『Flow Meter Tokico 3 Inch Specifications: High-Volume Industrial Fuel Oil Transfer Sizing』Related information(flow rotameter|digital flow meter|balo meter|hydraulic flow meter|volumetric meter|positive displacement meter|pitot tube flow meter|displacement meter|cfm meter|variable area flow meter|inline flow meter|differential pressure flow meter|calibrated flow meter|velocity meter|paddle wheel flow meter|oval gear flow meter|anemometer hvac|multiphase flow meter|doppler flow meter|thorpe tube flowmeter|heat flow meter)
Flow Meter Tokico 3 Inch Specifications for High Volume Industrial Fuel Oil Transfer Sizing
Quick Answer: A Tokico 3 inch flow meter fits DN80 fuel oil lines and is often used for 20 m3/h to 120 m3/h transfer of diesel, light fuel oil, or heavy fuel oil. For industrial high volume fuel oil transfer, confirm viscosity, line pressure, and flow range before you select a positive displacement meter. Silver Automation Instruments supplies similar oval gear fuel oil flow meters with pulse output and 4-20 mA options for these duties.
We see Tokico 3 inch meters on fuel oil loading skids, marine fuel transfer lines, and boiler house day tank filling systems. Engineers ask us for replacement specs because the original nameplate is worn or the plant is switching suppliers. Here is the practical sizing and specification detail you need.
What the Tokico 3 Inch Flow Meter Handles
A 3 inch Tokico positive displacement meter is usually installed on DN80 pipes. In practice, the working flow range depends on the fuel type. For diesel with viscosity around 3 cP to 6 cP, the meter often covers 30 m3/h to 90 m3/h. For light fuel oil at 20 cP, the maximum flow drops. For heavy fuel oil at 50 cP or higher, we tell customers to limit velocity and check pressure drop.
Most Tokico 3 inch units we have replaced or quoted for use a cast iron or steel body. End connections are typically JIS 10K or ANSI 150 flanges. The mechanical register shows total flow and batch total. Some models have a pulse transmitter for PLC or remote display.
Key Specifications You Should Confirm
Most engineers skip this part. Do not size a 3 inch fuel oil meter on line size alone. You need five values: actual flow range, operating pressure, oil viscosity, operating temperature, and output signal. For Tokico 3 inch fuel oil meters, typical specifications to check are flow range 20 m3/h to 100 m3/h, pressure rating 10 bar or 20 bar, temperature rating 60 C or 120 C, and accuracy plus or minus 0.5 percent of reading depending on model.
If your transfer pump is a positive displacement pump, flow may pulsate. You may need an air eliminator or strainer upstream. If the meter is used for custody transfer or internal accounting, ask for a calibration certificate and pulse output scaled to 0.1 or 1 litre per pulse.
Recommended Silver Instruments Replacement
For customers who cannot get a Tokico spare or need a lower cost alternative, we recommend our oval gear flow meter for fuel oil in 3 inch DN80 size. The Silver Instruments oval gear fuel oil meter works for diesel, biodiesel, light fuel oil, and heavy fuel oil with viscosity up to 1000 cP depending on the model. Typical specs for a DN80 oval gear flow meter are flow range 20 m3/h to 100 m3/h, pressure up to 40 bar, temperature up to 150 C, and accuracy plus or minus 0.5 percent for oil with viscosity above 5 cP.
We have supplied a paint manufacturer in Southeast Asia with a 3 inch oval gear meter for solvent and fuel oil transfer. The plant used 4 pumps running at 25 m3/h per line. The pulse output fed a batch controller. Last year a customer in Vietnam asked us for a Tokico 3 inch replacement on a marine diesel line. We asked for pipe size, viscosity, and flow range. The final meter shipped with ANSI 150 flanges and a
_600x400.jpg)
Sizing Rules for High Volume Fuel Oil Transfer
For a 3 inch line, typical fuel oil velocity should stay between 1.5 m/s and 4 m/s. At 2 m/s, a DN80 pipe handles about 36 m3/h. At 4 m/s, it handles about 72 m3/h. For short loading lines and low viscosity diesel, some engineers allow 5 m/s. For heavy fuel oil above 50 cP, keep velocity under 2 m/s to avoid high pressure drop.
Do not oversize. A 3 inch meter on a small generator day tank line that only runs 2 m3/h will have poor repeatability. In that case, use a DN25 or DN40 oval gear meter. If the line runs 60 m3/h to 120 m3/h, check the meter maximum rating. Some 3 inch positive displacement meters max out near 100 m3/h.
Installation Notes and Output Options
Install a Y type strainer upstream of the meter. For diesel fuel, use a 40 mesh strainer. For heavy fuel oil, use a 20 mesh strainer with heat tracing if the oil solidifies. Mount the meter so it remains full of liquid. Air in the line causes over registration. An air eliminator is common on truck loading racks and marine bunker lines.
Output options for the Silver Instruments 3 inch fuel oil meter include pulse output, 4-20 mA, or a mechanical register. The pulse output is the easiest for PLC integration. One pulse per litre is standard. We can also scale to 0.1 litre per pulse for small batches. If the site runs in a hazardous area, tell us the zone and gas group. We can quote an ATEX Zone 1 rated pulse transmitter for fuel oil service.
How to Get a Quote
Send us four values: fuel type and viscosity in cP, minimum and maximum flow rate in m3/h or L/min, operating pressure in bar, and operating temperature in C. Also tell us the pipe size and flange standard. If you are replacing a Tokico 3 inch meter, send a photo of the nameplate. We will check the face to face dimension and flange drill pattern before quoting.
Contact Silver Automation Instruments at:
Tel: +86-25-68650347
Whatsapp: +86-25-52155837
WeChat: +86 15365082610
FAQ
What is the typical flow range of a Tokico 3 inch fuel oil meter?
For diesel and light fuel oil, the common working range is 20 m3/h to 100 m3/h. Heavy fuel oil reduces the maximum flow due to viscosity and pressure drop.
Can Silver Instruments supply a direct replacement for a Tokico 3 inch meter?
Yes. We need the original flow range, flange standard, pressure rating, and output signal. We can match face to face dimensions in many DN80 positive displacement meter replacements.
What output signal is best for fuel oil transfer?
Pulse output is the most common for batch control and PLC totalizing. 4-20 mA is better for continuous flow rate monitoring. We can provide both on one meter if needed.
What accuracy can I expect from a 3 inch oval gear fuel oil meter?
For oil viscosity above 5 cP, the Silver Instruments DN80 oval gear meter accuracy is plus or minus 0.5 percent of reading. At lower viscosity below 3 cP, use a smaller meter or a turbine meter because slip increases.
Do I need a strainer before the fuel oil meter?
Yes. A strainer protects the oval gears from weld slag, rust, and debris. For diesel use a 40 mesh Y strainer. For heavy fuel oil use a 20 mesh strainer.
Hot News
Related AD
