The LDG Series Economy Electromagnetic Flowmeter is a cost-effective, general-purpose magmeter for electrically conductive liquids （≥5 μS/cm).
It consists of a sensor and a transmitter, and is suitable for water, wastewater, chemically aggressive media (acids and alkalis), as well as uniform liquid–solid two-phase fluids such as suspensions and pulp.
Based on Faradayʼs law of electromagnetic induction, the LDG generates a magnetic field across the measuring tube. As conductive liquid flows through this field, an induced voltage proportional to flow velocity is detected by electrodes and converted into volumetric flow.
With no moving parts, full-bore construction and no internal obstructions, LDG introduces negligible additional pressure loss, while its fully digital signal processing, pulse excitation and low-power electronics provide stable, repeatable measurement in everyday industrial applications.
| Item | Description |
| Measuring principle | Electromagnetic, based on Faraday’s law |
| Product positioning | Economy, general-purpose magmeter for utilities and standard process duties |
| Measured media | Conductive liquids ≥ 5 μS/cm, including slurries, suspensions and pulp |
| Accuracy | ±0.5 % of rate |
| Repeatability | ≤ 0.15 % of rate |
| Velocity range | 0.1...10 m/s |
| Nominal diameters | DN2.5...DN2000 (approx. 1/8"...80") |
| Process connectors | Flanged, hygienic, insertion type (depending on version) |
| Connection standards | DIN; ANSI/ASME; JIS |
| Medium temperature range | -20...+180 °C (configuration-dependent) |
| Nominal pressure | PN10...40; ANSI 150 / 300; JIS 10K / 20K |
| Body materials | Carbon steel, 304, 316 stainless steel |
| Lining materials | CR, PU, PTFE, PFA |
| Electrode materials | 316 stainless steel, Titanium, Tantalum, Hastelloy, Pt-Ir |
| Protection class | IP65 / IP67 / IP68 (model-dependent) |
| Explosion protection | Ex d (explosion-proof versions available) |
| Power supply options | 24 V DC; 110...240 V AC; 3.6 V built-in battery (battery-powered version) |
| Output signals | 4-20 mA and pulse output |
| Communication protocols | Modbus (RS-485), Profibus, HART; GPRS (on selected models) |
| Electrical interface | M20×1.5; 1/2" NPT |
| Certifications | ISO, PCEC, CE, ATEX, SIL (model- and region-dependent) |
| Category | Specification / Option | Notes |
| Hydraulic design | Full-bore, no moving or throttling parts | Virtually no additional pressure loss; suitable for slurry and suspension services |
| Signal processing | Fully digital processing with pulse excitation | High noise immunity, stable zero and good low-flow performance |
| Electronics | SMD devices, SMT technology | High reliability and low power consumption |
| Range setting | User-configurable measuring range | Adapts to different pipeline sizes and operating conditions |
| Display & HMI | Back-lit LCD with full menu | Convenient setup and diagnostics on site (language per configuration) |
| Outputs | 4-20 mA+ pulse | Integration with PLC/DCS, batch controllers and totalizers |
| Communication | RS-485 Modbus, Profibus, HART, optional GPRS | Supports local control systems and remote data acquisition |
| Protection & Ex | IP65/67/68, Ex d | Outdoor, buried chamber and designated hazardous area use where applicable |
| Industry / Sector | Medium / Service | Typical Use |
| Municipal water & wastewater | Raw water, treated water, sewage, sludge | Flow monitoring on distribution mains, plant inlets/outlets and sludge lines |
| Industrial utilities | Cooling water, process water, firewater | General line metering and consumption monitoring |
| Chemical & Petrochemical | Acids, alkalis, conductive process liquids | Standard process lines where material compatibility is ensured |
| Mining & Minerals | Slurries, tailings, process water | Flow monitoring of conductive slurries (with appropriate lining/electrode selection) |
| Pulp & Paper | Stock suspensions, pulp, white/black liquor | Flow control in stock preparation and liquor recovery circuits |
| Food & Beverage (utilities) | Process water, CIP return, conductive liquids | Non-hygienic utility services and plant water networks |
As China LDG Economy General-Purpose Electromagnetic Flowmeter Manufacturers and LDG Economy General-Purpose Electromagnetic 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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