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Fuel Tank Flow Meter Totalizers: Monitoring Bulk Fuel Depletion and Preventing Unauthorized Transfers
Quick Answer
A fuel tank flow meter totalizer records total volume delivered from or removed from a bulk tank. It gives you a hard number for daily fuel use and helps detect unauthorized transfers. Silver Instruments supplies oval gear flow meters with local totalizers, pulse output, and 4-20 mA HART for diesel, biodiesel, kerosene, and heavy fuel oil.
What a Totalizer Does in a Fuel Tank System
Totalizers count every liter that passes through the meter. You get a resettable batch total and a non-resettable cumulative total. This matters on generator fuel lines, day tanks, transfer skids, and remote storage tanks.
Common sites include remote mine fuel farms, marine bunker transfer lines, generator backup plants, and fuel distribution depots. In practice, most engineers do not check totalizer data until a problem appears. That is a mistake. A daily reading takes less than 5 minutes and shows you if fuel use has changed. But totalizer data only helps if someone reads it and compares it against tank level or pump runtime.
Using Totalizer Data to Prevent Unauthorized Transfers
Here is the thing. A totalizer alone does not stop theft. It gives you the baseline. You compare expected consumption against metered volume. For a 5000 L diesel tank feeding two generator sets, a normal week may be 2200 L to 2600 L. If the totalizer records 3100 L with no runtime change, something is wrong.
We have seen this on customer sites many times. A small diesel depot in Indonesia found a 15 percent weekly variance after installing a mechanical totalizer on a fuel transfer line. The driver was taking 40 L per day from an unlocked tank valve. The totalizer data gave the site manager evidence to lock the valve and add a pulse output alarm.
Which Fuel Flow Meter Works With a Totalizer
Diesel and biodiesel do not work well with electromagnetic flow meters. These fuels are not conductive enough. Choose oval gear flow meters for diesel, kerosene, and light fuel oil. For high accuracy custody transfer or heavy fuel oil, a Coriolis ma
For a DN25 diesel transfer line, the Silver Instruments oval gear flow meter with a local 8-digit totalizer is a common fit. It can handle flow rates from 2 to 200 L/min and pressure up to 40 bar. The pulse output sends data to a PLC or remote display. A 4-20 mA HART version works with existing control systems.
Field Parameters We Ask For
When you send an inquiry, include these details. Fuel type, tank size, pipe size DN15 to DN100, flow range in L/min or m3/h, operating temperature in °C, pressure in bar, and output signal. Also tell us if you need a local display, explosion proof ATEX Zone 1, or battery powered totalizer.
Send us your fuel type, pipe size, flow range, pressure, temperature, and output signal. We will recommend a meter and totalizer combination for your tank.
Contact Silver Automation Instruments for a quote. Tel: +86-25-68650347. Whatsapp: +86-25-52155837. WeChat: +86 15365082610. You can also visit flow-meter.com.au.
FAQ: Fuel Tank Flow Meter Totalizers
Can a totalizer detect slow fuel leakage? Yes. A daily totalizer log shows small unexplained decreases over time. Compare totalizer volume against pump runtime and tank level readings.
What output should I choose for remote monitoring? Pulse output is the simplest for counting volume. 4-20 mA HART gives flow rate and supports remote diagnostics. RS485 Modbus works for multi-tank systems.
Do I need a Coriolis meter for diesel? Not usually. Oval gear meters are more cost effective for diesel and light fuel oil. Use Coriolis for high value custody transfer, heavy fuels, or when you need density data.
Can I use an electromagnetic flow meter for fuel? No. Diesel, kerosene, and petrol have low conductivity. Electromagnetic flow meters need a conductive liquid. Use oval gear or Coriolis for fuel.
What pipe sizes do you supply for fuel totalizer systems? Silver Instruments supplies fuel flow meters from DN15 to DN100. Larger sizes are available on request for bulk terminal transfer lines.
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