LRD-LDE Intelligent Anti-corrosion Electromagnetic Flow MeterAn inductive flowmeter that measures the volume flow rate of conductive medium inside a tube based on Faraday's law of electromagnetic induction. It employs single-chip embedded technology for digital excitation, while simultaneouslyElectromagnetic Flow MeterUtilizing the CAN field bus, this is a domestic first and the technology has reached the advanced level domestically.Intelligent Anticorrosive Electromagnetic Flow MeterSimultaneously meeting on-site display requirements, it also outputs 4-20mA current signals for recording, adjustment, and control. It is now widely used in industrial technology and management departments such as chemicals, environmental protection, metallurgy, medicine, papermaking, and water supply and drainage.Smart Anti-Corrosion Electromagnetic Flow MeterIn addition to measuring the flow rate of general conductive liquids, it can also measure the volume flow of liquid-solid two-phase flows, high-viscosity liquid flows, and salt, strong acid, and strong alkali liquid flows.
LRD-LDEIntelligent Anticorrosion Electromagnetic FlowmeterPerformance Features:
The instrument has a simple and reliable structure with no moving parts, ensuring a long working life.
2. No shunt or clog components; no pressure loss or fluid blockage occurs.
3. No mechanical inertia, quick response, high stability; suitable for automatic detection, adjustment, and programmable systems.
4. Measurement accuracy is unaffected by the type of medium being measured, nor by its temperature, viscosity, density, pressure, and other physical parameter values.
5. Combinations of PTFE or rubber linings with electrode materials such as Hc, Hb, 316L, Ti, etc., can accommodate the needs of various media.
6. Available in various models including pipe-mounted, insertion-type flowmeters.
7. Utilizes EEPROM memory for the storage of measurement and calculation data, ensuring safe and reliable protection.
8. Available in both integrated and separate types.
9. High-definition LCD backlit display.
Section Two:LRD-LDEIntelligent Corrosion-Resistant Electromagnetic Flow MeterTechnical Specifications:
Instrument Accuracy: Pipeline type 0.3 grade, 0.5 grade, 1.0 grade; Insert type 2.5 grade
2. Measuring Medium: All liquids and liquid-solid two-phase fluids with a conductivity greater than 5 μS/cm.
Flow Rate Range: 0.2～8 m/s
4. Working Pressure: 1.6 MPa
5. Environmental Temperature: -40℃ to +50℃
6. Medium Temperature: PTFE Lining ≤ 180℃
Rubber lining material ≤ 65°C
7. Explosion-Proof Mark: Ex m ib d II BT 4
8. Explosion-proof Certificate No.: GYB01349
9. External Magnetic Interference: ≤400 A/m
10. Enclosure Protection: Integrated Type: IP65
Separation Type: Sensor IP68 (waterproof to 5 meters, limited to rubber lining)
Converter IP65
11. Output Signal: 4-20mA DC, Load Resistance: 0-750Ω
12. Communication Output: RS485 or CAN Bus
13. Electrical Connection: M20x1.5 internal thread, φ10 cable hole
14. Power Voltage: 90-220V AC, 24±10%V DC
15. Maximum Power Consumption: ≤10VA
Section 3:LRD-LDESmart Anti-Corrosion Electromagnetic Flow MeterInstrument Selection:
1.LRD-LDEIntelligent Anti-Corrosion Electromagnetic Flow MeterRange confirmation
General Industrial UseElectromagnetic Flow MeterThe flow rate of the medium being tested should be between 2 to 4 m/s. In special cases, the minimum flow rate should not be less than 0.2 m/s, and the maximum should not exceed 8 m/s. If the medium contains solid particles, the usual flow rate should be less than 3 m/s to prevent excessive friction between the lining and electrodes; for viscous fluids, a flow rate greater than 2 m/s can be chosen, as higher flow rates help automatically remove sticky substances from the electrodes, which is beneficial for improving measurement accuracy.
Under the condition that the range Q is determined, the size of the electromagnetic flowmeter diameter D can be decided based on the range of flow rate V mentioned above, which is calculated by the following formula:
Q=πD2V/4
Q: Flow Rate (㎡/h) D: Pipe Inner Diameter V: Flow Velocity (m/h)
Intelligent Anti-Corrosion Electromagnetic Flow MeterThe range Q should be greater than the anticipated maximum flow rate, with the normal flow rate ideally being slightly above 50% of the flowmeter's full-scale range.
| Bore (mm) | Flow Rate Range (m³/h) | Bore (mm) | Flow Range (m³/h) |
| φ15 | 0.06~6.36 | φ450 | 57.23～5722.65 |
| φ20 | 0.11～11.3 | φ500 | 70.65～7065.00 |
| φ25 | 0.18～17.66 | φ600 | 101.74～10173.6 |
| φ40 | 0.45～45.22 | φ700 | 138.47～13847.4 |
| φ50 | 0.71～70.65 | φ800 | 180.86～18086.4 |
| φ65 | 1.19～119.4 | φ900 | ?228.91～22890.6 |
| φ80 | 1.81～180.86 | φ1000 | ?406.94～40694.4 |
| φ100 | 2.83～282.60 | φ1200 | 553.90～55389.6 |
| φ150 | 6.36～635.85 | φ1600 | 723.46～72345.6 |
| φ200 | 11.3～1130.4 | φ1800 | 915.62～91562.4 |
| φ250 | 17.66～176.25. | φ2000 | 1130.4～113040.00 |
| φ300 | 25.43～2543.40 | φ2200 | 1367.78～136778.4 |
| φ350 | 34.62～3461.85 | φ2400 | 1627.78～162777.6 |
| φ400 | 45.22～4521.6 | φ2600 | 1910.38～191037.6 |
2.LRD-LDESmart Anti-Corrosion Electromagnetic Flow MeterElectrode selection
Electrode Materials | Corrosion and wear resistance |
Stainless Steel0Crl8Nil2M02Ti | Used for industrial water, potable water, wastewater, and other mediums with low corrosiveness, suitable for oil, chemical, iron and steel industries, as well as municipal and environmental protection fields. |
HastelloyB | Excellent corrosion resistance to all concentrations of hydrochloric acid below its boiling point, as well as to sulfuric acid, phosphoric acid, hydrofluoric acid, organic acids, and other non-chlorinated acids and bases, and corrosion from non-oxidizing salt solutions. |
HastelloyC | Resistant to corrosion by non-oxidizing acids such as nitric acid, mixed acids, or a mixture of chromic acid with sulfuric acid, as well as oxidative salts like:Fe，”、、Cu”Corrosion from or containing other oxidizing agents, such as hypochlorite solutions above room temperature, and corrosion from seawater. |
Titanium | Withstanding seawater, various chlorides and hypochlorites, oxidizing acids（Including sulfuric acid fuming）Corrosion by organic acids and bases. Not resistant to purer reducing acids.（Sulfuric Acid, Hydrochloric Acid）Corrosion, but if the acid contains an oxidizing agent（As nitric acid,Fc＋＋、Cu＋＋）At that time, corrosion is greatly reduced. |
Tantalum | Excellent corrosion resistance, similar to glass. Resistant to almost all substances except hydrofluoric acid, fuming sulfuric acid, and alkalis.——Cut chemical medium（Including hydrochloric acid, nitric acid, and boiling point saltsl 50℃The following sulfuric acid）Corrosion resistance. Resistant in alkali. |
Platinum/Titanium Alloys | Almost resistance——Cut chemical media, but not suitable for aqua regia and ammonium salts. |
Stainless Steel Coated with Tungsten Carbide | For non-corrosive, high-abrasion media. |
Note: Due to the wide variety of media types and the corrosiveness being influenced by complex factors such as temperature, concentration, and flow rate, this table is for reference only. Users should make their own selections based on actual conditions and conduct corrosion resistance tests on the selected materials, such as the hanging plate test, when necessary. | |
3.LRD-LDEIntelligent Anticorrosive Electromagnetic Flow MeterLining selection
Lining Material | Key Performance Characteristics | Highest Medium Temperature | Application Scope | |
—Body Type | Detachable | |||
Polytetrafluoroethylene (PTFE)F4） | It is the most chemically stable plastic, capable of withstanding boiling hydrochloric acid, sulfuric acid, nitric acid, and aqua regia, as well as concentrated alkalis and various organic solvents. It is not resistant to corrosion by chlorine trifluoride, high-temperature chlorine trifluoride, high-velocity liquid fluorine, liquid oxygen, or autoxidation. | 70℃ | 100℃ 150℃ （Special order required） | 1Corrosive media such as concentrated acids and alkalis. 2Sanitary media. |
Polytetrafluoroethylene (PTFE) Ethylene PropyleneF46） | SameF4, superior wear resistance and pressure-bearing capacityF4。 | As above | ||
Polytetrafluoroethylene (PTFE)Fs） | The upper temperature limit is lower than that of polytetrafluoroethylene, but the cost is also lower. | 80℃ | ||
Neoprene | 1Excellent elasticity, high tensile strength, and good wear resistance.2Resistant to corrosion from general low concentration acids, alkalis, and salts, but not resistant to corrosion from oxidizing mediums. | 80℃ 120℃ （Special Order Required） | Water, wastewater, low-abrasive slurry. | |
Polyurethane rubber | 1Highly wear-resistant. 2Poor corrosion resistance. | 80℃ | Medium strength abrasion-resistant slurry, coal slurry, mud slurry | |
4.LRD-LDESmart Anticorrosive Electromagnetic FlowmeterSelection of import protection flanges and grounding flanges (or grounding rings)
Type of Flanges | Application Scope |
Grounding Flange（Or grounding ring） | For non-conductive piping, such as plastic piping, sensors without grounding electrodes are not required. |
Imported Protective Flanges | Select when the medium has high abrasive properties. |
