Diesel Oil Flow Meter 2 Inch Fleet Fueling Station Specs

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Diesel Oil Flow Meter 2 Inch for Fleet Fueling Stations – Specs & Selection Guide

Quick Answer: A 2-inch diesel oil flow meter for a fleet fueling station needs a DN50 connection, 0.5% accuracy or better, and a flow range of roughly 20 to 200 L/min. Oval gear meters dominate this application because they handle low to medium flow rates with excellent repeatability. Silver Automation Instruments supplies ATEX-certified oval gear meters with pulse or 4-20 mA HART output, standard in cast iron or stainless steel, ready to ship to Southeast Asia, the Middle East, Australia, and Latin America.

Why a 2-Inch Meter Fits Most Fleet Fueling Skids

A logistics company in the Philippines running 40 trucks per shift asked us for a meter that would not slow down their refueling process. Their target was to fill a 300-liter tank in under three minutes. The math pointed straight to a 2-inch meter. A DN50 oval gear meter easily delivers 150 to 200 liters per minute, which covers most light-duty and heavy-duty fleet vehicles. Smaller 1-inch or 1.5-inch meters choke the flow and extend fill time. Larger 3-inch meters cost more and require bigger pipework, which fleet depots rarely have. In practice, a 2-inch diesel flow meter hits the sweet spot for total cost of ownership.

Core Specs You Should Check Before Ordering

Most engineers skip this part until a meter fails on site. We have seen installations in Vietnam and Chile where a meter was selected by price alone, and six months later accuracy drifted because the pressure rating was too low. A 2-inch diesel oil flow meter for a fleet fueling station must meet a few minimum specs. Flow range is 20 to 200 L/min, but check your actual peak demand. Continuous duty at 150 L/min is common. Maximum working pressure should be at least 20 bar, especially if you have a positive displacement pump. Temperature tolerance from minus 20 to 80 degrees Celsius covers outdoor fuel skids from Northern Australia to desert depots in Oman. Accuracy stays within plus or minus 0.5 percent of reading with oval gear technology. Repeatability is even tighter, often better than 0.1 percent, which matters when you bill per liter. The housing material is typically cast iron, but go for stainless steel if your diesel contains biodiesel blends above B20 or if you are in a humid coastal area like Fiji or Panama. For hazardous areas, specify ATEX Zone 1 or Zone 2 certification with Ex d IIB T4 enclosure. Silver Instruments offers the OGM series with these exact certifications, and we include a test certificate at no extra cost.

Output Signals That Make Integration Easy

A fleet fueling controller or a simple batch display needs the right signal. Pulse output is the workhorse for fuel management. A dual-channel quadrature pulse with NPN or PNP open collector can feed a PLC, and it also gives direction and flow rate. Silver Automation Instruments configures each OGM meter with a reed switch or Hall effect sensor, so you get 10 to 100 pulses per liter, depending on the register you use. For plants that already have 4-20 mA analog loops, we add a HART-enabled transmitter directly on the meter. A bus depot in Malaysia took this route last year. They connected the 4-20 mA signal to their SCADA system and now monitor real-time diesel usage across five islands. If you need Modbus RTU, we can mount a converter on the meter and map the registers for you.

Mounting Details That Prevent Surprises in the Field

Do not skip the strainer. We ship a lot of meters to mining fleets in

Diesel Oil Flow Meter 2 Inch Fleet Fueling Station Specs

Western Australia, and those sites always have fine dust. A 100-micron Y strainer right before the meter saves the oval gears from scoring. The meter itself needs no straight pipe run, which is a big advantage of positive displacement technology. You install it horizontally, but vertical flow is possible if you bleed the air. For a 2-inch connection, most fleet skids use BSP or NPT male threads. Flanged connections with ANSI 150 lb rating work better when pipe vibration is high, a case we saw with a fuel terminal in Chile that had a long cantilevered pipe. Always include an air eliminator if there is a chance the tank runs dry or the pump introduces air pockets, because air leads to inaccurate readings and faster wear.

Real-World Installation Notes from Customer Sites

Here is the thing: a meter that looks perfect on a datasheet can fail fast if nobody checks the diesel viscosity and temperature at startup. In a Sudan fuel depot, morning diesel temperature was 5 degrees Celsius, and viscosity jumped. The oval gear meter handled it fine, but the small 24 VDC power supply could not drive the pulse output reliably. We helped them switch to a 220 VAC powered version with an internal amplifier. Another customer in Indonesia used a meter without a local display to save cost. Six months later they needed a mechanical totalizer for manual reconciliation during a card system outage. Since then, we always recommend at least a dual display: mechanical register plus digital LCD with batch reset. For Silver Instruments OGM meters, this dual display is a standard option, and it saves a lot of headach later.

Frequently Asked Questions

Can the meter handle diesel with biodiesel blends? Yes, up to B20 standard seals work fine. For B30 to B100, specify FKM seals and stainless steel internals. Silver Instruments ships meters with these options pre-configured.

What is the lead time for a 2-inch oval gear diesel meter with ATEX? Most configurations ship within 10 working days from our warehouse in China. ATEX-certified units may add 5 days for documentation review. Express freight to the Middle East and Southeast Asia takes 3 to 7 days.

Do I need to recalibrate the meter often? Oval gear meters hold calibration extremely well with clean diesel. We recommend a field verification every 12 months using a master meter or a prover. Silver Instruments can supply a portable calibration rig if your site is remote.

Can I use this meter for gasoline or kerosene as well? Yes, but you must specify the fluid during ordering. Gasoline has lower viscosity, so the meter clearances are slightly different. We build the OGM with tight clearances for low-viscosity fuels to maintain accuracy.

Does the meter come with a MID or local weights and measures approval? We can supply meters with certificate of conformance to OIML R117 for many countries. For Australia, we work with NMI-approved meter bodies. Mention your local regulation when you enquire.

Next Step – Get a Quote with the Right Specs

Send us your fuel type, pressure in bar, temperature range in Celsius, pipe size DN, and maximum flow rate in liters per minute. We will select the exact 2-inch diesel oil flow meter for your fleet fueling station and return a fixed price within one working day. Contact Silver Automation Instruments through our website flow-meter.com.au or email the details directly. Our team has supplied fuel flow meters to depots in over 40 countries, and we stock spare parts for fast after-sales support.