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Jet Fuel Flow Meter DN80: Optimizing Accuracy in High-Velocity Lines
Quick Answer
For a DN80 jet fuel line running at high velocity, a Coriolis mass flow meter holds accuracy within ±0.10% of rate without needing density correction or long straight pipe runs. This meter measures mass directly, so you avoid fuel temperature compensation and mechanical wear issues that plague turbine devices. Silver Automation Instruments supplies DN80 Coriolis meters with ATEX Zone 1, 4-20 mA HART, and zero-moving-part design for refueling depots and hydrant systems.
Why High-Velocity Jet Fuel Challenges Common Meter Types
Fuel farms in the UAE, hydrant carts in Malaysia, and tanker loading arms in Nigeria often move Jet A-1 or JP-8 through DN80 pipes at speeds between 8 and 15 m/s. At those velocities, a standard turbine meter bearing life can drop below 18 months. The rotor generates swirl and the meter factor shifts weekly. Positive displacement meters add pressure drop and are sensitive to particles. Ultrasonic meters need clean signal paths and can lose lock if the flow profile distorts. In practice, most engineers skip a full flow conditioner retrofit because it adds cost and eats axial length they do not have on a packed skid.
How a DN80 Coriolis Meter Removes These Errors
Silver Instruments retrofitted a jet fuel terminal in Vietnam where seven turbine meters on DN80 loading arms showed drift of 0.6 % within six months. We replaced them with single-straight-tube Coriolis sensors. The mass flow reading stayed within a 0.08 % repeatability band for two years. There was no bearing to replace, no strainer cleaning, and no meter proving cycle extended beyond the annual check. Because a Coriolis sensor measures mass directly, you do not need a separate densitometer or a temperature-compensated batch controller. The meter outputs mass (kg or tonnes) and volume at reference 15 °C via its onboard calculator. That alone saves a fuel depot about 1 200 USD per year in avoided software and calibration hassle on each meter run.
Here is the thing. On jet fuel, a Coriolis meter is also immune to air slugs that show up after a filter change or pump start. A turbine meter can overspeed in those moments. A PD meter can block. The Coriolis tube just continues to vibrate and measures two-phase flow with a diagnostic flag. You get a repeatable total count instead of a suspected batch error.
Critical Installation Notes for Jet Fuel Service
Most engineers do not think about static electricity buildup on nonconductive fuel. We have seen char marks on PTFE liners in other meters. With a Coriolis meter, you must install a dedicated ground strap between the meter body and the pipe flange on both ends. Use a braided copper strap rated for the Zone 1 area. This prevents discharge sparks without adding a grounding ring. Mount the meter with the flow tubes pointing down if the line runs liquid f
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Ordering Data and Typical Specs
A jet fuel DN80 Coriolis meter from Silver Automation Instruments covers flow rates from 2 t/h up to 180 t/h with a 316L stainless steel wetted part and full-bore design. The pressure drop stays below 0.3 bar at 120 t/h. Ex certifications include ATEX/IECEx Zone 1 Ex d ia IIC T4…T3 and cCSAus for North American projects. Signal output is standard 4-20 mA HART plus a pulse output that can drive a remote batch controller. You can also request Modbus RTU if your terminal uses a PLC-based supervisory system. We build each meter with traceable calibration on a gravimetric rig against ISO 17025. The standard turndown is 20:1 and accuracy is 0.10 % of rate for mass flow on Jet A-1.
To receive a technical proposal with lead time and sea freight to your port, send us your flow range, operating temperature (°C), pipe pressure rating (bar or lb), and DN size. Our application engineers will select the right sensor body and transmitter. Use the request form at flow-meter.com.au or type your data into an email. We reply with a priced offer and dimensional drawing within one working day.
Frequently Asked Questions
What is the most accurate flow meter for jet fuel in a DN80 high-velocity line? A Coriolis mass flow meter achieves ±0.10 % of rate and does not drift with velocity changes. This makes it ideal for custody transfer and fuel accountability at hydrant pits.
Can I use a turbine flow meter on a DN80 jet fuel line? You can, but you will need at least 10D upstream straight run, regular meter factor checks, and a plan to replace bearings every one to two years. Most operators switch to Coriolis after the second bearing failure.
Does the jet fuel meter need ATEX certification? Yes. Any meter installed in a fuel terminal zone requires ATEX or IECEx certification for Zone 1 or Zone 2. Silver Instruments supplies fully certified DN80 Coriolis meters without long delivery penalties.
What output signals does the DN80 Coriolis meter provide? The standard configuration is 4-20 mA HART with pulse. Modbus RTU is available as an option. The HART signal carries mass flow, density, and temperature from a single transmitter.
How do I get a price for a DN80 jet fuel flow meter? Send your pressure (bar), temperature (°C), pipe size (DN), and flow range to our team. We respond with a full quotation, drawing, and delivery schedule within one business day.
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