Newsletter
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1. product introduction
Electromagnetic flow meter is a kind of induction type flow instrument often used to measure, based on Faraday Law, the volume flow rate ofconductive medium in closed pipelines. With microprocessor and exclusive integrated circuit, TYLD electromagnetic flow meter have the advantages of reliable performance, high accuracy, easy to use, etc.. The high speed CPU and advanced signal processing technology ensure a wide measuring range of 0.01m/s to 12m/s. The infrared remote control realize man-machine conversation, two-line LCD makes the readings and parameter setting more comprehensive and convenient.
TYLD electromagnetic flow meter can be widely applied in industries like chemical, power supply, metallurgical mine, oil, water supply and drainage,paper making, pharmaceutical, food, etc.
2. Characteristics
1. Variable forms for different kinds of working conditions. Compact and remote form; Flanged, flange wafer,clamped, threaded, insertion end connection;DC/AC, battery power supply.
2. High accuracy of ±0.5%.
3. Wide size range of 10mm~3000mm, adapt to different size of pipelines.
4. Full choice of liner to accommodate conductive medium from drinking water to strongly corrosive liquid like sulfuric acid.
5. Measurement is not affected by the density, viscosity, temperature, pressure and electroconductibility of fluid.
6. Two-line LCD, able to display positive and negative instantaneous flow and accumulative flow.
7. No pressure loss. No moving parts.
8. Pulse and 4~20mA standard current output. Multiple choice of communications: RS232, RS485, Modbus, Profibus, HART, etc..
9. Surface mount technology(SMT) technology of converter which possesses self-check and self-diagnose functions.
10. Explosion-proof type can be used at relevant explosion-proof sites. IP68 remote type can be used underwater.
3. Product parameters
| Feature | Flanged type |
| DN size (mm) | 10~600 |
| Measuring medium | Liquid or solid-liquid phase medium with a conductivity higher than 5μs/cm. |
| Measuring accuracy | ±0.5%FS, ±2.5%FS for insertion type |
| Liner material | Polytetrafluoroethylene(PTFE), Fluorinated Ethylene-Propylene(FEP), Polychloroprene Rubber, Polyurethane, Hard Rubber, etc.. |
| Electrode |
Available forms: Fixed or blade form; Available material: Stainless steel 316L, hastelloy B,hastelloy C,titanium alloy,tantalum alloy, platinum-iridium alloy,stainless steel-coated wolfram carbide, etc. |
| Sensor material | Measuring tube: stainless steel; Housing and flange: carbon steel(SS available); Wire: copper; Wire housing: carbon steel Junction box: Aluminium |
| PN Grade | DN15~DN150: 4.0MPa, DN15~DN600: 1.6 MPa, DN200~DN1000: 1.0MPa, DN700~DN3000: 0.6MPa. 16MPa, 25MPa, 32MPa available for special order. |
| Signal output | 4~20mA standard current and pulse. |
| Display | Backlight LCD, able to display positive and negative instantaneous and accumulative flow. Instantaneous for battery powered type. |
| Conditions | Ambient: temperature -20℃~60℃, RH 5%~95%; Working temperature: -20℃~150℃ |
| Flange standard | Chinese national standard GB, DIN, ANSI/ASME, JIS, etc. |
| Power supply | 3.6V |
| Communications | RS485,SRD,GPRS,CDMA. |
| Explosion-proof | ExdmbⅡCT6 |
| Protection Grade | IP65 |
4. Sensor of K type
K type is designed with no flanges, with compact structure and weigh less. The relatively short measuring tube has the advantage of easy cleaning. With all stainless steel body and appropriate liner, it is able to meet the 3A sanitary requirement in food industry. It is often used to measure milk, beverages, etc..
Technical Data
DN size: 10~3000mm
Liner material: PTFE, FEP, Hard Rubber, etc..
Electrode material: SS316L, HB, HC, Ti, Ta, etc..
Medium temperature: -20℃~150℃
Protection grade: IP67, IP68
Flange standard: GB, DIN, ANSI/ASME, JIS, etc.
5. Selection of liner material
| Liner material | Main performances | Applicability |
|
Polytetrafluoroet hylene |
1.It is a plastic material with the stablest chemical properties, resist the corrosion of boiling hydrochloric acid, sulfuric acid, nitric acid, aqua regia, concentrated alkali and many kinds of organic solvent, unable to resist the corrosion of chlorine trifluoride, high temperature vanadyltrifluoride, high flow-rate liquid fluorine, liquid oxygen and ozon; 2.Poor abrasion resistance; 3.Poor ability of anti-negative pressure. |
1.100℃，150℃(special order required); 2.Strong corrosive medium like concentrated acid , alkali, etc.; 3.Sanitary medium |
| polychloropree rubber |
1.Excellent elasticity, high degree of tensile strength, good wear resistance; 2.Able to resist the corrosion of generally low concentration acid, alkali and salt, unable to resist that of the oxidative medium. |
1.80℃,120℃(special order required); 2.General water, polluted water, weak wear ability mud and ore pulp |
| polyurethane rubber |
1.Excellent wear resistance(ten times of the natural rubber’s); 2.Poor abrasion resistance of acid and alkali; 3.Not able to work with water mixed with organic solvent. |
1.＜80℃; 2.Middle and strong wear ability ore pulp, coal pulp, mud, etc.. |
6. Selection of electrode material
| Materials of electrode | Corrosion resistance |
|
Mo-containing stainless steel (0Cr18Ni12Mo2Ti) |
Able to work with medium with weak corrosivity, such as industrial water, living water, polluted water, etc., widely used in industries like oil, chemical, urea, vinylon, etc.. |
| Stainless steel-coated wolfram carbide | Used for medium without corrosivity or with weak wear ability. |
| Hastelloy B(HB) | Good corrosion resistance of different concentration of hydrochloric acid under boiling point, resist the corrosion of non-oxidizing acid, alkali, non-oxidizing salt solution, such as sulfuric acid, phosphoric acid, organic acid, etc.. |
| Hastelloy C(HC) | Resist the corrosion of oxidizing acid, such as nitric acid, mixed acid, the mixture of chromic acid and sulfuric acid, oxidizing salt like Fe+++, Cu++ or other oxidants such as hypochlorite solution above ordinary temperature and seawater. |
| Titanium(Ti) | Resist the corrosion of seawater, all kinds of chloride, hypochlorite, oxidizing acid(include fuming nitric acid), organic acid, alkali, etc., unable to resist the corrosion of purer reducing acid like sulfuric acid and hydrochloric acid. The corrosivity of alpha hydroxy acids will be substantially decreased if there are oxidants such as nitric acid, Fe+++, Cu++ , etc. in it. |
| Tantalum(Ta) | The corrosion resistance of tantalum is as good as glass. Except hydrofluoric acid, fuming nitric acid and alkali, it is able to resist the corrosion of almost any other chemical media. |
| Platinum-iridium alloy | Almost be able to work with any chemical medium other than aqua regia and ammonium salt. |
As there is a great variety of medium and their corrosivity can be affected by complexity factors such as temperature, concentration, flow rate, etc.,
the above two tables are just for reference. Customers should make choices according to the practical situations, if necessary, corrosion resistance
experiment like hanging sheet experiment of simulation materials should be performed.
Selection of liner protection flange and grounding flange
| Type of flange | Applicability |
| Grounding flange | Applicable to non-conductive pipeline like plastic pipeline. However, it is not required for the sensor with polytetrafluoroethylene liner. |
| Inlet protection flange | Applied when the medium has strong wear ability, often used with polyurethane liner. However, it is not applicable to the sensor with polytetrafluoroethylene liner. |
7. electrotyper code
| Model | Item | |||||||||
| TYLD — | □ | □ | -□ | □ | □ | □ | □ | □ | -□ | |
| Diameter | 10-2200mm | |||||||||
| Group | S | Flanged type | ||||||||
| L | Remote type | |||||||||
| Electrode material | M | Steel stainless | ||||||||
| T | Ti | |||||||||
| D | Ta | |||||||||
| H | Hastelloy | |||||||||
| P | Pt | |||||||||
| N | Ni | |||||||||
| Output mode | 0 | No output | ||||||||
| 1 | 4-20mA/1-5KHz | |||||||||
| 2 | 4-20mA | |||||||||
| Liner material | X | Rubber | ||||||||
| F | PTFE | |||||||||
| P | PE | |||||||||
| J | Polyurethane rubber | |||||||||
| Local display | 0 | No local display | ||||||||
| 1 | With local display | |||||||||
| Communications | 0 | No communications | ||||||||
| 1 | RS485 | |||||||||
| 2 | RS232 | |||||||||
| 3 | Mobdus | |||||||||
| 4 | Hart | |||||||||
| Ground connection | 0 | No grounding connection | ||||||||
| 1 | With grounding connection | |||||||||
| 2 | With grounding electrode | |||||||||
| Maximum flow | （n） | Maximum flow（measurement range）m3/h | ||||||||
