non resettable totalizer. A resettable batch register is optional. Optional ATEX Zone 1 approval supports installation in hazardous fuel loading areas.
These numbers are not guesses. We quoted this same 2 inch turbine flow meter for a fuel distributor in Vietnam last year. The line ran at 18 cubic meters per hour. The buyer needed custody transfer accuracy and a local totalizer for the truck driver. The meter shipped with a PT100 probe port for temperature correction. The customer kept the port plugged at first start.
Applications in Southeast Asia, Oceania, Latin America, Africa and the Middle East
This 2 inch turbine flow meter fits fuel transfer skids, truck loading racks, marine fuel lines, mining day tanks and diesel generator fuel loops. We work with distributors in Malaysia, Indonesia, Vietnam, Thailand, Australia, New Zealand, Chile, Peru, Nigeria, Kenya, Saudi Arabia and the UAE. Each region has different fuel standards. The DN50 body and stainless steel wetted parts cover most light fuel oil applications.
In practice, a mining site in Western Australia uses this meter on a diesel bowser. The flow rate varies from 8 to 22 cubic meters per hour. The mechanical register lets the site supervisor log volume without a laptop. A fuel depot in Jeddah uses two meter
Why a Mechanical Register Still Matters for Fuel Custody Transfer
Engineers often skip complicated digital setup on fuel skids. The mechanical totalizer works without external power. The register gives a local audit trail that drivers and site operators can read. The pulse output still supports remote totalization. That means you get two records from one flow meter.
Here is the thing. A power failure at a remote fuel depot can wipe a digital batch if the controller has no battery backup. The mechanical wheel keeps counting. Many fuel distributors in Africa and the Middle East still ask for a mechanical fuel custody transfer meter. They need the physical number as a backup.
Installation on a 2 Inch Fuel Line
Use 10 pipe diameters of straight run upstream and 5 pipe diameters downstream. Install a strainer or filter before the flow meter. Use an air eliminator if the fuel tank can pull vapor during pump start. Keep the register housing vertical. Install a back pressure valve downstream to prevent vapor breakout in gasoline lines. The turbine rotor needs a full pipe. Do not let the pump run dry against the meter.
We send a simple wiring note with each meter. The pulse output is an open collector. Use a 24 V DC supply and a pull up resistor between 1 kohm and 2.2 kohm. The 4-20 mA HART option uses a 2 wire loop. If the flow computer is more than 30 meters away, use shielded twisted pair cable.
How to Get a Quote from Silver Instruments
Send us your pressure in bar, temperature in °C, pipe size in DN, and flow range in cubic meters per hour. Tell us the fuel type. Diesel, gasoline, kerosene and light fuel oil are common. We will confirm the 2 inch turbine flow meter material, flange standard, register type and signal output. We reply from our Nanjing office within one working day.
Silver Automation Instruments
Tel: +86-135-1213-1526
Whatsapp: 86-135-12131526
WeChat: +86 13512131526
FAQ 2 Inch Turbine Flow Meter Fuel Custody Transfer
What accuracy can a 2 inch turbine flow meter achieve for fuel custody transfer?
Plus or minus 0.5 percent of reading is standard for a 2 inch turbine flow meter in diesel and gasoline service. Repeatability is plus or minus 0.1 percent. Some sites run the same meter for internal transfer without a prover.
Does the mechanical register work during a power failure?
Yes. The 8 digit mechanical totalizer runs from the rotor. The register does not need external power. The pulse output may stop, but the local volume total keeps increasing.
Can this meter handle diesel and gasoline?
Yes. Stainless steel 316 body and tungsten carbide bearings cover diesel, gasoline, kerosene and light fuel oil. For gasoline, install a back pressure valve downstream to reduce vapor breakout.
What signal output goes to a flow computer?
The standard output is an open collector pulse. Most flow computers and batch controllers use this signal directly. An optional 4-20 mA HART output is available for DCS or SCADA inputs.
How much straight pipe does a 2 inch turbine flow meter need?
Plan for 10 pipe diameters upstream and 5 pipe diameters downstream. For a DN50 line that means 500 mm upstream and 250 mm downstream. Use a strainer and avoid elbows directly before the meter.
Send a Request for a 2 Inch Turbine Flow Meter Quote
Tell us your fuel type, flow range, pressure in bar, temperature in °C, and pipe size. We will send a quotation with a data sheet. Contact Silver Automation Instruments at Tel: +86-135-1213-1526, Whatsapp: 86-135-12131526, WeChat: +86 13512131526.