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High voltage electromagnetic flowmeter
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ProductIntroduction
1. Overview of high voltage electromagnetic flowmeter products
LDE-RL high voltage electromagnetic flowmeter is a flowmeter based on Faraday's law of electromagnetic induction. It integrates intelligent, small and lightweight integration, multi-function, high precision, high reliability as one of the flow meter products. It can also output 4 to 20mA current signals for recording, adjusting and controlling in the same way as shown in Figure 1.
Two. Characteristics of high voltage electromagnetic flowmeter
1. Strong corrosion resistance. Almost any conductive liquid can be measured.
2, strong anti-interference, almost outside interference.
3. Measurement is not affected by changes in fluid density, viscosity, temperature, pressure and conductivity.
4, there is no pressure loss in the measuring tube, and the requirement of straight pipe section is low.
5. There are no movable parts and no choke components in the pipeline. There is almost no negative pressure loss.
6. Self checking and self diagnosis function.
7. On site, you can modify the range online according to the actual needs of users.
Three, high voltage electromagnetic flowmeter lining selection table
| Lining material | main performance | Maximum medium temperature | Scope of application | |
| One body type | Separate type | |||
| Polytetrafluoroethylene (PTFE) F4) | It is a kind of plastic with very stable chemical properties. It can resist boiling hydrochloric acid, sulfuric acid, nitric acid and aqua regia, and also strong alkali and various organic solvents. It is resistant to corrosion of three fluorine chloride, high temperature three fluorinated chlorine, high velocity liquid fluorine, liquid oxygen and oxygen. | 70 C | 100 C 250 C (special order required) | 1, strong acid, alkali and other strong corrosive medium. 2, health media. |
| Polyfluoroethylene propylene F46) | with F4, the resistance to abrasion and negative pressure is higher than that of F4. | Ditto | ||
| Polyfluorinated ethylene Fs) | The upper limit of temperature is lower than that of polytetrafluoroethylene, but the cost is lower. | 80 C | ||
| Polychloroprene rubber | 1. It has excellent elasticity, high breaking force and good wear resistance. 2, resistance to general low concentration of acid, alkali, salt medium corrosion, do not withstand oxidation medium corrosion. | 80 C 120 C (special order required) | Water, sewage and weakly abrasive slurry. | |
| Polyurethane rubber | One It has excellent wear resistance. | 80 C | Neutral strong wear slurry, coal slurry, mud | |
| Two Corrosion resistance is poor. | ||||
Four. Electrode selection form for high voltage electromagnetic flowmeter.
| Electrode materials | Corrosion resistance and wear resistance |
| Stainless steel0Crl8Nil2M02Ti | It has weak corrosive media for industrial water, domestic water and sewage. It is suitable for petroleum, chemical, steel and other industrial sectors, municipal, environmental protection and other fields. |
| Hastelloy alloy B | It has good corrosion resistance to all concentrations of hydrochloric acid below boiling point, and also is resistant to corrosion of non chlorinated acid, alkali and non oxidizing salt solution such as sulfuric acid, phosphoric acid, hydrofluoric acid and organic acid. |
| Hastelloy alloy C | It can resist the corrosion of non oxidizing acid, such as nitric acid, mixed acid, or the mixture of chromic acid and sulfuric acid, and also oxidizing salts such as: Corrosion of Fc +, Cu + or other oxidants, such as hypochlorite solution above normal temperature, corrosion of seawater. |
| titanium | Resistant to seawater, chloride and hypochlorite, oxidizing acids. (including fuming sulfuric acid), organic acid and alkali corrosion. The corrosion resistance of pure acid (such as sulfuric acid and hydrochloric acid) is not strong, but if the acid contains oxidant (such as nitric acid, Fc +, Cu +), the corrosion will be greatly reduced. |
| tantalum | It has excellent corrosion resistance and is similar to glass. In addition to hydrofluoric acid, fuming sulphuric acid and alkali, it is almost capable. Corrosion of a chemical medium, including hydrochloric acid at boiling point, nitric acid and sulfuric acid below 50 L. Diao in alkali; corrosion resistance. |
| Pt / Ti alloy | Almost all chemical media, but not suitable for aqua regia and ammonium salt. |
| Stainless steel coated tungsten carbide | For non corrosive, strong wear media. |
| Note: due to the variety of media, its corrosion is affected by complicated factors such as temperature, concentration and velocity. Therefore, this table is for reference only. The user should make his own choice according to the actual situation. If necessary, the decay test of the selected materials should be done, such as hanging film test. | |
Five, high voltage electromagnetic flowmeter caliper control table
| caliber Mm | Flow range M /h | caliber Mm | Flow range M /h |
| DN10 | 0.16~2.5 | DN400 | Two hundred and fifty ~ 4000 |
| DN15 | 0.4~6 | DN500 | Four hundred ~ 6000 |
| DN20 | Zero point six ~ 12 | DN600 | Six hundred ~ 10000 |
| DN25 | One ~ 16 | DN700 | Eight hundred ~ 12000 |
| DN32 | 1.6~25 | DN800 | One thousand ~ 16000 |
| DN40 | Two point five ~ 40 | DN900 | One thousand and two hundred ~ 20000 |
| DN50 | Four ~ 60 | DN1000 | One thousand and six hundred ~ 25000 |
| DN65 | Six ~ 120 | DN1200 | Two thousand and five hundred ~ 30000 |
| DN80 | Ten ~ 160 | DN1400 | Three thousand ~ 50000 |
| DN100 | Sixteen ~ 250 | DN1600 | Three thousand ~ 60000 |
| DN125 | 25~400 | DN1800 | Five thousand ~ 60000 |
| DN150 | Forty ~ 600 | DN2000 | Six thousand ~ 100000 |
| DN200 | Sixty ~ 1000 | DN2200 | One thousand three hundred and sixty-seven point seven eight ~ 136778.4 |
| DN250 | One hundred ~ 1600 | DN2400 | One thousand six hundred and twenty-seven point seven eight ~ 162777.6 |
| DN300 | One hundred and sixty ~ 2500 | DN2600 | One thousand nine hundred and ten point three eight~ 191037.6 |
| DN350 | Two hundred ~ 3000 | DN2800 | 2306.56 ~ 236062.8 |
Six. High voltage electromagnetic flowmeter selection table.
| Model | caliber | |||||||
| LDE | 10~2600 | |||||||
| Code name | Installation form | |||||||
| Y | Integral type | |||||||
| F | Split type | |||||||
| Code name | Converter type | |||||||
| ZA | circular | |||||||
| ZB | Square (only for split type) | |||||||
| Code name | Power supply form | |||||||
| AC | (AC) 220V AC 50Hz (90~245V AC 50Hz) | |||||||
| DC | (DC) 24V DC (20~36V DC) | |||||||
| LD | Lithium battery powered (without signal output) | |||||||
| Code name | ||||||||
| I | ||||||||
| F | ||||||||
| Rs | ||||||||
| H | ||||||||
| C | ||||||||
| Medium temperature | ||||||||
| Less than 65 degrees centigrade | ||||||||
| Less than 120 degrees centigrade | ||||||||
| Less than 180 degrees centigrade (only for split type). | ||||||||
| Code name | Lining material | |||||||
| NE | Chloroprene rubber (less than 65 degrees Celsius) | |||||||
| PVC | Polyvinyl chloride (less than 70 degrees Celsius) | |||||||
| PU | Polyurethane wear-resistant (less than 80 degrees Celsius) | |||||||
| PTFE | Polytetrafluoroethylene (less than 180 degrees Celsius) | |||||||
| Code name | Electrode material | |||||||
| 316L | Stainless steel | |||||||
| HC | Hastelloy C | |||||||
| Ti | titanium | |||||||
| Ta | tantalum | |||||||
| Pt | platinum | |||||||
| Warm tip: necessary for flowmeter selection, medium, caliber (flow range), electrode material, lining material and installation method. | ||||||||
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