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Sunflower Oil Flow Meter 10 L/min: Maintaining Accuracy at Low Industrial Speeds
Quick Answer: A positive displacement oval gear flow meter with PTFE gears and 316L stainless steel body handles sunflower oil at 10 L/min without losing accuracy. For low flow below 20 L/min, a pulse output with 4-20 mA HART transmitter is the reliable choice. Specify oil temperature up to 120 °C and viscosity around 35 cP at process conditions.
Why 10 L/min Matters for Sunflower Oil Batching
We see this flow rate often in small edible oil filling lines. A coconut oil producer in the Philippines asked us last month for a meter that can measure 8 to 15 L/min accurately during bottle filling. Their existing turbine meter drifted by 3% once flow dropped below 15 L/min. That kind of error adds up fast when you fill 5,000 bottles per shift.
Sunflower oil at ambient temperature sits around 35 cP to 45 cP. It is not as thin as water. At 10 L/min inside a DN15 pipe, the Reynolds number stays low. Turbine meters and vortex meters lose linearity in that zone. Positive displacement meters do not rely on velocity profile. They trap a known volume and rotate. This makes them the best fit for low speed batching.
Oval Gear Meter Selection for 10 L/min Sunflower Oil
Silver Automation Instruments supplies a compact oval gear flow meter with the model code SGO-1 series. For sunflower oil at 10 L/min, we configure it as follows.
Body material: 316L stainless steel, wetted parts compliant with food contact regulations. Gears: PTFE or PEEK. The PTFE option handles temperatures up to 120 °C without swelling. Seal: FFKM or EPDM depending on CIP temperature. Process connection: DN15, usually tri-clamp or BSP male thread. Flow range: 2 to 20 L/min on this size. Accuracy: ±0.5% of reading across the full range, including at 10 L/min. Repeatability: ±0.05%.
Most engineers skip this part but the transmitter matters. We pair the oval gear meter with an LCM-1600 series flow transmitter. Output can be pulse, 4-20 mA with HART, or RS485 Modbus RTU. For dosing sunflower oil into a mixing tank, pulse output feeding a PLC input works cleanly. If your control system expects 4-20 mA, the HART option lets you set span 0 to 20 L/min and read instantaneous flow plus total.
Real World Accuracy at 10 L/min
Last year a customer in Vietnam asked us to replace a failing mass flow meter on their sunflower oil blending skid. The Coriolis meter they used was sized for 50 kg/min minimum. At 10 L/min the signal to noise ratio was too poor. They saw zero drift during low flow. We installed an SGO-1 oval gear meter with DN15 tri-clamp connections, PTFE gears, and 4-20 mA HART transmitter. Factory calibration with sunflower oil at 35 °C showed ±0.4% actual error at 10 L/min. After 8 months, onsite check showed no measurable drift.
We calibrate each meter with actual sunflower oil or a calibration oil matching your viscosity and temperature. You provide the exact oil grade, operating temperature in °C, and process pressure in bar. We then match the meter factor across 5 points: 2, 5, 10, 15, 20 L/min. This ensures linearity where you actually run the meter, not just at maximum flow.
Installation Tips for Low Flow Stability
Vibration kills accuracy on small oval gear meters. Use a rigid mounting plate. Keep the meter full of liquid, no air pockets. Install a straine
Temperature compensation is built into the transmitter if you select the HART version. You can connect a PT100 sensor to the LCM-1600 and the electronics correct volume to reference temperature. For custody transfer of edible oil by volume, this keeps your totals at standard 20 °C without manual calculation.
Price and Delivery
A typical set for sunflower oil 10 L/min includes the oval gear flow meter DN15 with 316L body, PTFE gears, tri-clamp connection, LCM-1600 flow transmitter with 4-20 mA HART and pulse output, calibration certificate at 5 points. Price ex-works China ranges from 950 to 1350 USD depending on transmitter options and seal material.
Lead time is 7 to 10 working days for standard configurations. We ship by DHL, FedEx, TNT, or sea freight to Southeast Asia, Oceania, Latin America, Africa, and the Middle East.
FAQ
Q: Can you measure sunflower oil at 10 L/min with an oval gear meter?
A: Yes. The SGO-1 DN15 meter handles 2 to 20 L/min with ±0.5% accuracy. At 10 L/min it stays well within specification because output pulse per liter remains linear.
Q: What if the oil temperature reaches 80 °C?
A: PTFE gears and FFKM seals work up to 120 °C. We verify zero offset at your operating temperature during calibration.
Q: How do I connect the meter to a PLC for batching?
A: Use the pulse output. Each liter generates a known number of pulses, typically 1000 pulses per liter. The PLC counts pulses and stops the pump. 4-20 mA with HART is also available for continuous flow monitoring.
Q: Is the meter suitable for food grade sunflower oil?
A: Yes. 316L body, PTFE gears, and FFKM or EPDM seals meet FDA and EU 1935/2004 requirements for food contact. Certificate of compliance is supplied with each meter.
Q: How often does the meter need recalibration?
A: With clean sunflower oil and standard duty, check calibration every 12 months. The oval gear design shows gradual wear only if abrasive particles are present, which the upstream filter prevents.
How to Order a Sunflower Oil Flow Meter for 10 L/min
Send us your oil type, flow range in L/min, operating temperature in °C, process pressure in bar, pipe size (DN), connection type, and required output signal. We will propose the exact meter model and transmitter configuration with a fixed price quotation within 24 hours. Write to our sales team at [email protected] or fill the inquiry form at https://flow-meter.com.au with the subject line “Sunflower oil meter 10 L/min”.
Here is the thing. We stock spare gear sets and seals in our Sydney warehouse for customers in Oceania. So if you ever need a quick replacement, lead time is 2 days to Perth, Auckland, or Suva. That detail matters when your production line cannot wait two weeks for parts.
Silver Automation Instruments supplies industrial flow meters for edible oil, chemical, and water applications across more than 40 countries. Our team tests each meter at process conditions before shipment. No generic calibration sheets. Your meter sees your fluid.