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Cooking Oil Flow Meter DN80 for Industrial Margarine Blending Controls
Quick Answer: A DN80 positive displacement flow meter, typically an oval gear model, is the direct solution for measuring cooking oil flow in margarine blending lines. It handles oil viscosities from 30 to 500 cP, delivers ±0.5% reading accuracy, and outputs 4-20 mA HART for seamless integration into batch controllers. Silver Automation Instruments supplies these meters with 316L stainless steel body and FDA-compliant seals, ready for your food process.
Why Oval Gear Meters Dominate Oil Blending Skids
Cooking oil, palm oil, and liquid margarine ingredients are high-viscosity fluids. A turbine meter loses accuracy when oil viscosity climbs above 100 cP. Vortex meters also struggle. Here is the thing: oval gear meters are positive displacement devices. Two oval rotors capture exact volumes of oil, ignoring viscosity changes. So you get stable readings even if the oil thickens at lower temperatures. For a DN80 line, typical flow rates sit between 2 and 20 m³/h. The meter body stays simple, with only two moving parts. Maintenance is low, and you can flush the meter during CIP cycles. We have seen this in many food plants across Southeast Asia: oval gear meters survive where other meter types drift.
Typical Specifications for DN80 Cooking Oil Meters
When you specify a DN80 meter for cooking oil or margarine blending, check these points. The meter should handle oil temperature from 40 to 120 °C. Pressure ratings must reach at least 16 bar. Wetted materials: 316L stainless steel housing and rotors, with PTFE or FKM seals compatible with edible oils. Accuracy of ±0.5% of reading is standard. Output options: 4-20 mA HART, pulse, and sometimes RS485 Modbus. Power is 24 V DC loop-powered. The local LCD display shows totalized volume and instantaneous flow in L/h or kg/h. Silver Automation Instruments also adds a high-temperature sensor head for margarine lines running near 100 °C. The flanges are DN80 PN16, drilled per EN 1092-1 or ANSI 150 for global compatibility.
Mounting the Meter in a Blending Control System
Most margarine blending systems use multiple flow meters: one for the base oil, one for water, and another for additives. The DN80 meter works as the master flow meter for bulk oil. Mount it horizontally, with the flow direction arrow pointing forward. Keep the meter pipe full at all times. Avoid air entrapment because oval gear meters count every pocket of volume, including air. Install a strainer upstream with 200-micron mesh to catch solids from the oil. No straight pipe runs are required, unlike vortex or differential pressure meters. You can bolt the meter directly after a valve or elbow. The 4-20 mA signal from the meter feeds into a PLC or batch controller. Typical blending tolerance is below 1% recipe error. One margarine producer in the Middle East configured their system with three DN80 oval gear meters from us and achieved a batch repeatability
Our Supply Scope for DN80 Cooking Oil Flow Meters
As Silver Automation Instruments, we supply the complete flow meter assembly. The shipment includes the DN80 oval gear flow meter, a matched 4-20 mA HART transmitter, a factory calibration certificate traceable to ISO 17025, and a pair of carbon steel or stainless steel companion flanges. We also include gaskets and bolts on request. The meter leaves our factory fully tested with food-grade mineral oil. Calibration data points are stored inside the transmitter. You can verify the meter on your own master meter without breaking the seal. For hot oil services, we supply meters with built-in PT100 temperature compensation. No extra temperature sensor is needed. And if your blending control panel supports Modbus, we configure the RS485 output and provide the holding register map. This saves your controls engineer one day of integration effort.
FAQ on Cooking Oil Flow Meters for Margarine Blending
What is the best flow meter for high-viscosity cooking oil? Positive displacement meters, especially oval gear, give the most stable readings because viscosity fluctuations do not affect volume measurement. For mass-based blending, a Coriolis meter also works well but costs more.
Can I use a Coriolis mass flow meter instead of an oval gear meter? Yes. A DN50 or DN80 Coriolis meter measures mass flow directly, which is ideal if your recipe is based on weight. It also measures density and temperature. But the capital cost is 2 to 3 times higher. We supply both types and will guide you based on total cost of ownership.
How do I clean a DN80 oval gear meter in a food plant? Our oval gear meters tolerate short-duration CIP fluids. You can flush with hot water or mild caustic detergent. Avoid abrasive cleaning agents. For sterile applications, consult us about a fully drainable meter body variant.
What output signal is most common for blending PLCs? 4-20 mA HART is the default. It transmits both flow and meter diagnostics over two wires. Pulse output is also available for batch totalizers. Modbus RTU is an option if your system uses serial communication.
Why choose Silver Automation Instruments for my meter supply? We ship ex-works Melbourne with full calibration documentation. Our after-sales team responds within 12 hours to queries from Southeast Asia, the Middle East, and Latin America. We also keep replacement rotors and seal kits in stock for the DN80 model. Many customers reorder from us within two years for additional lines.
Send us your oil flow parameters: To get a specific quote for a DN80 cooking oil flow meter, email us your flow rate in kg/h or L/h, oil temperature, line pressure, and pipe size. Mention the signal output you need and whether you require the meter in a complete blending skid. We reply with a technical data sheet, price, and delivery time within 24 hours. See more at our website flow-meter.com.au.