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Tank Accessories
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Digital Flow Meters
Digital fuel flow meters count the amount of fluid that has been dispensed per transaction and in total, which is showed to you on a digital display. Digital flow meters are generally more expensive than their mechanical flow meter counterparts, but offer a more compact solution to measuring the quantity of dispensed fuel.
To ensure accuracy of the flow meter, please check the operating flow rates of the meter against your system. If you would like any advice or have any questions please contact our sales team.
FAQs About Digital Flow Meters
What is a digital flow meter and what is it used for?
A digital flow meter is an electronic device that measures the volume or rate of liquid passing through a pipe or hose, displaying the reading on a built-in screen. They're commonly used with heating oil, diesel, AdBlue, and water to track dispensing accurately, removing the guesswork from every transfer whether you're filling a vehicle, monitoring tank usage, or billing customers for fuel.
Which liquids are digital flow meters compatible with?
Compatibility depends on the meter's internal seals and construction material. Most diesel and heating oil meters use aluminium or nylon bodies with Viton seals, which resist petroleum-based fuels. AdBlue requires a dedicated meter, as standard fuel meters will corrode rapidly on contact with urea solution. Always check the manufacturer's fluid compatibility list before fitting.
How accurate are digital flow meters compared to mechanical ones?
A good digital flow meter typically achieves ±0.5% - 1% accuracy, which is broadly comparable to a quality mechanical meter but with a clearer, easier-to-read display and the ability to reset the counter between fills. Digital models tend to hold their calibration longer under regular use, whereas mechanical meters lose calibration as their parts wear.
Do I need any tools or specialist knowledge to install a digital flow meter?
Most digital flow meters are designed for straightforward inline installation between the pump outlet and delivery nozzle using BSP threaded connections. A pair of adjustable spanners and some PTFE tape is usually all you need. If your setup involves a suction pump or high-flow transfer system, check the meter's maximum flow rate before buying to confirm it won't restrict output.
What flow rate should I look for when choosing a digital flow meter?
Match the meter's rated flow range to your pump's output. Most standard fuel pumps move around 40-70 litres per minute, with some larger pumps moving 90-140 litres per minute. Fitting an undersized meter creates back pressure and inaccurate readings, while an oversized meter running below its minimum threshold will also measure poorly.
Can a digital flow meter be used outdoors or in a tank bund?
Yes, provided the unit carries an appropriate IP (Ingress Protection) rating. Look for at least IP54 for sheltered outdoor use; IP65 or higher is preferable if the meter will be exposed to rain or wash-down water. A weather-resistant housing protects the electronics and extends service life in damp bund environments.
How do I reset or zero the counter on a digital flow meter?
On most digital flow meters, a single button press resets the batch counter to zero while keeping the cumulative total intact. The cumulative total typically requires a held button combination or a menu step to reset, preventing accidental data loss. Refer to the meter's instruction sheet for the exact sequence, as it varies between brands.
What maintenance does a digital flow meter need?
Routine maintenance is minimal. For diesel or heating oil, leave a small amount of clean fluid in the meter to prevent seal drying. For AdBlue meters, flush with clean water after each session to stop urea crystallising inside the body. Inspect the seals and screen annually, and replace the battery when the display dims or flickers.
Will a digital flow meter work with a gravity-fed tank as well as a pump?
It can, but gravity-fed systems produce lower, less consistent flow rates that may fall below some meters' minimum measuring threshold, typically around 10–20 LPM. If your gravity feed runs faster than that, a digital meter will work reliably. For slow gravity feeds or long pipe runs with significant head loss, measure your actual flow rate first before committing to a specific meter model.
