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Coriolis Mass Meters for High Repeatability Fuel and Hydrocarbon Dispensing Systems

Quick Answer

Silver Instruments Coriolis mass meters measure fuel and hydrocarbon liquids by mass, not volume. A DN25 or DN50 model from Silver Automation Instruments repeats within 0.05 percent on diesel loading and jet fuel skids. Send pipe size in DN, flow range in kg/h, pressure in bar, and temperature in degree Celsius for a quote.

These meters fit diesel truck loading, aviation refueling, marine bunkering, LPG transfer, and light hydrocarbon batching. One sensor gives mass flow, density, and temperature. That removes extra density compensation loops and reduces invoicing disputes.

Why Repeatability Matters in Fuel Dispensing

Fuel terminals care more about repeatability than absolute accuracy on many loading arms. A meter can overstate one batch and understate the next. That spread creates tank reconciliation problems and customer complaints. Coriolis meters avoid most drifting factors because they measure mass directly. There are no mechanical gears, density lookup tables, or moving parts that wear.

In diesel truck loading, temperature changes from early morning to midday. A volumetric meter needs correction factors. A Coriolis meter reads mass directly. The built-in temperature sensor still reports process temperature if you need net volume at 15 degree Celsius.

Repeatability Numbers That Matter

Silver Instruments Coriolis meters typically hold repeatability of 0.05 percent of rate or better for clean liquids. Accuracy is 0.1 percent of rate on most DN15 to DN150 meters. Zero stability is 0.02 percent of full scale on standard models. For custody transfer or tax metering, these numbers keep truck loading totals consistent.

We have seen customer sites where turbine meters drifted after six months because of bearing wear and light debris. A Coriolis meter has no bearings in the flow path. The measuring tubes are 316L stainless steel or Hastelloy C. Calibration stays stable longer. Most engineers skip this part until a turbine meter fails during a peak loading shift.

Model Selection for Common Hydrocarbon Applications

For aviation refueling bowsers at 500 to 3 000 kg/h, use a DN15 or DN25 meter with 4-20 mA HART plus pulse output for batch counters. For diesel truck loading at 5 000 to 20 000 kg/h, choose a DN40 or DN50 meter with a PN40 or PN100 flange. For LPG truck loading, select a DN25 to DN40 meter with ATEX Zone 1 certification and PT100 temperature compensation. For marine bunkering up to 60 000 kg/h, a DN80 or DN100 meter with Modbus RTU often integrates easily with the loading computer.

Wetted parts are 316L stainless steel on standard models. Choose Hastelloy C for aggressive hydrocarbon streams. Pressure ratings go up to PN100. Temperature range is minus 50 to 200 degree Celsius. Outputs include 4-20 mA HART, pulse, RS485 Modbus RTU, and digital density. These are practical specs for fuel and hydrocarbon skids.

What We Have Seen on Customer Sites

A fuel distribution yard in Indonesia replaced three turbine meters on diesel loading arms with DN50 Coriolis meters. Batch error dropped from 0.3 percent to under 0.1 percent. Fuel lost to unmeasured volume decreased. The meters did not need pre-run conditioning.

A jet fuel skid in Saudi Arabia used a DN25 meter with ATEX Zone 1 approval and pulse output. The loading system counted mass batches in kg and reported density at 15 degree Celsius. Repeatability stayed within 0.05 percent during summer temperature swings.

A chemical trader in Vietnam handled mixed aromatic hydrocarbons. The density reading from the Coriolis meter helped detect off-spec solvent in one batch before it reached the truck.

Why Silver Automation Instruments

Silver Automation Instruments supplies flow meters from China