crude oil flow meter 2 inch

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# Crude Oil Flow Meter 2 Inch: Selection Guide for Engineers and Procurement Specialists ## Quick Answer For crude oil flow measurement on a 2 inch (DN50) line, Coriolis mass flow meters offer the highest accuracy (±0.1%) and direct mass measurement without needing temperature or pressure compensation. If your budget is tighter and you can accept ±0.5–1% accuracy, consider oval gear or positive displacement meters. Your selection depends on viscosity, flow rate range, pressure rating, and whether you need custody transfer accuracy. --- ## Why 2 Inch (DN50) Matters in Crude Oil Flow Measurement A 2 inch pipe on a crude oil line is common in gathering stations, transfer pipelines between storage tanks, and loading/unloading terminals. At Silver Instruments, we ship roughly 30% of our crude oil meters in DN50 size. Most go to customers in Nigeria, Indonesia, Brazil, and the Middle East. The challenge with crude oil on a 2 inch line is the viscosity range. One day you might pump 10 cP light crude. The next day, due to temperature drop at night in desert regions, the same oil can reach 500 cP. This viscosity swing kills the accuracy of most flow meters if you do not choose the right type. --- ## Flow Meter Options for 2 Inch Crude Oil Lines ### 1. Coriolis Mass Flow Meter (Best Accuracy) **How it works:** A Coriolis meter uses a vibrating tube. Fluid flow causes phase shift proportional to mass flow. It measures mass, density, and temperature directly. **Why for crude oil:** No moving parts means no wear from sand, water, or paraffin. It handles viscosity changes automatically because the measurement principle is independent of fluid properties. **Real specs from our catalog:** - crude oil flow meter 2 inch

Model: Silver MF200 series - Size: DN50 (2 inch flange, ANSI 150 or 300) - Accuracy: ±0.1% for liquids, ±0.5% for gas - Repeatability: ±0.05% - Pressure rating: up to 40 bar (580 psi) standard - Temperature: −40°C to +200°C - Output: 4–20 mA HART, Modbus RS485, pulse - ATEX: Zone 1, Ex d IIC T6 available **Customer example:** A crude oil terminal in Port Harcourt, Nigeria, had a 2 inch line transferring from storage to tanker trucks. They used turbine meters but got 5% error due to entrained gas. They switched to our MF200 Coriolis meter. Error dropped to 0.15%. Payback was 3 months from reduced product giveaway. **Price range:** $2,500–$4,500 depending on options and approvals. **Best for:** Custody transfer, fiscal metering, where accuracy pays for itself. --- ### 2. Oval Gear Flow Meter (Budget Option for Viscous Crude) **How it works:** Two oval gears rotate inside a chamber. Each rotation displaces a fixed volume. The meter counts rotations to get volumetric flow. **Why for crude oil:** Oval gear meters work well on high viscosity fluids. Higher viscosity actually reduces slip and improves accuracy. Below 10 cP, accuracy starts to drop. **Real specs from our catalog:** - Model: Silver OG200 series - Size: DN50 (2 inch threaded or flanged) - Accuracy: ±0.5% for viscosity > 100 cP, ±1% for 10–100 cP - Viscosity range: 1 to 100,000 cP - Flow range: 0.5–30 m³/h (typical for 2 inch) - Max pressure: 40 bar standard, 100 bar optional - Temperature: −30°C to +150°C - Output: 4–20 mA, pulse (reed switch or NAMUR sensor) **Customer example:** A paint manufacturer in Vietnam used our oval gear meters on their 2 inch crude oil heating tank transfer line. Viscosity was 800 cP at 30°C. They tried a vortex meter once. It

crude oil flow meter 2 inch

crude oil flow meter 2 inch

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