Coriolis flow meters for battery production

The measurement relies on the phase shift of vibrating measuring tubes under the Coriolis force; the shift is proportional to mass flow. The meter delivers mass directly, skipping density and temperature conversions, so a non-uniform slurry composition does not distort the result.

At the core stages of the line: preparation and mixing of active material, feeding of cathode and anode slurries, and electrolyte injection into cells of 18650, 21700 and 4680 formats. The media for each stage are listed under Typical media on this page.

Mass flow, density and temperature are output simultaneously. Density serves as a handle on the solids concentration in slurries and on electrolyte condition, while temperature helps keep mixing and feeding stable.

Volume drifts with temperature and density; mass does not. Carbonate blends and slurries are rarely ideal in composition, so volumetric dosing would bring constant corrections and extra scatter into the active-material recipe. Direct mass measurement removes that source of variance.

Coriolis meters share the usual limits: free gas in the stream distorts liquid measurement, price grows with line size, and aggressive media require resistant materials and executions. These points surface at the data sheet stage and shape the execution choice.

Electrolytes are standard media on this page: LiPF₆, LiBF₄ and LiTFSI salts in EC, DMC, DEC, EMC blends. They are moisture-sensitive and need sealed systems, while wetted materials must resist fluorine-bearing media.

It does. Highly viscous LiNiMnCoO₂, LiFePO₄ and LiCoO₂ pastes with PVDF and CMC binders are dosed by mass; coating uniformity on the current collector starts here. A straight-tube L sensor without dead zones suits these slurries.

Anode slurries are supported too: graphite formulations, silicon-carbon Si/C composites and LTO with SBR, CMC and PAA binders. Such pastes call for steady feeding and repeatable flow, and the execution is matched to their rheology.

Straight-tube L sensors are specified for these duties: minimal hydraulic resistance and no dead zones let graphite, NMC and LFP pastes run without erosion of the measuring path. Solids loading and particle size go into the data sheet, as they drive size and material.

Yes — the IP66/IP67 version is suitable for dry rooms held at a dew point of −40…−60 °C. The sealed design keeps moisture-sensitive electrolyte away from ambient air, which matters for LiPF₆ systems that react with moisture.

NMP, carbonates and other organic solvents are routine media here, with 316L as the base material. Binders and additives (PVDF, CMC, SBR, PAA, FEC, VC) are dosed as active-material components in the proportions the recipe prescribes.

It depends on the medium: carbonates, NMP and mild components are served by 316L; for fluorine-bearing electrolytes and their decomposition products we recommend Hastelloy C4/C276, which stands up to HF. Surfaces are passivated and finished to Ra ≤ 0.4 µm.

Compact DN01–DN08 sensors with minimal internal volume: they cover roughly 0.1 to 200 kg/h and slot into lines injecting electrolyte into individual cells. The straight-tube L version is used where the medium is viscous.

Straight-tube L sensors with larger sizes, DN15–DN50: they handle high-viscosity, thixotropic pastes without dead zones. Options include sensor heating for stable viscosity and density monitoring for solids content.

For demanding dosing the page recommends ME100: 0.1% class, digital signal processing, self-diagnostics, and 4–20 mA HART plus RS-485 Modbus RTU outputs. The family also includes ME200 for hazardous areas, dust protection included.

Pressure-wise: standard execution to 10 MPa, P to 45 MPa for main sizes, PK to 96 MPa in the 003…PK range. Sealing comes from the all-welded design with no gaskets — electrolyte cannot reach the atmosphere and leaks through joints are excluded.

Describe the medium and its nature (slurry, electrolyte or solvent), flow, pressure and temperature, plus hazardous-area and connection requirements, in the data sheet. We will propose an execution and prepare a quotation. The page configurations are a starting point; the final match comes from line data.

Liquids and slurries are rated 0.1–0.2% class, and 0.1% with the ME100 transmitter. Repeatability of ±0.05% keeps the active-material recipe stable from batch to batch. Each meter is calibrated individually on a flow rig.

The meter is entered in the State Register under No. 98506-26 — confirmed type approval that allows measurements in the sphere of state metrological regulation, including commercial and acceptance operations. The metrological documents are available on the site.

No dismantling is needed: checks use provers while the meter stays in the line. Alternatively, a calibration rig with reference meters can be used. Pipe and compact provers are supplied by us.

Density is a measurement channel in its own right: it tracks the solids concentration in a slurry. A turndown of up to 100:1 holds rated accuracy at both nominal and low flows — useful for final feeding and intermittent operations.

Not required: flow profile is not a constraint, so no stabilisation lengths are needed upstream or downstream. A dosing or circulation line ends up shorter than with volumetric meters of the same duty.

Orientation follows the piping layout; the key points are self-draining and no dead zones where the medium can settle. Straight-tube L sensors are installed directly into the line break. Guidance for a given line is provided in the operating manual.

Data exchange is covered by 4–20 mA with HART, RS-485 Modbus RTU, CAN and frequency/pulse output; PROFIBUS PA is added where required. Line controllers and DCS connect in a standard way, and the set covers data exchange and signalling tasks.

For solvent rooms the instrument is specified in protected versions. Sensor marking: Ex ib IIC T6…T1 Gb with ME100, or Ex ia IIC T6…T1 Ga with ME200; the matching transmitters are rated Ex db ib IIC T6 Gb and Ex db ia IIC T6 Gb respectively. Dust protection Ex ia tb IIIC T80 °C Db is available with ME200.

Yes, and it is an established scenario: we select an execution matching the mounting and process dimensions, and in many cases the swap needs no welding. Units already on the line (Micro Motion and Endress+Hauser among them) are cross-checked against piping drawings and interfaces.

Delivery documents: TR CU (EAEU) certificates, the type description, the verification procedure and the operating manual. Warranty coverage runs from two start points — delivery and installation — ending 18 or 12 months later respectively; the first expiry stops coverage.

Service and metrology support are provided in Russia: commissioning supervision, startup, maintenance and verification. Planned work is scheduled around the plant regime so dosing lines keep running, and on-site verification is done without dismantling.

The design avoids wear altogether: no moving parts, no seals, nothing to replace at fixed intervals. Declared ratings — 20 years average service life, 100,000 hours mean time between failures.

Yes — metering units and systems are built around Mass-EXPERT, from a single dosing line up to a complete skid. Small sizes serve lab benches and pilot lines, then scale into series production. Scope and layout are agreed per project. ---