Coriolis Mass Flow Meters
Direct Mass + Density + Temperature for the Broadest Medium Range on Site
Accuracy ±0.1 / 0.15 / 0.2 / 0.5 % of rate options
Pipe DN3 to DN150 standard (13 published sizes) + DN1 lab grade at 100 g/h + DN2 / DN200 / DN250 / DN300 by quote
Medium temperature −269 to +450 °C
- HFO to LH2, sanitary to slurry, hydrogen H35/H70 to LNG terminal; covered by one Series
- Working pressure up to 100 MPa (CMASS hydrogen high-pressure threaded build)
- Ex d [ia] IIC T6 Gb hazardous-area standard, IP67, ISO 9001 cal cert with every meter
The universal mass-flow family. Mass + density + temperature in one instrument; DN1-DN300; ±0.1 % custody to ±0.5 % gas; 0.6 to 100 MPa (H70 hydrogen); −269 °C (LH2) to +450 °C (heated asphalt). No straight-pipe requirement. Lead time 5–7 business days.
Coriolis Mass Flow Meter models
Seven application-focused models across the Coriolis range. Each card carries its own bore range, pressure spec, and scenario; pick the closest duty and the configurator inside each model page returns the build sheet.
Hydrogen Mass Flow Meter
High-pressure threaded Coriolis for H35 (350 bar) and H70 (700 bar) hydrogen refueling station dispenser custody. 9/16-18 UNF and 13/16-16 UNF industry-standard fittings; ±0.1 % of rate for OIML R 139 metrology pathway. Same hardware fits fuel-cell test stand and electrolyser outlet.
View configuration →Cryogenic Coriolis Flow Meter
LN2, LOX, LAr, LNG, ethylene, and liquid-hydrogen service from terminal regasification to ASU plant headers. The Coriolis principle reads cryogenic liquid directly without phase-change concerns; vacuum-jacketed sensor option keeps the measuring tube cold-stable.
View configuration →Custody Transfer Mass Flow Meter
Custody Coriolis for tank-farm loading, pipeline custody, and refinery batch transfer. ±0.1 % of rate, dual-pulse output for prover loop, density and temperature output for net-volume correction, audit-trail logger for fiscal billing submission.
View configuration →HFO & Heavy-Oil Mass Flow Meter
Heavy fuel oil 30–380 cSt, IFO 380 / IFO 180, asphalt, and waxed crude service. Thermal-insulation jacket carries steam at ≤200 °C to keep the measuring tube above pour point. Fills the LWGY liquid-turbine ≤10 cSt out-of-range routing.
View configuration →Sanitary Coriolis Flow Meter
Brewery, dairy, fine chemical, and pharmaceutical service. Triclamp hoop-clamp process connections, polishable 316L wetted parts, CIP / SIP compatible. Factory ships sanitary build; buyers arrange sanitary certification via notified body if the local regime requires it.
View configuration →Straight-Tube Coriolis Flow Meter
Cement slurry, drilling mud, lime slurry, and particulate-laden chemical flow. Single full-bore straight tube has the lowest pressure drop in the Coriolis range and no bend to trap particles. Tolerates wear that damages U-tube bends.
View configuration →CNG Mass Flow Meter
CNG refueling station dispenser custody, mother-daughter trade transfer, and compressor outlet metering. Shares the high-pressure threaded CMASS hardware; ±0.2 % of rate standard, ±0.1 % custody option, dual-pulse output for trade-transfer prover.
View configuration →How Coriolis flow meters work
A Coriolis mass flow meter reads mass directly via the Coriolis force on a vibrating tube. A drive coil at the tube apex drives resonant vibration. Fluid moving through the vibrating tube acquires a Coriolis acceleration perpendicular to both vibration and flow; the reaction force twists the inlet and outlet sides in opposite phase, and two pickup coils read the phase shift. Phase shift is proportional to mass flow through a factory-locked K-factor.
The same tube reads density via resonant-frequency shift through a factory-tested calibration pair (D1, D2). An embedded RTD reads medium temperature. Outputs mass flow (kg/h, t/h), density-corrected volumetric flow, density (g/cm³), and temperature on 4-20 mA, with the full process variable set on RS-485 Modbus / HART. No straight-pipe requirement; the Coriolis principle is profile-independent.
When to specify Coriolis
Match the duty to the table. Coriolis fits media outside the range of every other meter family.
| Service | Coriolis (this range) | Alternative meter family |
|---|---|---|
| Heavy fuel oil & IFO 380 (30–380 cSt) | Standard pick (insulation-jacket build) | LWGY out-of-range above 10 cSt |
| Cryogenic LN2 / LOX / LNG / LH2 (−200 to −269 °C) | Standard pick (low-temperature build) | All other families out-of-range below −50 °C |
| Custody-transfer fiscal billing (±0.1 % of rate) | Standard pick (custody build, OIML pathway) | Turbine custody (LWGY/LWGQ) at ±0.5 % when cost matters more than accuracy |
| Hydrogen refueling H35 / H70 (up to 100 MPa) | Standard pick (CMASS threaded high-pressure build) | No other family covers 100 MPa with custody accuracy |
| Sanitary CIP / SIP service (F&B, pharma) | Standard pick (sanitary Triclamp build) | Sanitary EMF (LEA) for conductive media; sanitary turbine for non-conductive solvent |
| Slurry & particulate-laden flow | Standard pick (straight-tube build) | EMF (LEA) with PU / ceramic liner for conductive slurry |
| Non-conductive solvent (< 5 µS/cm) | Standard pick (universal medium range) | Turbine (LWGY) for clean solvent ≤ 10 cSt; ultrasonic for retrofit |
| Two-phase service (stable gas-liquid ratio) | Acceptable (±2 % on stable two-phase) | Multiphase meter or vortex with phase-separation pre-conditioning for slug-cycling |
| Clean liquid ≤ 10 cSt (diesel, gasoline, kerosene) | Acceptable, but overkill on cost | Turbine (LWGY) for cost-effective ±0.5 % at lower capex |
| Steam, dry gas above DN15 (general process) | Acceptable for ±0.5 % custody only | Vortex (LUGB) for cost-effective process metering; gas turbine (LWGQ) for natural-gas billing |
Application-to-build map.
Seven Coriolis model pages under this hub. The map shows catalog coverage and the recommended model page per duty.
| Service range | Bore & build | Model page |
|---|---|---|
| Hydrogen H35 (350 bar) HRS dispenser custody | DN3–DN15 threaded UNF, up to 100 MPa, ±0.1 % rate | Hydrogen Mass Flow Meter |
| Hydrogen H70 (700 bar) HRS dispenser custody | DN3–DN8 threaded UNF, up to 100 MPa, ±0.1 % rate | Hydrogen Mass Flow Meter |
| LNG terminal regasification, ASU LOX / LN2 | DN25–DN200 low-temp, −200 to +200 °C, vacuum-jacket option | Cryogenic Coriolis |
| Liquid hydrogen (LH2) at −253 °C electrolyser outlet | DN10–DN50 cryogenic, −269 to +100 °C, 316L vacuum-jacket | Cryogenic Coriolis |
| Refinery tank-farm fiscal loading, pipeline batch | DN50–DN300, ±0.1 % of rate, dual-pulse output | Custody Transfer Coriolis |
| Heavy fuel oil bunker, refinery hot residue | DN25–DN200 insulation-jacket, ≤350 °C, 30–380 cSt | HFO Mass Flow Meter |
| Brewery, dairy, pharmaceutical CIP / SIP | DN15–DN80 Triclamp, polishable 316L, ≤150 °C | Sanitary Coriolis |
| Cement slurry, lime slurry, drilling mud | DN25–DN150 straight-tube, full bore, particulate-tolerant | Straight-Tube Coriolis |
| CNG refueling station, mother-daughter transfer | DN8–DN15 threaded UNF, up to 25 MPa, ±0.2 % rate | CNG Mass Flow Meter |
All Coriolis models share Ex d [ia] IIC T6 Gb hazardous-area, IP67 ingress, 4-20 mA + Pulse + RS-485 Modbus + HART outputs, EMC 2014/30/EU compliance, ISO 9001 calibration certificate with each meter, 5–7 business day lead time. Accuracy class, body material, pressure spec, transmitter tier, and process connection are specified at quote.
Universal Coriolis install requirements
Install rules across all Coriolis models. Model-specific variations (insulation-jacket steam supply, hydrogen-fitting torque, sanitary clamp orientation) live on each model page.
- No straight-pipe requirement Coriolis is profile-independent; no inlet or outlet minimum. Major advantage over turbine, vortex, and ultrasonic (which need 5D-20D upstream). Run the sensor close to the upstream elbow or valve.
- Match tube orientation to the medium phase Liquid service: install with the U-tube apex pointing vertically downward so the bore stays full and bubbles drain. Gas service: install with the apex pointing vertically upward so condensate drains away from the measuring tube. Particulate service: install in flag orientation so particles drain without settling on the tube wall.
- Fix pipe support both sides of the sensor The vibrating tube is sensitive to external pipe vibration. Install pipe brackets at fixed concrete or steel supports within one pipe-diameter of each sensor flange. On rotating-equipment lines or pumps with strong harmonic vibration, isolate the sensor section with flexible bellows or hose.
- Run a zero-point check after first commissioning Install stress can shift the zero point by 1 to 3 × the published zero-stability value. After the line is in service and at process temperature, stop flow (close upstream and downstream valves), keep the sensor wetted, and let the line settle for 3 to 5 minutes. Run the zero-correction sequence per the transmitter manual. Repeat at six-month intervals for custody service.
- Earth-ground the sensor housing on a dedicated line Cross-section ≥ 1 mm². Do not bond welding-system ground to the meter ground during pipe work; transient currents damage the pickup coils. On hazardous-area service, follow the explosion-proof wiring practice in the transmitter manual: lock the cover after wiring, never open the transmitter cover when energised.
Frequently asked questions
Need help selecting a Coriolis flow meter?
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