VREM Electromagnetic Flowmeter
Features:
1. Linear measurement principle enables high-precision measurement without being affected by changes of density, viscosity, temperature, pressure, and conductivity in a fluid
2. There is no obstruction and moving any part in the measuring tube, and the pressure loss is small, so it will not cause additional energy loss, nor will it cause clogging, and the energy saving effect is remarkable. It is especially suitable for liquid-solid two-phase flow medium, such as sewage, mud, pulp, pulp, etc. measuring.
3. Low installation requirements, only 5D for the front straight pipe section and 2D for the rear straight pipe section (D is the inner diameter of the measuring tube to the selected instrument)
4. Wide coverage of nominal diameter fromDN3 to DN3000, lining and electrodes are multiple optional to meet a variety of conductive flow requirements
5. Output communication protocols are also optional, MODBUS, HART, PROFIBUS, or GPRS, etc
6. The converter adopts 32-bit embedded microprocessor, full digital processing, fast calculation speed, strong anti-interference ability, reliable measurement, high precision and turndown ratio up to 1500:1
7. With high-definition backlight LCD display, multilingual menu, the instrument is easy to be used and operated. The operation is easy to learned and understood.
8. The flowmeter has the function of self-test and self-diagnosis.It can measure the conductivity of a fluid, also can check itself if the measuring tube is empty.
9. The internal calculator displays positive cumulative flow, reverse cumulative flow, and instantaneous flow, respectively
10. Plug-in electromagnetic flowmeter is easy to be installed. Mounting can be done even when measuring tube is full of a flowing fluid with pressure. It has absolute installation advantages
Typical application:
An electromagnetic flow meter can be used to measure the volumetric flow of a conductive fluid in a closed conduit.
It has been widely used for flow measurement and control in various industrial and agricultural production processes such as in petroleum, chemical, steel, metallurgy, water supply and drainage, water irrigation, water treatment, environmental sewage control, paper making, medicine, food, etc.
Working conditions:
The conductivity of medium should be higher than 5 μs/cm.
Working pressure: 0.6 - 10.0 MPa
Medium temperature: no higher than 180 degree Celsius
Ambient conditions:
Ambient temperature: - 25℃ - +60℃（for sensor）
- 10℃ - +60℃ （for transmitter）
Humidity: 5% - 95%
Enclosure protection grade: IP65, IP67, TP68, optional on request
Explosion proof: Ex ia IICT5
Electrode material and its applicable fields
| No. | Electrode Material | Application fields |
| 1 | 316L | For flow measurement of water, sewage or slightly corrosive inorganic and organic acids. |
| 2 | Hastelloy B （HB） | It has good corrosion resistance to hydrochloric acids of all concentrations below the boiling point. It is resistant to corrosion by non-oxidizing acids, such as dilute sulfuric acid, phosphoric acid, hydrofluoric acid, and organic acids, etc. And it is also resistant to corrosion from non-oxidizing alkalis, and salt liquids. |
| 3 | Hastelloy C （HC） | Resistant to oxidizing acids such as nitric acids,concentrated sulfuric acid, mixed acids,including mixed liquids of chromic acid and sulfuric acid. Also resistant to corrosion from oxidizing salt liquids,those salt liquids containing Fe+++ or Cu++ and other oxidants, such as hypochlorite solutions above normal temperature,or,seawater. |
| 4 | Titanium（Ti） | It is resistant to seawater, various chlorides and hypochlorites, oxidizing acids (including fuming nitric acid), organic acids, alkalis, etc.It is not resistant to corrosion by purer reducing acids (such as dilute sulfuric acid and hydrochloric acid).But, when an oxidizing agent (such as nitric acid, Fe+++, Cu++) is contained in a acid liquid, the corrosion resistance is greatly lowered. |
| 5 | Tantalum（Ta） | It has excellent corrosion resistance and is very similar to glass. Except for hydrofluoric acid, fuming sulfuric acid, fuming nitric acid, alkali, it s almost resistant to corrosion by all chemical media including boiling point hydrochloric acid, nitric acid, and sulfuric acid. But, it is not resistant to corrosion in alkalis. |
| 6 | Platinum Iridium Alloy | It is suitable for almost all chemicals, but not for aqua regia and ammonium salts. |
| 7 | Tungsten carbide | It has good wear resistance, can be used for the measurement of high-abrasion medium, such as paper pulp, ore slurry and so on. |
Lining material, features and scope of application
| No. | Lining material | Main Properties | Scope of Application |
| 1 | Chloronorgutta (CR) | 1. It is oil resistant, solvent resistant, oxidation resistant, resistant to general acids, alkalis, salts and other media corrosion. 2. It has excellent elasticity and wear resistance, but poor cold resistance. | 1. It is suitable for flow measurement of non-strong acids, strong alkalis, strong oxidizing medium at the temperature range of 0℃ to 80℃。 2. It is suitable for measuring flow of sewage and mud. |
| 2 | Fluorinated Silicone Rubber（FVMQ） | 1.It has good low temperature resistance, can still work normally even at -55℃ 2. It has excellent heat resistance, it can work for long term at 180℃ | 1.It is suitable for non-wearing, non-corrosive medium flow measurement at the temperature from -25℃ to 150℃ 2. It is suitable for high temperature fluids flow measurement. |
| 3 | polyester rubber（PU） | 1.It has excellent wear resistance and elasticity. 2. It has poor resistance to acids and alkalis. | It is suitable for neutral strong wearing ore pulps, coal slurry and earth slurry at the temperature range of -25℃ - +60℃ |
| 4 | PFA | 1. It has hydrophobic and non-tacky nature, strong high temperature resistance. 2. It has excellent corrosion resistance. It has strong resistance to strong acids, strong alkalis, organic solvents and various salt solutions. 3. A measuring tube lined with teflon has good resistance to negative pressure. Adding metal mesh into the lining will enhance the resistance of the flowmeter to negative pressure. 4. The wear resistance is poor. | 1. It is suitable for non-abrasion liquids at temperature range of -25℃ - +140℃. 2.It is also suitable for those liquids flow measurement at hygienic conditions. |
| 5 | FEP （F46） | 1. It is hydrophobic and non-sticky. 2. Its corrosion resistance is second only to PFA. 3. Metal mesh can be added into the lining material to enhance the negative pressure resistance. 4. It has poor wear resistance. | 1. It is suitable for non-abrasion liquids at temperature range of -25℃ - +100℃. 2. It is also suitable for those liquids flow measurement at hygienic conditions. |
| 6 | PTFE | 1. It is the most stable chemical material among all plastics, being resistant to boiling hydrochloric acid, sulfuric acid, nitric acid and aqua regia, also resistant to concentrated alkali and various organic solvents.But, it is not resistant to chlorine trifluoride, high temperature oxide fluoride, high flow rate liquefied fluorine, liquefied oxygen, ozone corrosion. 2. It has poor wear resistance. | 1. It is suitable for liquids within the temperature range of -25℃ - +140℃. 2. It is suitable for strong corrosive liquids, such as concentrated acid, concentrated alkali, etc. 3. It is also suitable for those liquids flow measurement at hygienic conditions. |
| 7 | Ceramic (AL2O3) | 1. It has high wear resistance, high negative pressure resistance. 2. It has long-term excellent stability and high accuracy. 3. It has excellent corrosion resistance. It can even withstand mixed acids,for example,aqua regia. 4. It has excellent heat resistance and thermal shock resistance | 1. It is suitable for flow measurement in chemical industry. 2. It is suitable for flow measurement in mine industry. 3. It is suitable for flow measurement in food industry. |
Inner Diameter-Flow-Flow-rate Comparison Table
A: Flow rate,m/s B: Flow,m3/h C: Inner diameter,mm
| 0.3 | 0.4 | 0.5 | 1.0 | 2.0 | 3.0 | 4.0 | 5.0 | 6.0 | 7.0 | 8.0 | 9.0 | 10.0 |
10 | 0.09 | 0.11 | 0.14 | 0.28 | 0.57 | 0.85 | 1.1 | 1.4 | 1.7 | 2 | 2.3 | 2.5 | 2.8 |
15 | 0.2 | 0.3 | 0.4 | 0.6 | 1.3 | 1.9 | 2.5 | 3.2 | 3.8 | 4.5 | 5.1 | 5.7 | 6.3 |
20 | 0.4 | 0.5 | 0.6 | 1.1 | 2.3 | 3.4 | 4.5 | 5.7 | 6.8 | 7.9 | 9 | 10 | 11 |
25 | 0.6 | 0.7 | 0.9 | 1.8 | 3.5 | 5.3 | 7.1 | 8.8 | 11 | 12 | 14 | 16 | 17 |
32 | 0.9 | 1.2 | 1.4 | 2.9 | 5.8 | 8.7 | 12 | 14 | 17 | 20 | 23 | 26 | 28 |
40 | 1.4 | 1.8 | 2.3 | 4.5 | 9 | 14 | 18 | 23 | 27 | 32 | 36 | 41 | 45 |
50 | 2.2 | 2.8 | 3.5 | 7.1 | 14 | 21 | 28 | 35 | 42 | 49 | 57 | 64 | 70 |
65 | 3.6 | 4.8 | 6 | 12 | 24 | 36 | 48 | 60 | 72 | 84 | 96 | 100 | 110 |
80 | 5.4 | 7.2 | 9 | 18 | 36 | 54 | 72 | 90 | 100 | 120 | 140 | 160 | 180 |
100 | 8.4 | 11 | 14 | 28 | 57 | 85 | 110 | 140 | 170 | 190 | 220 | 250 | 280 |
125 | 14 | 17 | 22 | 44 | 80 | 130 | 170 | 220 | 260 | 300 | 350 | 390 | 440 |
150 | 20 | 25 | 32 | 64 | 120 | 190 | 250 | 310 | 380 | 440 | 500 | 570 | 630 |
200 | 34 | 45 | 57 | 110 | 220 | 340 | 450 | 560 | 670 | 790 | 900 | 1000 | 1100 |
250 | 54 | 71 | 88 | 180 | 350 | 530 | 700 | 880 | 1000 | 1200 | 1400 | 1500 | 1700 |
300 | 77 | 100 | 120 | 250 | 500 | 760 | 1000 | 1200 | 1500 | 1700 | 2000 | 2200 | 2500 |
350 | 110 | 140 | 280 | 350 | 690 | 1000 | 1300 | 1700 | 2000 | 2400 | 2700 | 3100 | 3400 |
400 | 140 | 180 | 230 | 450 | 900 | 1300 | 1800 | 2200 | 2700 | 3100 | 3600 | 4000 | 4500 |
450 | 180 | 230 | 290 | 570 | 1100 | 1700 | 2300 | 2800 | 3400 | 4000 | 4500 | 5100 | 5700 |
500 | 220 | 280 | 360 | 710 | 1400 | 2100 | 2800 | 3500 | 4200 | 4900 | 5600 | 6300 | 7000 |
600 | 310 | 410 | 510 | 1000 | 2000 | 3000 | 4000 | 5100 | 6100 | 7100 | 8100 | 9100 | 10000 |
700 | 420 | 550 | 700 | 1400 | 2700 | 4100 | 5500 | 7000 | 8300 | 9600 | 11000 | 12000 | 13000 |
800 | 550 | 720 | 910 | 1800 | 3100 | 5400 | 7200 | 9000 | 10000 | 12000 | 14000 | 16000 | 18000 |
900 | 690 | 920 | 1200 | 2300 | 4500 | 6800 | 9100 | 11000 | 13000 | 16000 | 18000 | 20000 | 22000 |
1000 | 850 | 1100 | 1500 | 2800 | 5600 | 8500 | 11000 | 14000 | 16000 | 19000 | 22000 | 25000 | 28000 |
1200 | 1300 | 1600 | 2100 | 4100 | 8100 | 12000 | 16000 | 20000 | 24000 | 28000 | 32000 | 30000 | 40000 |
1400 | 1700 | 2200 | 2800 | 5500 | 11000 | 16000 | 22000 | 27000 | 33000 | 38000 | 44000 | 50000 | 55000 |
1600 | 2200 | 2900 | 3700 | 7200 | 14000 | 21000 | 29000 | 36000 | 43000 | 50000 | 57000 | 65000 | 72000 |
1800 | 2800 | 3700 | 4600 | 9200 | 18000 | 27000 | 36000 | 45000 | 54000 | 64000 | 73000 | 82000 | 91000 |
2000 | 3400 | 4500 | 5700 | 11000 | 22000 | 34000 | 45000 | 56000 | 67000 | 79000 | 90000 | 100000 | 110000 |
2200 | 4200 | 5500 | 6900 | 14000 | 27000 | 41000 | 56000 | 68000 | 82000 | 95000 | 110000 | 120000 | 130000 |
2400 | 4900 | 6500 | 8200 | 16000 | 32000 | 48000 | 68000 | 81000 | 97000 | 110000 | 130000 | 140000 | 160000 |
2600 | 5800 | 7600 | 9600 | 19000 | 38000 | 57000 | 76000 | 95000 | 110000 | 130000 | 150000 | 170000 | 190000 |
2800 | 6700 | 8900 | 12000 | 22000 | 44000 | 66000 | 88000 | 110000 | 130000 | 150000 | 170000 | 190000 | 220000 |
3000 | 7700 | 10000 | 13000 | 25000 | 50000 | 76000 | 100000 | 120000 | 150000 | 170000 | 200000 | 220000 | 250000 |
