Industrial Flow Meters
Eleven Series, DN1 to DN9000, Factory-Direct
Vortex · Swirl · Thermal Mass · Electromagnetic · Turbine · Ultrasonic · Coriolis · Roots · Variable Area · Differential Pressure · Oval Gear
Steam, gas, liquid; one factory, eleven series
5–7 business days, ISO 9001 calibration with every meter
- 91 model pages across eleven series; pick by medium first, then install style.
- Catalog-direct pricing on every version; no minimum order.
- CNEX Ex d IIC T6 Gb, IP65/67/68, EMC 2014/30/EU on standard versions.
Eleven product series
Each card opens the series hub with full model listing, install rules, and configurator.
Vortex (LUGB)
Steam, dry gas, and low-viscosity liquid. The workhorse for boiler header steam, CHP feed, and natural-gas process inlets. Built-in temperature + pressure compensation outputs mass flow directly.
9 vortex models →
Precession Swirl (LUXB)
Low-density gas, wet biogas, hydrogen blends, and tight straight-pipe runs (3D+2D vs vortex 10D+5D). Tolerates wet-gas carry-over where Karman shedding fails.
6 swirl models →
Thermal Mass (TMF)
Gas mass flow direct from heater power. No external T+P stack. 0.1 Nm/s low-flow floor catches idle-leak drift on compressed air, biogas, natural gas, hydrogen, nitrogen, oxygen.
9 TMF models →
Electromagnetic (LEA)
Conductive liquid: water, wastewater, slurry, sanitary, mining process, corrosive chemistry. Full-bore zero-pressure-loss design with PTFE/PFA/PU/rubber/ceramic liner choice.
8 EMF models →
Turbine (LWGY + LWGQ)
Two Series: LWGY liquid (diesel, gasoline, LPG, chemical, sanitary, water; 10 models) and LWGQ gas (natural-gas, fuel-gas, N2, O2, biogas, compressed-air custody; 6 models). Pick your fluid phase first; the routing hub guides the rest.
16 turbine models; route by fluid phase →
Ultrasonic (UFM)
Any liquid regardless of conductivity; including DI, RO, glycol, light hydrocarbon. Sixteen models across three install styles: external mount, inline / spool, insertion + AMR + BTU billing.
16 UFM models →
Coriolis (Mass)
Direct mass + density + temperature in one instrument. The universal pick for HFO, liquid hydrogen (LH₂), LNG, custody-transfer fiscal billing, slurry, and sanitary service. Seven application-focused models covering everything the other series cannot.
7 Coriolis models →
Gas Roots (PD)
Positive-displacement twin-lobe Roots rotors for gas custody billing where turbine fades at the low-flow tail. Natural gas, LPG vapor, industrial gas sub-measurement, and post-upgrade biomethane / RNG; G16 to G1000 per EN 1359 / EN 12480, Ex ia IIC T6 Ga, battery + 4G AMR for unmanned fence inlets.
4 Gas Roots models →
Variable Area (Rotameter)
Metal-tube variable-area rotameter for clean fluid + corrosive + low-flow + gas visual indication. Magnetic float in vertical tapered tube, read by external pointer or 4-20 mA transmitter. The passive (no-power) build is the low-cost ATEX pick for dosing, sample-injection, packaged-skid spot-check, and NFPA 496 purge duty.
4 Variable Area models →
Differential Pressure (DP)
ISO 5167 / GB/T 2624 primary elements for clean liquid, dry gas, steam, and large-bore custody service. Orifice plate, classical venturi, long-radius flow nozzle, averaging pitot tube, multi-hole orifice, and integral orifice versions; widest bore + highest pressure + widest temperature span on the catalog. Transmitter-flexible with buyer-owned Rosemount 3051, Yokogawa EJA, or Honeywell ST3000.
6 Differential Pressure models →
Oval Gear (Volumetric PD)
Volumetric positive-displacement meters for clean-liquid billing. LC oval-gear (DN10-DN200 flagship + high-viscosity + high-temperature + −J precision grade) plus LW small-bore precision gear (DN5-DN25 up to PN40 MPa). Diesel-oil wet-cal per JJG 667-2010. Lane between turbines (clean below 10 cSt) and Coriolis (universal at 2-3× the hardware cost); for lube oil, fuel, asphalt, syrup, and chemical billing.
5 Oval Gear models →Find the right meter by medium
Pick the row that matches the fluid; the series in column 2 is the standard answer.
| Medium / service | Standard series | Cross-series alternative |
|---|---|---|
| Saturated / superheated steam | Vortex (LUGB) | Coriolis (catalog WIP) for ±0.1 % mass |
| Natural gas, biogas, LPG vapor; custody billing | Turbine gas (LWGQ) or Vortex (LUGB) with T+P | Swirl (LUXB) for tight straight-pipe |
| Compressed air, dry process gas, audit | Thermal Mass (TMF) for direct Nm³/h | Vortex or Swirl for higher-velocity service |
| Hydrogen, hydrogen blends, low-density gas | Swirl (LUXB) | TMF for mass-flow output |
| Conductive water, wastewater, slurry (≥5 µS/cm) | Electromagnetic (LEA) | Ultrasonic (UFM) for retrofit without pipe cut |
| DI water, RO water, glycol, light hydrocarbon (≤10 cSt) | Ultrasonic (UFM); conductivity-independent | Turbine (LWGY) for tighter custody on low-viscosity liquid |
| Diesel, gasoline, LPG, chemical liquid; custody billing | Turbine liquid (LWGY) | Coriolis (catalog WIP) for HFO / heavy oil |
| Large-bore liquid (DN1000+) retrofit, no shutdown | Ultrasonic clamp-on or insertion (UFM) | Insertion EMF for conductive liquid |
| Small-bore lab / dosing (sub-DN10) | Ultrasonic small-pipe (UFM-SP) | Small-bore turbine (LWGY) |
| BTU / heat metering (HVAC, district-heat) | Ultrasonic BTU meter (UFM) | Compact Clamp-On BTU version (UFM-CO/EX3) |
| Very-large-bore (DN1000–DN9000) cooling-water, stack gas, blast-furnace gas | Averaging pitot tube (DP) | Insertion ultrasonic for live-line clamp-on retrofit |
| Steam custody / main-steam header (PN10–PN42 MPa) | Classical venturi or flow nozzle (DP) | Vortex (LUGB) with T+P for ±0.5 % mass |
| Existing Rosemount 3051 / Yokogawa EJA parts shelf; new-build primary | Orifice plate (DP); ISO 5167-2 reference geometry | Multi-hole orifice (DP) for noise / short-straight-pipe retrofit |
| Volumetric oil / fuel / asphalt / syrup billing, viscosity 0.6–2000 mPa·s | Oval gear (Volumetric PD) | Coriolis for ±0.1 % custody; high-viscosity oval-gear counterpart above 200 mPa·s |
| Small-bore (DN5–DN25) precision dosing, hydraulic test-stand, PN up to 40 MPa | Mini-bore precision gear (Volumetric PD) | Coriolis for ±0.1 % pharma custody; ultrasonic small-pipe for non-intrusive |
Why factory-direct
Same product, half the cost. Routing through brand-name distributors adds 50–70 % to the unit price.
Direct from factory
No distributor markup. Catalog spec, factory build, ship from China to global by sea or air.
5–7 business days
Lead time from order confirmation to factory dispatch. Standard versions ship in stock.
ISO 9001 cal cert
Every meter ships with a calibration certificate (serial, flow range, accuracy class) and EMC 2014/30/EU compliance.
12-month warranty
Factory warranty against material and workmanship defects. RMA handled directly with the engineering team.
Frequently asked questions
Need engineering help spec’ing the right meter?
Send medium, DN range, P/T conditions, and application. Engineering replies with sized version, model code, and quote in one business day.