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Flow Meter Systems: Integrated Skids for Custody Transfer and Blending
Quick Answer: Integrated flow meter skids from Silver Automation Instruments combine Coriolis mass flow meters, strainers, valves, and a local control panel into one engineered package. They deliver ±0.1 % to ±0.15 % mass accuracy for custody transfer of crude oil, refined products, chemicals, and food oils. You get a factory-tested assembly that shortens site installation and commissioning to a few hours instead of days.
What an Integrated Custody Transfer Skid Actually Includes
Most engineers picture a flow meter and a pipe. A custody transfer or blending skid is much more. The skid arrives on a steel frame with a Coriolis meter (DN15 up to DN200), a basket strainer or filter, an upstream flow straightener if needed, double block and bleed valves for meter proving, a PT100 temperature sensor, a pressure transmitter with 4-20 mA HART output, and a local flow computer or PLC. The whole assembly is wired and pressure tested at our facility. On site, you connect two flanges and two cables. That is it.
Why Blending Skids Demand Extreme Repeatability
In paint, lubricant, or fuel blending, small dosing errors show up fast. A 0.5 % deviation in an additive can ruin a whole 20,000 litre batch. We have seen a paint manufacturer in Southeast Asia lose USD 18,000 on one bad blend because the turbine meter drifted after handling viscous resin. Our solution: direct mass measurement with a Coriolis meter. Viscosity changes do not confuse the sensor. The skid runs a multi-stream blending logic inside the controller. It opens and closes pneumatic valves based on real-time mass totals. Repeatability stays within ±0.05 % of rate.
A Pre-Engineered Skid Cuts Site Work to Hours
Here is a real case. A fuel terminal in Indonesia used to install separate flow meters, strainers, and valves on a DN100 loading line. Each station needed four days of pipe fitting, welding, wiring, and leak checks. After switching to a Silver Instruments skid for custody transfer of heavy crude at 10 bar and 120 °C, the average site work dropped to six hours per station. Because all connections were already made and tested, the crew simply bolted the skid between two flanges, plugged the signal cable into the junction box, and started the meter proving run.
The Meter That Sits at the Heart: Coriolis Technology
Ultrasonic and turbine meters work for many jobs. But for custody transfer you need recognized standards. Coriolis meters comply with OIML R117, API MPMS Chapter 5.6, and ISO 10790. Silver Automation Instruments supplies Coriolis meters with secondary pressure containment and ATEX Zone 1 or IECEx certification. A common setup: DN80 meter, 316L stainless steel wetted parts, 300 lb flanges, measuring 0 to 60,000 kg/h of diesel at 35 °C. Output signals include pulse for totalization, 4-20 mA for flow rate, and Modbus RTU for density and temperature diagnostics. Density measurement helps catch product interface and water slug in crud
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Where We See These Skids Most Often
Oil and gas terminals in the Middle East use our custody transfer skids for loading crude onto trucks and rail cars. A desalination plant in Oman uses a seawater blending skid to mix brine with fresh water, controlling TDS to ±50 µS/cm. Food oil manufacturers in Latin America run edible oil blending on DN25 skids with EHEDG compliant surface finish. Chemical plants in Vietnam meter solvents like acetone and toluene, where the ATEX Zone 1 design and stainless steel wetted parts prevent corrosion and ignition.
What Happens Before Shipping
Every skid undergoes a wet calibration with water or mineral oil traceable to national standards. We test the pressure drop across the strainer, verify the valve leak tightness, and simulate a meter proving cycle. The results go into a calibration certificate and a FAT report. This is not a brochure claim. A recent DN150 skid for a fuels terminal in Kenya showed zero leakage at 40 bar and meter accuracy within +0.08 % across 10,200 kg/h to 102,000 kg/h.
How to Get a Quote Without Long Email Chains
Tell us your fluid, pressure (bar), temperature (°C), pipe size (DN), and mass flow range (kg/h). Our engineering team picks a pre-engineered skid layout or modifies it for your site. Most quotes go out within one working day. Email [email protected] or reach us on WhatsApp at +86-25-52155837. You can also call +86-25-68650347. For drawings and data sheets, just ask.
FAQ
Can the skid handle viscous fluids like heavy fuel oil? Yes. The Coriolis meter inherently measures mass. We size the meter for a pressure drop below 0.5 bar at your maximum viscosity, often up to 5000 cP for heated skids.
Does the skid require a straight pipe run? Coriolis meters usually need zero or minimal straight run. But we include a flow straightener if the upstream piping contains a control valve or elbow closer than five pipe diameters.
What communication protocols are standard? Modbus RTU, 4-20 mA HART, and pulses are all wired to a terminal box. Optional Profibus DP and Ethernet/IP modules are available.
How do you support installation in remote areas? We ship the skid fully assembled. We provide a pre-wired connection drawing and offer remote video support via WhatsApp. In many cases, a local technician commissions the skid in half a day.
What about explosion-proof certification for Zone 1? All electrical components carry ATEX or IECEx Ex d or Ex ia certificates. We provide the dossier for local authority approval.
Still not sure which skid fits your custody transfer or blending project? Send your operating parameters (fluid, pressure in bar, temperature in °C, pipe size DN, flow range in kg/h) to [email protected]. You can also call +86-25-68650347, message us on WhatsApp at +86-25-52155837, or connect via WeChat: +86 15365082610. We normally reply within half a business day.
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