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Sunflower Oil Flow Meter DN15: Achieving High Precision in Small-Batch Blending
Quick Answer: A DN15 Coriolis mass flow meter delivers ±0.2% accuracy for sunflower oil in small-batch blending. It measures mass directly, ignores viscosity shifts, and handles flow rates down to 0.5 kg/h. Silver Automation Instruments supplies this meter with food-grade 316L wetted parts, PT100 temperature sensing, and 4–20 mA HART output for tight batching control.
Why Mass Measurement Beats Volume in Sunflower Oil Blending
Sunflower oil density drifts with temperature. A volume-based reading at 25 °C is not the same as one at 45 °C. For a 50 litre blending recipe, this difference can top 0.5 litres before any correction is applied. A Coriolis meter weighs the oil in kilograms or grams. The temperature swing does not change the mass output. Many seasoning sauce blenders in Thailand and Vietnam adopted mass measurement exactly for this reason. In practice, the operator sets a target of 6.000 kg, and the meter triggers a valve when the total reaches that number, eliminating density compensation loops.
DN15 Sensor Flow Range and Why It Fits Small-Batch Mixing
The DN15 flow tube from Silver Automation Instruments covers 0.5 to 100 kg/h for fluids with viscosity up to 200 cP. Sunflower oil at a typical blending temperature of 40 °C sits around 35 cP. That viscosity is well inside the meter’s stable operating window. We commonly see repeatability under 0.05% and batch accuracy of ±2 g on a 5 kg dose. In 2023, a mayonnaise producer in Selangor, Malaysia, replaced a positive displacement meter with our DN15 Coriolis. Their over-fill waste on sunflower oil dropped by 4.7 tonnes per year. The payback on the meter was under eight months.
Material, Connection, and Certification Choices
Standard wetted parts are 316L stainless steel, with Tri-Clamp process connections as the default. Customers in Australia often order the EHEDG-compliant version for dairy-like cleanability. For blending skids shipped to the Middle East, we configure the meter with IECEx and ATEX Zone 1 approval, IP67 protection, and NPT or DIN 11851 threads. The transmitter sends mass flow, density, and temperature simultaneously over four 4–20 mA outputs plus HART 7. That single signal triplet replaces three separate instruments on many small skids. Most e
Installation Notes That Save Time on Site
No straight pipe run is needed. You can mount the meter right after a 90° elbow or a manual valve. The sensor handles process pressures to 40 bar(g) at 120 °C. For sunflower oil lines, we recommend a zero calibration at the actual blending temperature, often 40 to 45 °C. Because the fluid temperature is stable during a batch, this locks in the highest accuracy. Vibration from a gear pump close by is rejected by the twin U-tube structure. One guideline we share with Southeast Asian system integrators: add a simple pipe support on both sides of the meter body when it sits on a mobile blending cart. This small step extends sensor life and keeps the zero point from wandering.
FAQ on Sunflower Oil Blending with DN15 Coriolis Meters
Q1: What accuracy can I expect for a 2 kg oil dose?
±1 g is typical under stable temperature conditions and a fresh zero. The meter’s 0.05% repeatability is what drives small-dose precision, not just the base accuracy figure.
Q2: Does the meter need recalibration when we switch from sunflower to canola or palm oil?
No. Coriolis meters measure mass intrinsically. A change in oil type does not shift the mass reading. Only the density output would update.
Q3: Is the DN15 body compatible with high-temperature clean-in-place cycles?
Yes. The sensor tolerates 130 °C peak during CIP and pairs well with Tri-Clamp connections to drain fully. Common alkaline and acid cleaning solutions do not harm the 316L tubes.
Q4: What is a realistic lead time for a configured sunflower oil flow meter?
Silver Automation Instruments stocks DN15 standard meters. For a configured unit with your required process connection and certifications, we ship within 7 to 10 business days to most addresses in Southeast Asia, Australia, and the GCC.
Q5: How do I get a firm quotation?
Send us your operating pressure (bar), temperature (°C), pipe size (DN), and full-scale flow range. Also let us know if you need Tri-Clamp or DIN 11851 ends. Email these details to [email protected] or visit our online store at flow-meter.com.au for standard DN15 configurations.