Introductions
Wafer electromagnetic flow meter also said clamped-electromagnetic-flow-meter, It is a kind of volume flow meter. It uses a new generation of special high-quality lining technology and a special mirror-polished PFA lining, which is especially suitable for the measurement of viscous pulp and gypsum slurry. Its detachable electrode makes maintenance more convenient.
The product is based on Faraday’s law of electromagnetic induction, used to measure the conductance greater than 20 μS/cm volume of conductive liquid flow. In addition to measuring the general volume of conductive liquid flow, but also can be used to measure strong acid, alkali and other strong corrosive liquids and mud, pulp, etc.
Main technical Parameters
| Diameter | φA(mm) | φB(mm) | φC(mm) | H(mm) | L(mm) |
| DN25 | 60.5 | 68 | 22 | 295 | 100 |
| DN32 | 68.5 | 76 | 30 | 303 | 100 |
| DN40 | 74.5 | 89 | 36 | 316 | 100 |
| DN50 | 90.8 | 102 | 48 | 329 | 100 |
| DN65 | 109.8 | 119.5 | 64 | 346.5 | 150 |
| DN80 | 120.7 | 133 | 77 | 360 | 150 |
| DN100 | 150.2 | 159 | 102 | 386 | 150 |
| DN125 | 174.8 | 190 | 121 | 417 | 200 |
| DN150 | 204.7 | 219 | 147 | 446 | 200 |
| DN200 | 257.8 | 273 | 207 | 500 | 200 |
| Main Performances Parameters | |
| Size | DN25mm-DN200mm |
| Nominal Pressure | 1.6Mpa |
| Accuracy | ±0.5%(Standard) |
| ±0.3% or ±0.2%(Optional) | |
| Liner | PTFE,FEP,PFA |
| Electrode | SUS316L, Hastelloy B,Hastelloy C, Titanium,Tantalum, Platinum-iridium |
| Structure Type | Integral type,remote type, submersible type, ex-proof type |
| Medium Temperature | -20~+60degC(Integral type) |
| Remote type(PTFE/PFA/FEP) -10~+160degC | |
| Ambient Temperature | -20~+60degC |
| Ambient Humidity | 5~90%RH(relative humidity) |
| Measuring Range | Max 15m/s |
| Conductivity | >5us/cm |
| Protection Class | IP65(Standard); IP68(Optional for remote type) |
| Output Signal | 4-20mA pulse relay |
| Communication | MODBUS RTU RS485,HART(Optional),GPRS/GSM(Optional) |
| Power Supply | AC220V(Can be used for AC85-250V)DC24V(Can be used for DC20-36V)DC12V(Optional),Battery Powered 3.6V(Optional) |
| Power Consumption | <20W |
| Explosion Proof | ATEX ExdIl T6Gb |
| Electrode material | Applications |
| SUS316L | Applicable in water, sewage and low corrosive mediums. Widely used in industries of petrol, chemistry, carbamide,etc |
| Hastelloy B | Having strong resistance to hydrochloric acid of any consistance which is below bioling piont. Resistable against vitriol, phosphate, hydrofluoricacid,organic acid etc which are oxidable acid,alkali and non-oxidable salt. |
| Hastelloy C | Be resistant to oxidable acid such as nitric acid, mixed acid as well as oxidable salt such asFe+++,Cu++and sea water. |
| Titanium | Applicable in seawater,and kinds of chloride, hypochlorite salt, oxidable acid (including fuming nitric acid), organic acid,alkali etc. Not resistant to a pure reducing acid(such as sulphuric acid, hydrochloric acid corrosion.But if acid contains antioxidant(such as Fe+++,Cu++) is greatly reduce corrosion. |
| Tantalum | Having strong resistance to corrosive mediums that is similar with glass.Almost is applicable to all chemical mediums. Except for hydrofluoric acid,oleum and alkali. |
| Platinum-iridium | Almost be applicable in all chemical mediums except for ammonium salt. |
| Electrode material | Applications |
| SUS316L | Applicable in water, sewage and low corrosive mediums.Widely used in industries of petrol, chemistry, carbamide,etc |
| Hastelloy B | Having strong resistance to hydrochloric acid of any consistance whichis below bioling piont. Resistable against vitriol,phosphate,hydrofluoricacid, organic acid etc which are oxidableacid, alkali and non-oxidable salt. |
| Hastelloy C | Be resistant to oxidable acid such as nitric acid, mixed acid as well as oxidable salt such asFe+++,Cu++and sea water. |
| Titanium | Applicable in seawater,and kinds of chloride, hypochlorite salt, oxidable acid (includingfuming nitric acid), organic acid, alkali etc. Not resistant to a pure reducing acid(such as sulphuric acid, hydrochloric acid corrosion.But if acid contains antioxidant(such as Fe+++, Cu++) is greatly reduce corrosion. |
| Tantalum | Having strong resistance to corrosive mediums that is similar with glass.Almost is applicable to all chemical mediums.Except for hydrofluoric acid,oleum and alkali. |
| Platinum-iridium | Almost be applicable in all chemical mediums except for ammonium salt. |
| Velocity -Flow Range Table | ||||||||
| Size | Flow Range& Velocity Table | |||||||
| (mm) | 0.1m/s | 0.2m/s | 0.5m/s | 1m/s | 4m/s | 10m/s | 12m/s | 15m/s |
| 25 | 0.177 | 0.353 | 0.883 | 1.766 | 7.065 | 17.663 | 21.2 | 26.494 |
| 32 | 0.289 | 0.579 | 1.447 | 2.894 | 11.575 | 28.938 | 34.73 | 43.407 |
| 40 | 0.452 | 0.904 | 2.261 | 4.522 | 18.086 | 45.216 | 54.26 | 67.824 |
| 50 | 0.707 | 1.413 | 3.533 | 7.065 | 28.26 | 70.65 | 84.78 | 105.98 |
| 65 | 1.19 | 2.39 | 5.97 | 11.94 | 47.76 | 119.4 | 143.3 | 179.1 |
| 80 | 1.81 | 3.62 | 9.04 | 18.09 | 72.35 | 180.86 | 217 | 271.3 |
| 100 | 2.83 | 5.65 | 14.13 | 28.26 | 113.04 | 282.6 | 339.1 | 423.9 |
| 125 | 4.42 | 8.83 | 22.08 | 44.16 | 176.63 | 441.56 | 529.9 | 662.34 |
| 150 | 6.36 | 12.72 | 31.79 | 63.59 | 254.34 | 635.85 | 763 | 953.78 |
| 200 | 11.3 | 22.61 | 56.52 | 113.04 | 452.16 | 1130.4 | 1356 | 1696 |
| Suggest Velocity: 0.5m/s – 15m/s | ||||||||
Features
- Medium temperature can be -20℃~200℃.
- Integrated vertification,diagnostic function and empty pipe detection.
- Measure forward and reverse direction flows.
- Built-in reference electrodes,no need to connect ground ring.
- Dual frequency excitation and stable zero point.
- Precision coil winding technology,makes magnetic field more uniform.
- High protection grade,IP65.
- No moving parts,no pressure loss.
- High accuracy: ±0.5% of reading,±0.3% and ±0.2% optional,velocity >0.3 m/s.
Selections
| selection | ||||||||||
| WESDUN | XXX | X | X | X | X | X | X | X | X | |
| Caliber | DN25-DN200 3-digital code seeing caliber code table 13 | 1 | ||||||||
| Nominal Pressure | 1.6Mpa | 1 | ||||||||
| Connection mode | Clamp connection | 1 | ||||||||
| Liner material | PTFE | 1 | ||||||||
| FEP | 2 | |||||||||
| PFA | 3 | |||||||||
| Electrode material | 316L | 1 | ||||||||
| Hastelloy B | 2 | |||||||||
| Hastelloy C | 3 | |||||||||
| Titanium | 4 | |||||||||
| Platinum-iridium | 5 | |||||||||
| Tantalum | 6 | |||||||||
| Stainless steel covered with tungsten carbide | 7 | |||||||||
| Structure type | Integral type | 1 | ||||||||
| Remote type | 2 | |||||||||
| Remote type immerse | 3 | |||||||||
| Integral type Ex-proof | 4 | |||||||||
| Remote type Ex-proof | 5 | |||||||||
| Power | 220VAC | E | ||||||||
| 24VDC | G | |||||||||
| Output communication | Flow volume 4-20mADC/pulse | A | ||||||||
| Flow volume 4-20mADC/RS232 communication | B | |||||||||
| Flow volume 4-20mADC/RS485 communication | C | |||||||||
| Flow volume HART output/with communication | D | |||||||||
| Converter figure | Square | A | ||||||||
| Circular | B | |||||||||
| Optional Selection | |
| X | |
| 1 | Grounding electrode |
| 2 | Coupled flange |
| 3 | Entrance protection flange |
| 4 | Scraper type electrode |
| 5 | Other |
| Table 13 | |
| Caliber Code Table | |
| Caliber | Code |
| 25 | 250 |
| 32 | 320 |
| 40 | 400 |
| 50 | 500 |
| 65 | 650 |
| 80 | 800 |
| 100 | 101 |
| 125 | 125 |
| 150 | 151 |
| 200 | 201 |
Installation Notice
