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Peanut Oil Flow Meter Processing Temperature Compensation Specs
Quick Answer
When you meter peanut oil, temperature shifts directly change oil volume in the pipe. A flow meter with built-in temperature compensation corrects the raw reading back to a standard reference, normally 15 °C. For batch filling, custody transfer, or inline blending, we recommend an oval gear meter paired with a PT100 sensor and a smart transmitter. That setup keeps accuracy within ±0.5 % even when your process swings from 25 °C to 80 °C.
Why Temperature Compensation Matters for Peanut Oil
Peanut oil expands about 0.07 % for every 1 °C rise. If your filling line runs at 45 °C in the morning and 65 °C after lunch, a meter without compensation will overfill or underfill every bottle. A 20 °C swing adds a 1.4 % volume error by itself. In a custody transfer, that error translates to real money lost. Engineers in snack food plants and peanut oil refineries learned this the hard way. In practice, the fastest fix is to bring a temperature sensor right into the meter body and let the electronics do the correction in real time.
Silver Automation Instruments Flow Meter with Built-In Temperature Compensation
We build oval gear meters with temperature compensation as a single integrated unit. The PT100 sensor sits in a thermowell directly in the measuring chamber. The transmitter head carries a compensation algorithm that references the peanut oil density curve stored in its memory. Outputs are all temperature-corrected. You get the net volume referenced to 15 °C or 20 °C, whichever your plant standard calls for. Because peanut oil viscosity can be high, we use PPS or PEEK gears with hard journal bearings. Seals are FKM or PTFE, compatible with edible oil. No world-leading claims here, just a meter that survives daily CIP cycles and keeps on counting.
Key Specifications (Temperature, Pressure, Accuracy)
The standard oval gear meter for peanut oil comes in sizes DN15, DN20, DN25, DN40, and DN50. Process temperature range spans 0 °C to 120 °C, with the compensation loop active from 10 °C to 90 °C. The PT100 connects directly to a 4 20 mA HART transmitter, and that transmitter outputs a corrected volumetric flow. Pressure rating is PN40 as standard, with PN63 available on request. Accuracy on temperature-corrected volume is ±0.5 % of reading above 2 L/h. Repeatability stays within ±0.05 %. The electronics accept an external density table, so you can tune the curve to your exact peanut oil batch if needed. Power supply is 24 V DC loop-powered. ATEX Zone 1 and IECEx approvals are standard on all models we ship to Malaysia, Nigeria, and Brazil. Output options include active pulse, 4 20 mA HART, and Modbus RTU over RS485. No single analog output ever gets you stuck without data.
Typical Applications in Peanut Oil Processing
We see this meter most often in three places. First, peanut oil bottling lines. A beverage group in Vietnam runs our DN15 compensated oval gear meter on eight filling heads. Oil temperature moves from 30 °C to 55 °C between shifts, bu
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Installation and Setup Tips
Mount the meter so the electronics face upward and the cable gland drains away from the housing. Do not install with the transmitter directly above a steam jacket; that heat can drift the PT100 reading. Most engineers skip this part, but we have seen it on customer sites many times. Use a strainer upstream. Peanut oil can carry fine meal particles that score the gears. Set the reference temperature in the local display menu. If you use 20 °C instead of 15 °C, check your tax and excise rules before shipping. The transmitter accepts a dry calibration against a master meter, but we ship units wet-calibrated on peanut oil at our factory. That means you can install and start counting with almost zero field correction. Wiring is two-wire for the loop and a separate pair for the RS485 channel if you need it.
FAQ: Peanut Oil Flow Meter Temperature Compensation
What reference temperature is standard for peanut oil custody transfer?
Most contracts in Southeast Asia and the Middle East use 15 °C. Some Indian buyers ask for 20 °C. Our transmitter allows you to select either in the HART menu.
Does the meter ship with a preloaded density curve for peanut oil?
Yes. The factory loads default curves for peanut oil, sunflower oil, and generic vegetable oil. You can still upload your own 10-point table if your product varies.
Can I retrofit an existing oval gear meter with temperature compensation?
Often you can. If your meter body has a thermowell port, we add the PT100 insert and a separate Silver TC100 compensator module. Send us a photo of your meter nameplate and we check compatibility the same day.
How does viscosity affect the temperature compensation accuracy?
Peanut oil viscosity drops from roughly 60 cP at 25 °C to 12 cP at 60 °C. Our compensation loop accounts for that shift because the stored density curve is linked to a simple viscosity model in the firmware. The error stays inside ±0.2 % across the range.
What information do you need to quote a compensated oval gear meter?
Send us your pipe size (DN), oil temperature range, flow range in kg/h or L/h, and the process connection type. Also tell us if the area is ATEX Zone 1 or Zone 2. We reply with a fixed price and a PDF data sheet within one working day.
See the full oval gear flow meter range at flow-meter.com.au. Ask for the OGF-TC datasheet and specify peanut oil processing when you write.
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