I. Product Overview
The SX-LDG electromagnetic flowmeter is primarily composed of parts such as the magnetic circuit system, measuring tube, electrodes, housing, lining, and converter. The display types include split-body and integrated. The series nominal bore range is DN15 to DN3000.
The flow meter consists of a flow sensor and a transmitter. It must be installed at the lowest point of the pipeline or a vertical section of the pipeline, and it must be done so under full pipeline conditions. The requirements for straight pipeline sections are 5D before and 3D after, to ensure normal operation and accuracy. Its measurement principle does not rely on flow characteristics; turbulence and vortices in the non-measurement area (such as elbows, tangential throttles, or upstream half-open cutoff valves) have no effect on the measurement. However, steady-state vortices within the measurement area can affect measurement stability and accuracy, and measures must be taken to stabilize the velocity distribution.
Section II: Product Description
LD Intelligent Electromagnetic Flow Meters are designed for measuring the volume flow of conductive liquids with conductivity greater than 5 uS/cm, such as water, slurry, ore slurry, and other general conductive liquids, as well as flow rates of strong corrosive liquids like strong acids and alkalis. They are widely used in industrial sectors such as chemicals, chemical fibers, petrochemicals, metallurgy, light industry, papermaking, pharmaceuticals, and other fields.
Section 3: Measurement Principle
Based on Faraday's Law of electromagnetic induction, a conductive liquid generates an induced electromotive force when it moves through a magnetic field by cutting the magnetic lines of force. A pair of electrodes are installed on both sides of the inner wall of a conduit perpendicular to the axis of the measuring tube and the magnetic lines of force. When the conductive liquid flows at a velocity ∨ through a magnetic field perpendicular to the direction of flow, it induces a voltage proportional to the average flow rate. This induced voltage signal is detected by two or more electrodes in direct contact with the liquid, transmitted through a cable to a converter for intelligent processing, and then displayed on an LCD or converted into a standard 4-20mA and 0-1KHz output signal.
IV. Main Technical Parameters
| Project | Details |
|---|---|
| Nominal Bore Series DN (mm) | Pipe-style PTFE Lining: 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600 Pipe-type rubber lining: 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 500, 600, 800, 1000, 1200 (special sizes available upon request) |
| Flow Direction | Net flow in both directions |
| Range ratio | 150：1 |
| Repetitive error | ±0.1% measurement value |
| Precision Grade | Pipe Type: 0.5 Grade, 1.0 Grade |
| Temperature of the medium being tested | Standard Rubber Lining: -20~60℃ High-temperature rubber lining: -20~90℃ PTFE Ethylene Liner: -30~100℃ High-Temperature PTFE Lining: -30~180℃ |
| Rated working pressure | Pipe type: DN10-65: ≤2.5 MPa DN80-DN150：≤1.6MPA DN200-1200：≤1.0MPA |
| Flow Measurement Range | Flow rate range is 0.3-15 m/s |
| Conductivity Range | The fluid being tested has a conductivity of ≥5us/cm, suitable for most water-based medium components with a conductivity range of 200-800 us/cm. |
| Output Current and Load Resistance | 4-20mA full isolation, load resistance < 750 ohms, pulse frequency 0-1KHz opto-isolation, OCT external source ≤ 35 / collector current max. 250mA when conducting |
| Electrode Material | Molybdenum-containing stainless steel, titanium (Ti), tantalum (Ta), Hastelloy (H), platinum (Pt), or other special electrode materials |
| Electrode Material | Corrosion resistance |
|---|---|
| 316L | Applicable: 1. Potable water, industrial water, well water, urban wastewater 2. Weakly corrosive acid, alkali, and salt solutions |
| Hastelloy B | Applicable: 1. Hydrochloric acid (concentration less than 10%), ammonium hydroxide alkaline solutions of all concentrations 2. Sodium Hypochlorite (concentration less than 50%) 3. Phosphoric Acid, Organic Acids Not applicable: Nitric acid |
| Hastelloy C | Applicable: 1. Mixed acid solutions such as chrome acid and sulfuric acid blends 2. Oxidizing salts such as Fe++, Cu++ |
| Titanium | Applicable: 1. Salt, such as (1) Chlorides (chlorides/magnesium/aluminum/calcium/ammonium/titanium, etc.) (2) Sodium salt, potassium salt, ammonium salt, hypochlorite, seawater 2. Less than 50% KCL, Ammonium ChlorideBaCl₂Alkali solution Not Applicable: Hydrochloric Acid, Sulfuric Acid, Phosphoric Acid, Hydrofluoric AcidBarium oxide alkaline solution |
| Tantalum | Applicable: 1. Hydrochloric acid (concentration less than 40%), dilute sulfuric acid and concentrated sulfuric acid (excluding fuming sulfuric acid) 2. Chlorine dioxide, magnesium chloride, hypochlorous acid, lead acetate, etc. 3. Nitric acid (including fuming nitric acid) and other oxidizing acids, with temperatures below 80 Inappropriate: alkali, H Chloric Acid |
| Platinum | Suitable for almost all acid, alkali, and salt solutions (including fuming sulfuric acid, fuming nitric acid) Not applicable: Wang Water, Ammonium Salts |
| Lining Material Categories | Name | Symbol | Performance | Highest operating temperature | Suitable for liquids | Applicable Diameter |
|---|---|---|---|---|---|---|
| Rubber | Chloroprene rubber | CR | Medium wear resistance, withstands corrosion from general low concentrations of acids, alkalis, and salts. | ＜80℃ | Potable Water, Industrial Water, Seawater | DN50 - 2200 |
| Rubber | Polyamide脂 | PU | Excellent wear resistance, poor resistance to acids and alkalis. | ＜60℃ | Pulp, mineral slurry, and other slurries | DN25 - 500 |
| Fluoroplastic | Polytetrafluoroethylene (PTFE) | F4 or PTFE | Chemically stable, resistant to corrosion by boiling acid, sulfuric acid, aqua regia, and concentrated alkali. | ＜180℃ | Highly corrosive acidic and alkaline salt liquids | DN25 - 1200 |
| Fluoroplastic | Perfluoroethylene Propylene (Teflon FEP) | F46 or FEP | Chemical properties are slightly inferior to F4 | ＜120℃ | Corrosive acid, alkali, and salt liquids | DN15 - 200 |
| Fluoroplastic | Teflon ethylene and ethylene | F40 or ETFE | Chemical properties are slightly inferior to F4. | ＜120℃ | Corrosive acid, alkali, and salt liquids | DN250 - 2200 |
| Plastic | Polyethylene | PO | Chemical properties are stable | ＜60℃ | Wastewater | DN50 - 2200 |
| Plastic | Polysulfone | PPS | - | ＜110℃ | Hot Water | DN50 - 2200 |
Flow Rate Selection Chart
| Bore Diameter (mm) | Minimum Flow Selection (m³/h) | Typical Full Load Flow Rate Selection (m³/h) |
|---|---|---|
| 10 | 0.10 | 0.5、0.6、0.8、1.0、1.2、1.6、2.0、2.5 |
| 15 | 0.20 | 1.0、1.2、1.6、2.0、2.5、3.0、4.0、5.0、6.0 |
| 20 | 0.35 | 2.0、2.5、3.0、4.0、5.0、6.0、8.0、10.0、12.0 |
| 25 | 0.55 | 3.0、4.0、5.0、6.0、8.0、10.0、12.0、14.0、16.0 |
| 32 | 1.0 | 5.0、6.0、8.0、10.0、12.0、16、20、25 |
| 40 | 1.5 | 8.0、10.0、12、16、20、25、30、40 |
| 50 | 2.5 | 12、16、20、25、30、40、50、60、80、100、120 |
| 65 | 4.0 | 20、25、30、40、50、60、80、100、120 |
| 80 | 5.5 | 25、30、40、50、60、80、100、120、160 |
| 100 | 8.5 | 40、50、60、80、100、120、160、200、250 |
| 125 | 14 | 60、80、100、120、160、200、250、300、400 |
| 150 | 20 | 100、120、160、200、250、300、400、500、600 |
| 200 | 35 | 160、200、250、300、400、500、600、800、1000 |
| 250 | 55 | 200、250、300、400、500、600、800、1000、1200、1600 |
| 300 | 80 | 300、400、500、600、800、1000、1200、1600、2000、2500 |
| 350 | 105 | 400、500、600、800、1000、1200、1600、2000、2500、3000 |
| 400 | 135 | 500、600、800、1000、1200、1600、2000、2500、3000、4000 |
| 450 | 175 | 600、800、1000、1200、1600、2000、2500、3000、4000、5000 |
| 500 | 215 | 800、1000、1200、1600、2000、2500、3000、4000、5000、6000 |
| 600 | 305 | 1000、1200、1600、2000、2500、3000、4000、5000、6000、10000 |
| 700 | 415 | 1200、1600、2000、2500、3000、4000、5000、6000、10000、12000 |
| 800 | 545 | 1600、2000、2500、3000、4000、5000、6000、10000、12000、16000 |
| 900 | 690 | 2000、2500、3000、4000、5000、6000、10000、12000、16000、20000 |
| 1000 | 850 | 2500、3000、4000、5000、6000、10000、12000、16000、20000 |
| 1200 | 1250 | 6000、10000、15000、20000、25000、30000、35000 |
| 1400 | 1700 | 8000、10000、20000、30000、40000、50000 |
| 1600 | 2500 | 10000、20000、30000、40000、50000、60000 |
| 1800 | 3000 | 15000、20000、30000、40000、50000、60000、70000、80000 |
| 2000 | 3500 | 20000、40000、60000、80000、100000 |
| 2200 | 4000 | 20000、40000、60000、60000、80000、100000、120000 |
Dimensions
| Bore Diameter (mm) | A（mm） | D（mm） | Do（mm） | n - Φ |
|---|---|---|---|---|
| 10 | 150 | 90 | 60 | 4×14 |
| 15 | 150 | 95 | 65 | 4×14 |
| 20 | 150 | 105 | 75 | 4×14 |
| 25 | 150 | 115 | 85 | 4×14 |
| 32 | 150 | 140 | 100 | 4×18 |
| 40 | 200 | 150 | 110 | 4×18 |
| 50 | 200 | 165 | 125 | 4×18 |
| 65 | 200 | 185 | 145 | 8×18 |
| 80 | 200 | 200 | 160 | 8×18 |
| 100 | 250 | 220 | 180 | 8×18 |
| 125 | 250 | 250 | 210 | 8×18 |
| 150 | 300 | 285 | 240 | 8×22 |
| 200 | 350 | 340 | 295 | 8×22 |
| 250 | 400 | 395 | 350 | 12×22 |
| 300 | 460 | 445 | 400 | 12×22 |
| 350 | 460 | 505 | 460 | 16×26 |
| 400 | 600 | 565 | 515 | 16×26 |
| 450 | 600 | 615 | 565 | 20×26 |
| 500 | 600 | 670 | 620 | 20×26 |
| 600 | 600 | 780 | 725 | 20×30 |
| 700 | 600 | 895 | 840 | 20×30 |
| 800 | 800 | 1015 | 950 | 24×33 |
| 900 | 900 | 1115 | 1050 | 24×33 |
| 1000 | 1000 | 1230 | 1160 | 28×33 |
| 1200 | 1200 | 1405 | 1340 | 28×36 |
| 1400 | 1400 | 1630 | 1560 | 32×36 |
| 1600 | 1600 | 1830 | 1760 | 36×36 |
| 1800 | 1800 | 2045 | 1970 | 36×36 |
| 2000 | 2000 | 2265 | 2180 | 48×42 |
| 2200 | 2200 | 2405 | 2315 | 52×45 |
The SX-LDG electromagnetic flowmeter, with its scientific structural design, reliable measurement principle, and extensive technical parameters, offers an accurate and stable solution for measuring the flow of various conductive liquids.
Other parameters
| Project | Details |
|---|---|
| Model | SX-LDG-1200 |
| Custom Processing & Tailoring | No |
| Type | Electromagnetic |
| Measurement Range | 0.5~120000 m³/h |
| Precision Grade | ±0.1% |
| Nominal Bore Size | DN1200 mm |
| Applicable Medium | Water, pulp, acids, alkalis, salts, corrosive liquids, etc. |
| Work pressure | ≤2.5 MPa |
| Operating Temperature | ＜180 ℃ |
| Flow Direction | Net flow in both directions |
| Range Ratio | 150:1 |
| Rated Pressure | PN≤2.5MPa |
Product Packaging and After-Sales Service
Our company packages this series of products in wooden cases, which is both convenient for transportation and provides excellent protection for the products. In terms of quality and service assurance, we solemnly promise:
If you have any questions about the product, please call our 24-hour service hotline at 15821856533, or log in to our website. Our company will arrange an engineer to answer your questions as soon as possible. We always adhere to the philosophy of wholeheartedly serving you and are committed to providing excellent service.
Logistics Distribution
We offer diverse logistics and delivery methods, including SF Express, YTO Express, Yunda Express, and national rail and road transportation. You can freely choose based on your specific needs. Delivery destinations cover major cities, transit points, and ports both domestically and internationally.
DeclarationAll text, data, and images in this article are for reference only. For specific product performance parameters, structural dimensions, prices, and other detailed information, please contact the relevant department personnel of our company. 24-hour service hotline: 15821856533.
Shanghai Hongba Electric Valve Co., Ltd. was established on April 19, 2021, with its registered address at 33, Lane 159, Taiye Road, Fengxian District, Shanghai. Our business scope includes the general operation of selling valves and sockets, pumps and vacuum equipment, pipeline transportation equipment, plastic products, electrical machinery and equipment, electronic products, instruments and meters, distribution switches and control equipment, metal products, wholesale of hardware products, and retail of hardware products.Welcome to inquire and purchase from a wide range of clients!
