Coriolis flow meters for labs & test benches

The meter relies on the Coriolis force: flow inside a vibrating tube causes a phase shift of oscillations, and the electronics derive mass from it. For a laboratory the value is direct measurement in mass units — experimental results are reproducible without corrections for sample properties.

Verification and calibration of other flow meters, R&D and pilot plants, engine test benches, fuel equipment, pump and valve benches, hydraulic and cryogenic rigs. Each bench type is described in the media and tasks section of this page.

It measures mass directly and therefore often serves as a working reference when verifying and calibrating turbine, electromagnetic and ultrasonic meters. No density conversion is needed — fewer sources of uncertainty in the measurement chain.

Density and temperature of the medium. For a bench these are extra data channels: density is measured in the 650–2000 kg/m³ range, and temperature can be used to monitor test conditions. The signals are output together with flow.

For gaseous media accuracy is lower than for liquids: ±0.5–1.0% depending on size. Aerated samples and free gas distort liquid measurements, and large sizes cost more than volumetric meters; we select a trade-off between accuracy and budget per task.

Yes: distilled and deionised water, calibration oils and silicone fluids of reference viscosity are typical media for these sensors. They are used as working references in verification and calibration chains for other flow meters.

Solvents, acids, alkalis, monomers and catalyst solutions are measured at low volumes. For aggressive compositions corrosion-resistant tube materials are selected, and the small internal volume of the D-type sensor reduces losses of expensive reagents.

TS-1 and RT jet fuel, gasolines, diesel fuel, oils and hydraulic fluids are working media for bench tests. Typical duties: fuel flow measurement on engine benches, fuel equipment testing, reference metering when verifying dispensers.

Direct mass measurement needs no density calibration, so buffer solutions, polymer solutions, emulsions and suspensions are measured correctly even as composition changes. For magnetic fluids and complex suspensions the composition is clarified from your datasheet.

D-type sensors (Δ): DN01 covers from 1.2 to 12 kg/h, and DN02 and DN25 are also produced. The small internal volume of the measuring tubes reduces sample losses and speeds up response, which matters in laboratory dosing rigs.

For cryogenic benches, executions with medium temperature down to −196 °C are available; on hydraulic benches the meter works with oils and hydraulic fluids in standard and high-temperature executions. The conditions of a specific bench are fixed in the datasheet.

The range covers DN01–DN250, so a single meter often covers most of a bench's working range thanks to the up to 100:1 turndown. With varying regimes this reduces the number of reference instruments on the rig.

The D type (Δ) is a triangular measuring tube geometry for low flows; it is produced in DN01, DN02 and DN25. The rigid design gives a stable zero and minimal drift, so these sensors are chosen for reference calibration benches.

Fuel systems of benches are covered by L sensors (straight-tube, DN08–DN50): low hydraulic resistance and measurement up to 39 000 kg/h. The ME100 transmitter polls the sensor at up to 100 Hz, which helps capture transient test regimes.

The base option is 316L stainless steel; for acids and chloride-bearing media Hastelloy C4 and C276 are used. For critical duties electropolishing of the contact surface down to Ra ≤ 0.4 µm is available — it reduces interaction between the medium and the metal.

Describe the task in the datasheet or configurator: medium, flow range, pressure, temperature, connection to the bench. From these data we select the size, materials and transmitter, then prepare a quotation; the price depends on the execution.

Replacement is planned in advance: we select an execution with the same process and mounting dimensions, and in many cases it is done without welding. Interfaces and piping of previously installed meters (including Micro Motion and Endress+Hauser) are checked against drawings.

The allowable error is ±0.1% to ±0.2% depending on size; configurations for calibration benches state accuracy down to ±0.1%. Repeatability and zero stability are separate requirements of metrology labs, and they are exactly what is checked in reference chains.

The meter is entered in the State Register of Measuring Instruments under No. 98506-26. For a metrology service this means it can be used in the sphere of state regulation; for benches, the sensor can work in verification chains with an approved procedure and open metrological documents.

Every sensor is calibrated individually on a flow rig; for reference duties, multi-point calibration of the ME100 against master instruments is available. Verification follows the approved procedure — on flow rigs or on site using provers.

On top-accuracy benches — yes: the jacket stabilises sensor temperature to within ±0.1 °C and reduces zero drift. The option is compatible with D-type DN01 and DN02; the need is determined by the required measurement stability.

A Coriolis sensor places no requirements on straight runs: the bench piping is laid out freely, without the long stabilising sections needed by turbine, vortex or ultrasonic meters. This saves space in a dense layout.

Compact sensors, including the miniature D type, fit into existing rigs without re-layout: small internal volume, flexible orientation, connections selected for the bench piping. Moving it between metering lines takes minimum time.

Standard sensor channels fit data acquisition: RS-485 Modbus RTU, 4–20 mA with HART, CAN and a pulse output; PROFIBUS PA is an option. The ME100 delivers measurements at up to 100 Hz, so transient bench regimes are captured without gaps.

Bench pulsations and vibration are accounted for: the sensor is tested for vibration resistance to GOST R IEC 60068-2-6, and the high polling rate tracks rapid flow changes of injectors and pumps. There are no moving parts inside to wear out.

Zones with flammable vapours are covered by flameproof transmitters: the ME100 carries Ex db ib IIC T6 Gb, and the sensor with it — Ex ib IIC T6…T1 Gb. The required marking is determined by the zone class; we confirm it at the selection stage.

The meter comes with EAEU (TR CU) certificates, a type description and an operating manual, plus the verification procedure. The warranty period is 18 months after delivery or 12 months after installation; whichever event comes first applies. The documents also support placing the meter into the lab's metrological chain.

Commissioning supervision, startup, service and verification — all in Russia, by the company's engineers. For a test bench this simplifies bringing it into operation and further support: everything stays with one contractor.

No lubrication, no replacement parts: there are no wear components or moving parts inside. For planning purposes the resource is a mean service life of 20 years and a mean time between failures of 100 000 hours; both help plan the bench's verification fleet.

The company supplies verification rigs — pipe provers and compact provers; Mass-EXPERT sensors are used in them as the measuring part. The scope and diagram of the rig for a specific task are fixed per project. ---