Vortex flow meter for gas/steam/liquid, no moving parts, non-contact, low pressure loss & maintenance-free.
1. No moving parts, rugged for long-term stable operation
2....
Flow Meter
Product Overview
Industrial flow meters provide continuous volumetric and mass flow measurement for conductive and non-conductive liquids, gases, and steam within closed pipe networks. Engineered for heavy industrial operating conditions, these units integrate direct digital signal processing (DSP) to maintain measurement stability under fluctuating pressure and temperature profiles. Built for direct integration into PLC and DCS control architectures through standardized industrial communication protocols.
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Measurement & Testing Principle
Depending on the selected configuration, the series operates on established physical measurement principles:
Electromagnetic (Magmeter)
Applies Faraday's Law of Electromagnetic Induction. A magnetic field is generated across the pipe, and the velocity of conductive media (conductivity >= 5 uS/cm) induces a proportional voltage sensed by isolated electrodes.
Ultrasonic (Transit-Time)
Measures the time differential between acoustic signals transmitted upstream and downstream, calculating fluid velocity independent of media conductivity.
Vortex
Detects the frequency of von Karman vortex shedding behind a blunt bluff body inserted in the flow, directly proportional to flow velocity for liquids, gases, and steam.
Product Types & Configurations
Inline Electromagnetic Flow Meter
Remote or compact transmitter housing; PTFE/PFA or polyurethane lining; 316L stainless steel or Hastelloy C electrodes.
Clamp-on / Insertion Ultrasonic Flow Meter
Non-invasive or hot-tap installation; engineered for large-diameter retrofits without process shutdown.
Vortex Flow Meter
Integrated temperature and pressure compensation sensors for mass flow calculation of saturated and superheated steam.
Key Features
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Zero Pressure Drop
Inline obstacle-free flow paths (Electromagnetic and Ultrasonic models) eliminate permanent head loss and reduce pumping energy consumption.
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High Turndown Ratio
Operates accurately across a 100:1 flow range, accommodating both peak and minimum baseline flow rates.
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Bi-directional Measurement
Continuously registers forward and reverse flow volumes with dedicated totalizer registers.
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Robust Transmitter Enclosure
Die-cast aluminum housing rated to IP67/NEMA 4X, powder-coated for chemical and salt-spray resistance.
Technical Specifications
|
Specification Parameter |
Standard Configuration |
High-Performance Configuration |
|
Nominal Pipe Size (DN) |
DN15 – DN300 (1/2" to 12") |
DN10 – DN2000 (3/8" to 80") |
|
Base Accuracy |
+/- 0.5% of reading (Liquid) |
+/- 0.2% of reading (Liquid / Custody Transfer) |
|
Process Temperature |
-20°C to +80°C |
Up to +250°C (Vortex Steam variant) |
|
Max Working Pressure |
PN16 / 1.6 MPa (ANSI Class 150) |
PN40 / 4.0 MPa (ANSI Class 300) |
|
Wetted Materials |
316L Stainless Steel, PTFE, Rubber |
Titanium, Hastelloy C-276, Ceramic |
|
Analog Output |
4–20 mA (Active/Passive, isolated) |
4–20 mA with HART Protocol |
|
Digital Communication |
Modbus RTU / RS485 |
Profibus PA, Foundation Fieldbus |
|
Power Supply |
85–265 VAC (50/60Hz) or 24 VDC |
24 VDC loop-powered (selected models) |
|
Enclosure Protection & Ex-Rating |
IP65 |
IP67 / Explosion-Proof Zone 1 |
Applications
Water & Wastewater Treatment
Effluent monitoring, chemical coagulant dosing control, and raw water abstraction.
Chemical Processing
Monitoring aggressive acids, caustics, and solvents requiring corrosion-resistant wetted components.
HVAC & Facility Management
Chilled water loop balancing and energy meter calculation (BTU measurement).
Industrial Utilities
Utility water distribution and non-custody fuel gas monitoring.
Installation & Operating Considerations
Straight Pipe Requirements
Install meters maintaining a minimum of 5 x DN upstream and 3 x DN downstream straight pipe lengths to minimize turbulence caused by elbows, valves, or reducers.
Full Pipe Condition
For electromagnetic and vortex types, the measuring tube must remain completely filled with liquid during operation to avoid measurement errors.
Grounding (Magmeters)
Proper grounding rings or grounding electrodes are mandatory on non-conductive plastic or lined pipes to eliminate stray electrical currents.
Manufacturing & Quality Control
Machining & Welding: Meter bodies are machined on 5-axis CNC centers from forged blanks to maintain wall thickness consistency and eliminate casting porosity. All pressure-retaining welds undergo NDT (Non-Destructive Testing) including dye penetrant inspection.
Calibration Facilities: Every unit is wet-calibrated on gravimetric or volumetric calibration rigs. Calibration rigs maintain an uncertainty of +/- 0.05% and issue individual calibration certificates showing 3-point test logs.
Pressure Testing: Hydrostatic pressure testing is executed at 1.5 x the maximum rated working pressure prior to final assembly.
Customization & OEM
Process Connection Options
Custom flange drillings (EN 1092-1, ANSI B16.5, JIS B2220, Tri-Clamp, or NPT/BSP threaded fittings).
Lining & Electrode Materials
Tailored selection of PFA, ceramic, tantalum, or platinum-rhodium electrodes for extreme chemical or abrasive slurry services.
Private Labeling
Laser-etched custom nameplates, branded firmware boot screens, and tailored technical documentation manuals matching exact client specifications.
Selection Guide
To determine the correct meter configuration for an engineering specification, verify the following parameters before issuing an RFQ:
Fluid Properties
Exact chemical composition, viscosity, and minimum electrical conductivity (if magmeter is selected).
Operational Range
Minimum, normal, and maximum flow rates (m3/h, L/min, or GPM).
Process Conditions
Maximum operating temperature and pressure extremes.
Electrical Environment
Available power supply and required control system interface (HART, Modbus, or basic 4-20mA).
Frequently Asked Questions
Dalian Yheng Technology Co., Ltd. is one of the leading flow meter manufacturers and suppliers in China, also supports customized service. We warmly welcome you to buy high quality flow meter in stock here from our factory. Contact us for more details.