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Flow Meter Tokico 1 Inch Manual: Sizing Compact Hydrocarbon Fluid Totalizer Hardware
Quick Answer: A 1 inch Tokico flow meter manual covers K-factor programming, register setup, and pulse output wiring for hydrocarbon fuels. For most compact hydrocarbon fluid totalizer hardware jobs, size the meter as DN25 with BSP or NPT threads, 4 to 40 L/min range, and a local display for field reading. Silver Instruments supplies a direct fit compact meter for diesel, kerosene, light oil, and solvent totalizing.
What the 1 Inch Manual Covers
Field engineers often ask us about the Tokico 1 inch flow meter manual when they inherit a skid or fuel line from an older project. The manual typically covers mechanical register settings, K-factor entry, and pulse output wiring. Most users skip the full calibration chapter. In practice, the hardware sizing matters more than the manual for a new hydrocarbon totalizer job. A one inch meter body fits a DN25 pipe. The common end connections are 1 inch NPT or 1 inch BSP. The flow range depends on viscosity. Diesel at 2 to 5 cP runs well from 4 to 40 L/min. Heavier solvent at 20 cP may need a lower top range. Check the manual for the viscosity correction curve before you set the K-factor.
Compact Hardware Sizing for Hydrocarbon Fluids
The totalizer hardware should be compact because most fuel lines sit inside a cabinet or a mobile skid. A one inch oval gear meter body is a good fit here. The sensor head adds pulse output. The display totalizer can be mounted on the meter or on a short bracket. Keep the total height under 220 mm for tight panels. Silver Instruments uses a compact design with a polycarbonate cover. The display reads total volume in liters or gallons. The pulse output goes to a PLC or a remote counter. This is the setup we see on diesel generator day tanks in Indonesia and fuel dispensing carts in Nigeria.
Key Sizing Parameters You Need
We do not need a long data sheet to quote this hardware. Send us four values and we can size a compact totalizer in one working day. The values are pressure in bar, temperature in °C, pipe size in DN, and flow range in L/min or kg/h. For a 1 inch Tokico replacement, start with these numbers. Pressure rating is usually 20 bar or 40 bar. Temperature for hydrocarbon fuels is often -10 to 60 °C. Pipe size is DN25. Flow range is 4 to 40 L/min for thin fuels. If the fluid is higher viscosity, above 50 cP, the upper flow range drops. The K-factor in pulses per liter changes with the gear set. Check the manual for the original pulse per liter value. Silver Instruments can set the display to match the existing K-factor.
Materials and Wetted Parts
Hydrocarbon service usually allows aluminum or cast iron for the meter body. For marine diesel or offshore use, choose stainless steel internals. The gears and shafts are the critical wear parts. Silver Instruments offers PPS gears with ceramic shafts for diesel. For aggressive solvents, switch to stainless steel gears. The meter body can be aluminum with a hard anodized coating. This keeps weight low. A one inch compact meter with aluminum body weighs about 3 kg. That is easy to mount on a vertical fuel line. The di
Installation and Manual Settings
Mount the meter in a horizontal line. The display should face up or sideways. Do not put the meter in a vertical line unless the manual allows it. Some compact oval gear meters work in vertical lines, but air bubbles can cause totalizer error. Install a strainer upstream. A 60 mesh strainer is enough for diesel. For heavy oil, use a 40 mesh strainer. Set the K-factor in the display. The original Tokico 1 inch manual lists a K-factor around 46 pulses per liter for thin fuel. Your value may be different. The totalizer hardware has a scaling factor. Set the display to read in liters, gallons, or kg. We can preprogram this before shipping. A customer in Vietnam ordered 12 compact totalizers for a heating oil line. We set each unit to liters and matched the pulse output to their PLC. The setup took less than half a day.
Common Failure Points
Most failures come from dirty fuel or wrong K-factor. The gears stick when sludge enters the chamber. A strainer fixes this in most cases. The display can lose total if the battery is low. Choose the 4-20 mA loop powered version if you need continuous readings. The pulse output may miss counts if the cable run exceeds 50 meters. Use shielded cable and keep the pulse wire away from motor cables. We have seen this on a fuel terminal in Chile where a long cable caused missing pulses. The fix was a shielded twisted pair. The manual never mentions this, but field wiring matters for totalizer accuracy.
FAQ
Does a 1 inch Tokico flow meter fit a DN25 pipe? Yes. The 1 inch size matches DN25. End connections are usually 1 inch NPT or 1 inch BSP. Confirm the thread standard before ordering.
What flow range should I use for diesel in a 1 inch line? For diesel at 2 to 5 cP, use 4 to 40 L/min. Higher viscosity oils need a lower upper range. Check the viscosity curve in the manual.
Can I get a compact totalizer with pulse output? Yes. Silver Instruments supplies a one inch compact oval gear meter with pulse output and a local display. The pulse can feed a PLC or a remote totalizer.
What pressure rating is standard for a hydrocarbon totalizer? The common rating is 20 bar. Some models handle 40 bar. Send the actual pressure to Silver Instruments and we confirm the right body and seals.
Can the display be set to gallons instead of liters? Yes. The display can show liters, gallons, or kg. We set the scaling before shipping. You can also change it in the field using the front buttons.
Get a Quote for a Compact Hydrocarbon Totalizer
If you need a replacement for a Tokico 1 inch meter or a new compact totalizer for fuels, send us your pressure in bar, temperature in °C, pipe size in DN, and flow range. We will reply with a quotation and a dimensional drawing. Contact Silver Instruments at Tel: +86-25-68650347, Whatsapp: +86-25-52155837, or WeChat: +86 15365082610. We ship to Southeast Asia, Oceania, Latin America, Africa, and the Middle East.
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