DN300 Electromagnetic Flowmeter
DN300 electromagnetic flowmeter is used to measure the volume flow of conductive liquids and slurries in closed pipes. Including highly corrosive liquids such as acids, alkalis, and salts. This product is widely used in industries such as petroleum, chemical, metallurgy, textile, food, pharmaceutical, papermaking, as well as environmental protection, municipal management, water conservancy construction, etc.
Specification
| Product | Electromagnetic flow meter |
| Model | SUP-LDG |
| Diameter nominal | DN15~DN1200 |
| Nominal pressure | DN15 - DN250, PN ≤1.6MPa |
| DN300 - DN1000, PN ≤1.0MPa | |
| DN1200, PN ≤0.6 MPa | |
| Higher pressure can be customized | |
| Accuracy | ±0.5% F.S. (Flow speed > 1m/s); ±0.5% F.S.±2mm/s (Flow speed <1m/s) |
| Repetitiveness | 0.16% |
| Liner material | Neoprene (CR), Polyurethane (PU), PTFE (F4), PFEP (F46), PFA |
| Electrode material | 316L Stainless Steel, Hastelloy C, Hastelloy B, Ti, Ta, Pt |
| Medium temperature | Neoprene: -10…+60℃ Polyurethane: -10…+60℃ PTFE/FEP: -10…+120℃ PFA: -10…+120℃ |
| Power supply | 85-245VAC，50/60Hz, 22VDC-26VDC |
| Structure type | Compact type, Remote type |
| Ingress protection | IP65, IP68(remote type only) |
| Product standard | JB/T 9248-2015 |
Description
DN300 electromagnetic flowmeter is used to measure the volume flow of conductive liquids and slurries in closed pipes. Including highly corrosive liquids such as acids, alkalis, and salts. This product is widely used in industries such as petroleum, chemical, metallurgy, textile, food, pharmaceutical, papermaking, as well as environmental protection, municipal management, water conservancy construction, etc.
Performance characteristics of DN300 electromagnetic flowmeter:
The measurement accuracy is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity. The sensor induced voltage signal is linearly related to the average flow rate, so the measurement accuracy is high.
There is no flow block in the measuring pipeline, so there is no additional pressure loss; there are no moving parts in the measuring pipeline, so the sensor life is extremely long.
Since the induced voltage signal is formed in the entire space full of magnetic fields and is the average value on the pipeline surface, the straight pipe section required by the sensor is shorter, with a length of 5 times the diameter of the pipeline.
Only the lining and electrodes of the sensor part are in contact with the measured liquid. As long as the electrode and lining materials are reasonably selected, it can be corrosion-resistant and wear-resistant.
The single-chip microcomputer (MCU) and surface mount technology (SMT) used by the LDE converter have reliable performance, high accuracy, low power consumption, stable zero point, and convenient parameter setting. Click the Chinese display LCD to display the cumulative flow, instantaneous flow, flow rate, flow percentage, etc.
The two-way measurement system can measure forward flow and reverse flow. The special production process and high-quality materials are used to ensure that the performance of the product remains stable over a long period of time.
Technical data of the whole machine and sensor:
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Fluid temperature |
—Body type |
70℃ |
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Separate type |
Neoprene lining |
80℃; 120℃ (please specify when ordering) |
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Polyurethane lining |
80℃ |
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PTFE lining |
100℃; 150℃ (please specify when ordering) |
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Fluorinated ethylene propylene (F46) |
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Screening PFA |
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Signal electrode and ground electrode materials |
Stainless steel 0Crl8Nil2M02Ti, Hastelloy C, Hastelloy B, titanium, tantalum, platinum/iridium alloy, stainless steel coated with tungsten carbide |
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Electrode scraper mechanism |
DN300—DN3000 |
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Connection flange material |
Carbon Steel |
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Grounding flange material |
Stainless steel 1Crl8Ni9Ti |
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Imported protective flange material |
DN65—DN150 |
Stainless steel 1Crl8Ni9Ti |
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DN200～DN1600 |
Carbon steel + stainless steel 1Crl8Ni9Ti |
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Sewage flow meter housing protection |
DNl5～DN3000 Separate rubber or polyurethane lined sensor |
IP65 or IP68 |
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Other sensors, - body flow meters and separate converters |
IP65 |
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Spacing (separated type) |
The distance between the converter and the sensor is usually no more than 100m |
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Lining options:
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Sewage flow meter lining material |
Main performance |
Medium temperature |
Scope of application |
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—Body type |
Separate type |
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Polytetrafluoroethylene (F4) |
It is a plastic with stable chemical properties. It can withstand boiling hydrochloric acid, sulfuric acid, concentrated alkali and various organic solvents. |
70℃ |
100℃ 150℃ (special order required) |
1. Strongly corrosive media such as concentrated acid and alkali. 2. Sanitary media. |
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Fluorinated ethylene propylene (F46) |
Same as F4, but with higher wear resistance and negative pressure resistance than F4. |
Same as above |
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Polyvinyl fluoride (Fs) |
The upper limit of applicable temperature is lower than that of polytetrafluoroethylene, but the cost is also lower. |
80℃ |
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Neoprene |
1. Excellent elasticity, high tearing force, good wear resistance. 2. Resistant to corrosion by general low-concentration acid, alkali, and salt media, but not resistant to corrosion by oxidizing media. |
80℃ 120℃ (special order required) |
Water, sewage, slightly abrasive mud and slurry. |
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Polyurethane rubber |
1. Excellent wear resistance. 2. Poor corrosion resistance. |
80℃ |
Neutral and highly abrasive ore slurry, coal slurry, mud |
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Selection of inlet protection flange and grounding flange (or grounding ring):
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Orchid species |
Scope of application |
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Grounding flange (or grounding ring) |
Suitable for non-conductive pipes such as plastic pipes, but not required for sensors with ground electrodes. |
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Imported protective flange |
It is used when the medium is highly abrasive. |
Electrode selection
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Electrode Materials |
Corrosion and wear resistance |
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Stainless steel 0Crl8Nil2M02Ti |
Used for weakly corrosive media such as industrial water, domestic water, sewage, etc., suitable for industrial sectors such as petroleum, chemical industry, steel, as well as municipal administration, environmental protection and other fields. |
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Hastelloy B |
It has good corrosion resistance to hydrochloric acid of all concentrations below the boiling point, and is also resistant to corrosion by non-chlorinated acids, alkalis, and non-oxidizing salt solutions such as sulfuric acid, phosphoric acid, and organic acids. |
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Hastelloy C |
It can resist corrosion from non-oxidizing acids such as nitric acid, mixed acid, or mixed medium of chromic acid and sulfuric acid, as well as corrosion from oxidizing salts such as Fe, Zn, Cu, or other oxidants such as hypochlorite solution above room temperature and seawater. |
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titanium |
It is resistant to corrosion from seawater, various chlorides and hypochlorites, oxidizing acids (including fuming sulfuric acid), organic acids, and alkalis. It is not resistant to corrosion from purer reducing acids (such as sulfuric acid and hydrochloric acid), but if the acid contains oxidants (such as nitric acid, Fc++, Cu++), the corrosion is greatly reduced. |
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Tantalum |
It has excellent corrosion resistance and is very similar to glass. It can resist corrosion from almost all chemical media (including boiling hydrochloric acid, nitric acid and sulfuric acid below 150°C) except fuming sulfuric acid and alkali. It is corrosion-resistant in alkali. |
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Platinum/Titanium Alloy |
It is resistant to almost all chemical media, but is not suitable for aqua regia and ammonium salts. |
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Stainless steel coated with tungsten carbide |
Used for non-corrosive and highly abrasive media. |
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Note: Due to the wide variety of media, their corrosiveness is affected by complex factors such as temperature, concentration, flow rate, etc., so this table is for reference only. Users should make their own choices based on actual conditions, and if necessary, corrosion resistance tests should be conducted on the selected materials, such as hanging plate tests. |
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