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Biodiesel Flow Meter DN200 Bulk Transport Custody Transfer Specs
Quick Answer
For DN200 biodiesel bulk loading and custody transfer, Silver Automation Instruments supplies a direct mass Coriolis flow meter that meets OIML R117 and MID standards. The meter cuts out density correction errors that volumetric meters have with B20 and B100 blends. Typical accuracy is 0.1 % of rate from 50 000 kg/h up to 300 000 kg/h, with ATEX Zone 1 approval and 4-20 mA HART plus Modbus output.
Why Mass Flow Beats Volume Measurement in Biodiesel
Biodiesel blends change density with temperature and feedstock. A turbine or oval gear meter needs temperature correction tables. Here is the thing: those tables drift with oxygenate content. We have seen this on customer sites many times. A direct mass meter weighs the biodiesel. You get revenue-grade measurements regardless of B20, B50 or B100. No linearization curves, no density manuals. Over a truck loading season, a DN200 mass meter from Silver Instruments avoids billing errors worth thousands of dollars. Most engineers skip this part, but in practice the first batch of B20 in winter always reveals the difference.
Key Specifications for a DN200 Custody Transfer Meter
Our standard DN200 Coriolis sensor handles nominal flow rates up to 300 t/h. Continuous duty rating is 250 t/h. Process connection is DN200 PN16 or ANSI 150 RF, material 316L. Wetted parts include Hastelloy C22 option if your biodiesel has acid number above 0.5 mg KOH/g. Accuracy plus minus 0.1 % of mass, repeatability 0.05 %. Fluid temperature range minus 20 to 80 deg C. Maximum operating pressure 16 bar. Electronics: remote mount transmitter with IP67, ATEX Zone 1 Ex db ia IIC T4 Gb, IECEx. Output signal: two 4-20 mA with HART 7 and Modbus RTU RS485. Custody transfer version adds tamper-evident sealing and a secure totalizer. For net volume corrections, we include a PT100 temperature output. We can also supply a drain port for flushing after B100 batch runs.
Recommended Meter: Silver Instruments S-CMF Series DN200
The S-CMF dual bent-tube meter from Silver Automation Instruments is a fit for truck and barge loading. Straight pipe requirement is only 3D upstream and 1D downstream. No flow conditioner needed. The meter handles pressure drops under 1.5 bar at maximum flow. Last year a customer in Kalimantan, Indonesia, used two DN200 units on a biodiesel barge terminal. They load 800 tonnes per vessel, and the meter repeatability
Installation Tips for Bulk Biodiesel Transport
Mount the sensor after the filter and before the loading arm. Keep the meter tube full at zero flow. We suggest a zero-calibration check at month end. Because biodiesel can gel below 5 deg C, heat tracing or insulation may be needed in cold climate regions. The DN200 sensor mass is about 480 kg, so plan lifting gear. Commissioning is simple: we pre-configure the transmitter at factory for your flow range and biodiesel type. After power-up, the meter starts measuring immediately. Our support team can assist via remote video if you are at site in Thailand or Kenya.
Get a Quote for Your DN200 Biodiesel Meter
Send us your minimum and maximum flow rate in kg/h or t/h, biodiesel temperature, operating pressure in bar and pipe schedule. Also let us know which country and what custody transfer approval you need. OIML, MID, NMI Australia, or local weights and measures. We will return a full datasheet, price and lead time within one business day. Email your data to [email protected] or use the form on our site.
Frequently Asked Questions
Can the meter run B100 biodiesel straight from the reactor?
Yes. The 316L wetted parts are fully compatible with B100. For high free fatty acid streams, we recommend the Hastelloy option and a check of the pH reading.
What is the pressure drop across the DN200 meter at 300 t/h?
It is below 1.2 bar. The twin tube geometry keeps pressure loss low. You can use standard loading arm pumps.
Do we need a proving loop for custody transfer approval?
Most authorities accept factory calibration with traceable mass flow standards. We can also help you set an on-site proving with a master meter if your local regulation requires.
How do you handle shipping to Africa or Middle East?
We pack DN200 meters in seaworthy wooden crates with shock indicators. We ship DAP to Mombasa, Jeddah, and other ports regularly. Air freight is available for emergency orders.
What maintenance does the meter need?
Zero calibration check each month. Visual inspection of the transmitter and cables. No moving parts need replacement. We recommend a 2-year calibration check at our factory or an accredited lab.