86-371-22950881
38 Bianjing Road, Kaifeng, Henan, China (Mainland)
E-mag series electromagnetic flowmeter is used for measuring the volumetric flowrate of conductive liquid and serous fluid in the closed pipe, and is applicable to chemicals, power, mining and metallurgy, petroleum, water supply and drain, paper making, medicine, foods and so on.
a) The measurement is not affected by the change in density, viscosity, temperature, pressure and conductivity of the fluid;
b) There is no part which may obstruct the flow in the measuring tube. No pressure loss, low requirement for the straight pipe;
c) Inside nominal diameter is DN3-DN3000. Multiple choices are available for the lining of sensor and electrode material;
d) The converter adopts new excitation mode, low power consumption, stable zero point, high accuracy. Measurement range reaches 1500: 1;
e) The converter could be integrated or separated from the sensor;
f) The flowmeter has bidirectional measuring system and is installed with three integrators: forward total volume, reverse total volume and total difference; it can display forward flow and reverse flow volume in varied outputs: current, pulse, digital communication, HART;
g) The converter has self-inspection and self-diagnosis function;
h) Explosion-proof type can be used in explosion-proof sites.
Main Technical Parameters
Name | Electromagnetic Flow Meter | |||||
Standard | JB/T9248-1999 | |||||
Inside Nominal Diameter | DN3~DN3000 | |||||
Highest Flow Velocity | 15m/s | |||||
Precision | DN15~ DN600 | ±0.3% of the indicating value (flow velocity ≥1m/s); ±3mm/s (flow velocity <1m/s) | ||||
DN3~DN10 DN700~DN3000 | ±0.5% of the indicating value (flow velocity ≥0.8m/s); ±4mm/s (flow velocity <0.8m/s) | |||||
Liquid Conductivity | ≥5us/cm | |||||
Nominal Pressure | 4.0MPa | 1.6MPa | 1.0MPa | 0.6MPa | 6.3MPa | 10 MPa |
| DN3- DN700 | DN15- DN1600 | DN15- DN2200 | DN700- DN3000 | DN15- DN500 | For special orders | |
| Lining Material | PTFE, Neoprene ,PFA,F46,PU | |||||
Electrode Material | Stainless Steel 316L, Hastelloy C, Hastelloy B, Titanium, Tantalum, Platinum-iridium Alloy, Stainless Steel Coated with Tungsten Carbide | |||||
Housing Protection | DN15- DN3000, Separated Type Sensor with Rubber or Polyurethane Lining | IP65 or IP68 | ||||
Other Sensor; Integrated Flowmeter and Separated Flowmeter | IP65 | |||||
Explosion Proof Levels | Normal,Flameproof(EIICT4-CT6)Intrinsically Safety(ExiaII CT4) | |||||
Power Supply | AC | 85~265V,45~400Hz | ||||
DC | 19- 40V | |||||
Lithium Battery Powered | ||||||
Operation Buttons | Push Button Type;Magnetic Button Type(Explosion-proof Sites) | |||||
Output Signal | Current, Pulse, Alarm | |||||
Digital Communication | RS232;RS485;HART;ProfibusDP | |||||
Cable Interface | M20×1.5 Electrical Interface | |||||
Sensor Connection | Flange | |||||
Flange Standard | GB;HG;JB;ASME;BS;DIN;JIS | |||||
Selection Of Lining
| Lining Material | Main Performance | Applicable Range |
Polytetrafl uoroethylene (F4) | 1. It is the plastic with most stable chemical properties, and is resistant to boiled hydrochloric acid, sulphuric acid, nitric acid and aqua regia, and also strong alkali and varied organic solvents. 3. Negative pressure resistance is lower than poly neoprene. | 1.Strong corrosive medium such as concentrated acid and alkali. 2.Sanitary medium. |
| Fluorinated Ethylene Propylene (F46) | Chemical performance is similar as F4, the negative pressure resistance is better than F4, the price is relatively high. | |
| Additional Mesh PFA | Chemical performance is similar as F4, good negative pressure resistance, the price is high. | Water, sewage, weak wearable mud ore pulp. |
| Poly Neoprene | 1. With very good elasticity, high breaking tenacity, good wear resistant performance. 2. Resistant to common low concentration acid and alkali and salt, not resistant to oxidizing medium. | |
| Polyurethane Rubber | 1. Extremely strong wear resistant performance. 2. The corrosion resistant performance is relatively low. | Neutral and strong wearable ore pulp, coal pulp and mud. |
Selection of electrode
| Material Of Electrode | Corrosion and wear resistant performanceCorrosion and wear resistant performance |
| Stainless Steel 316L | It is used for weak corrosive medium such as industrial water, domestic water and sewage, applicable to petroleum, chemicals, iron and steel industries and municipal and environmental protection fields. |
| Hastelloy B | Resistant to non-chlorinated acid such as sulphuric acid, phosphoric acid, hydrofluoric acid, organic acid and alkali, non oxidizing salt solution. |
| Hastelloy C | Resistant to non-oxidizing acid and mixing medium such as nitric acid, mixing acid, or chromic acid and sulphuric acid, resistant to oxidizing salt such as Fe+++, Cu++ or other oxidizers such as hypochlorite solution and sea water higher than the normal temperature. |
| Titanium | Resistant to sea water, varied chloride and hypochlorite, oxidizing acid (includes fuming sulphuric acid), organic acid and alkali. Not resistant to relatively pure reducing acid (such as sulphuric acid, hydrochloric acid), but if the acid contains oxidizer (such as nitric acid, Fe+++, Cu++), the corrosion drops greatly. |
| Tantalum | With excellent corrosion resistance, similar as glass. Except hydrofluoric acid, fuming sulphuric acid and alkali, it is nearly resistant to all chemical medium (includes hydrochloric acid at boiling point, nitric acid and <150℃ sulphuric acid). It is not resistant to alkali. |
| Platinum-iridium Alloy | It is nearly resistant to all chemical medium, but it is not applicable to aqua regia and ammonium salt. |
| Stainless Steel Is Coated With Tungsten Carbide |
It is used for without corrosivity and strong wearable medium. |
about Us
Kaifeng Instrument Co., Ltd is located in the ancient city of Kaifeng, Henan province, China. Our factory is built up with currently the most complete and excellent calibration devices for flow instruments in China, which could carry out the real flow calibration for water, gas, oil and other mediums in large, medium and small calibers. We have developed numerous product series and models covering the most complete medium types and widest flow ranges.We are one of the production and testing bases for flow meters in China.
Established in 1958, our company was formerly known as Kaifeng Instrument Factory -- anational level state-owned enterprise. Our company was certified to ISO9001 Quality System early in1997. And now, our factory occupies an area of 180,000 square meters with more than 600 working employees,180 of them are engineers and technicians. Over the past 60 years, we have supplied advanced and reliable flow measuring instruments and devices for China’s national key projects in petroleum, chemical, metallurgy, power supply, light industries,water treatment, municipal construction, shipbuilding, aerospace and other industries. Also, our products have been exported to more than 20 countries and regions all over the world.
Q: What about the quality assurance service?
A: Our guarantee period is 12 months, the product quality problem that appears in the quality assurance period, we give free maintenance or change.
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock.
or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Could I visit your factory?
A: Of course,if you need we will help you to visit our factory.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance,balance before shippment.
packing details:
Wooden case or according to consumer requirements ;Plastic foam protect the machine in the box.
If you have another question, pls feel free to contact us as below:
