The AC Series Coriolis Mass Flowmeters are VNERʼs flagship line for high-precision mass flow and density measurement. Based on the Coriolis effect and advanced digital signal processing, the AC Series directly measures mass flow, density and temperature, and derives volumetric flow in real time.
Driven measuring tubes generate parallel sinusoidal signals. When fluid flows through the tubes, Coriolis forces cause a controlled deformation and a measurable phase shift between inlet and outlet. The transmitter analyses this time shift to calculate mass flow, while the oscillation frequency is used for density, and integrated RTD sensors provide process temperature.
With a compact, low-pressure-loss design, extended temperature and pressure ranges, and global approvals, the AC Series is suited for custody transfer, critical process control, and high-value fluid management in demanding industrial environments.
Performance and ranges are model- and configuration-dependent. Refer to the datasheet for detailed selection and sizing.
| Item | Description |
| Measuring principle | Coriolis effect with controlled tube oscillation; phase shift proportional to mass flow |
| Measured variables | Mass flow, density, process temperature; calculated volume flow |
| Measured media | Liquids and slurries (including viscous and non-Newtonian fluids); gases; selected two-phase/multiphase mixtures (with MFDTM) |
| Mass flow accuracy (liquids & slurries) | ±0.05 %, ±0.10 %, ±0.15 % or ±0.20 % of rate (High Accuracy / Enhanced / Standard / General) |
| Mass flow repeatability (liquids & slurries) | ±0.02 %, ±0.05 %, ±0.075 %, ±0.10 % of rate |
| Volume flow accuracy (liquids & slurries) | ±0.05 %, ±0.10 %, ±0.15 % or ±0.20 % of rate |
| Density accuracy (liquids & slurries) | ±0.50, ±1.00 or ±3.00 kg/m³ (High Accuracy / Standard / General); field calibration accuracy ±0.20 kg/m³; measuring range 0–5000 kg/m³ |
| Density repeatability | ±0.25, ±0.50 or ±1.50 kg/m³ |
| Gas mass flow accuracy | ±0.25 %, ±0.50 % or ±1.00 % of rate (High Accuracy / Standard / General) |
| Gas mass flow repeatability | ±0.15 %, ±0.25 % or ±0.50 % of rate |
| Temperature accuracy / repeatability | ±1.0 °C accuracy; ±0.2 °C repeatability |
| Turndown ratio | Recommended up to 20:1 for standard accuracy performance; larger turndown subject to zero stability (see sizing sheet) |
| Zero stability (typical) | From 0.02 kg/h (AC002) to 18.0 kg/h (AC150) depending on model |
| Max. operating pressure | Standard designs up to 10.0 MPa; higher-pressure models ≤15.0 MPa available (model- and temperature-dependent) |
| Secondary containment | Optional containment housings with up to 2.5 MPa (AC002–AC080) and 1.5 MPa (AC100–AC150) secondary pressure rating |
| Process temperature range (sensor) | Standard: -100...+200 °C; High-Temperature: -60...+260 °C; Ultra-High-Temperature: -60...+380 °C; Cryogenic: -196...+100 °C |
| Ambient temperature range (transmitter) | -40...+60 °C; humidity ≤95 % RH non-condensing |
| Materials – wetted parts | SS316 / SS316L; Hastelloy C22 and other alloys on request |
| Materials – housings | Sensor: SS304 / SS304L or SS316 / SS316L; Transmitter: epoxy-coated aluminium or SS316 / SS316L |
| Approvals & safety | Compliant with PED 2014/68/EU and relevant GB/ASME piping codes |
| Explosion protection and ingress protection | Up to Ex d / Ex ib / Ex tb, IP66/67 (ATEX / IEC zones, see certificates) |
| Category | Specification / Option | Notes |
| Transmitter platform | A-Series full-digital transmitter (DSP-based) | All-digital drive and signal processing for ultra-low flow signals |
| Liquid & slurry performance | High-accuracy classes for mass, volume and density | Validated on ISO/IEC 17025-certified NIM calibration rigs |
| Gas measurement | A-GASTM gas measurement algorithm | Ultra-high frequency resolution to minimise errors from low gas density and high velocity |
| Two-phase / multiphase | MFDTM multi-frequency drive technology | Real-time multi-/variable-frequency tube excitation for improved stability under gas-liquid two-phase conditions |
| Diagnostics | ILODTM intelligent online diagnostics | NAMUR NE107-compliant diagnostic and event messages; supports predictive maintenance and lifecycle traceability |
| Measurement modules | Concentration, composition, crude oil water-cut, online viscosity, bidirectional flow, batch functions | Expandable multi-measurement platform to reduce instrument count |
| Analog outputs | 4-20 mA (HART) | Assignable to main process variables |
| Pulse / frequency outputs | 0-10 kHz pulse / frequency | For totalizing, batching and high-speed control |
| Digital communication | HART, Modbus RS485, FOUNDATION Fieldbus, PROFINET | Up to 5 configurable I/O channels with flexible combinations |
| PROFIBUS-PA, Ethernet-APL, discrete I/O | ||
| Installation options | Integral, extended-integral, remote, wall-mounted | Supports confined spaces and different ambient/temperature conditions |
| Low-temperature display & operation |
Clear multi-line display and explosion-proof touch keys down to -40°C |
Operation without opening housing, suitable for hazardous and harsh environments |
| Industry | Medium / Service | Typical Use |
| Chemical & Fine Chemicals | Acids, alkalis, solvents, specialty chemicals | Precision dosing, batching and recipe control; density-based quality assurance |
| Petrochemical & Refining | LPG, diesel, gasoline, aromatics, intermediates | Mass-based transfer and blending; loading/unloading and custody-related measurement (subject to local approvals) |
| Food & Beverage | Syrups, honey, dairy fat, vegetable oils, flavourings | Mass-based filling, ingredient dosing and inline density / concentration monitoring |
| Energy & Biofuels | Biodiesel, ethanol, fuel blends | Production control, transfer and distribution of biofuels |
| Oil & Gas (onshore/offshore) | Corrosion inhibitors, methanol, scale inhibitors and other injection chemicals | High-accuracy low-flow chemical injection under high pressure and tight space constraints |
| Water & Wastewater Treatment | Coagulants, pH adjustment chemicals, antiscalants and additives | Precision chemical dosing for water and wastewater treatment plants |
| Mining & Metallurgy | Process reagents, selected slurries and pulp streams | Reagent feed control and slurry mass flow monitoring within Coriolis application limits |
| Automotive & Industrial | AdBlue (urea), lubricants, fuel additives | Dosing, blending and test stand measurement in automotive and industrial applications |
As China AC Series Coriolis Mass Flowmeter Manufacturers and AC Series Coriolis Mass Flowmeter Factory, we are renowned for manufacturing professional and high-precision industrial instruments. Our expertise lies in providing unparalleled flow measurement resources, backed by over 12 years of experience solving complex applications.
Our precision flow metering devices are used by a diverse range of users, ranging from major oil and gas companies to photovoltaic providers, pharmaceutical manufacturers, and municipal services. We continuously contribute to the development of flow measurement in the domestic energy and chemical industries due to our expertise in measuring variable component gases and peculiar mediums.
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We offer all our products and services at international standards.
+86-18652789521
+86-18052582295
+86-0514-83633600 / 83633900
+86-0514-83633600 / 83633900
No. 11 Xingye Road, Chenji Town Industrial Park, Yizheng, Yangzhou, China
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