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| Categories | Electromagnetic Flowmeter |
|---|---|
| Brand Name: | QINWEIYB |
| Model Number: | QWDC-SUP117 |
| Certification: | Explosion-proof certificate |
| Place of Origin: | China |
| MOQ: | 1Set |
| Price: | Negotiable |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union |
| Supply Ability: | 100PCS/Month |
| Delivery Time: | 5-8 work days |
| Packaging Details: | Carton |
| Name: | Electromagnetic Flowmeter |
| Frequency Output: | 1-5000Hz |
| Protection: | IP65 ; IP 68(Remote Type) |
| Electrodematerial: | 316L Stainless Steel, Hastelloy, Titanium |
| Operating Pressure: | Up to 4 MPa |
| Type: | Magnetic Flow Meter |
| Electrode Material: | SUS316L/HB/HC/Titanium/Tantalu |
| Pressure Type: | Differential Pressure |
| Output Signal: | 4-20mA, Pulse, Modbus, HART |
| Relative Humidity: | 5%~95% |
| Company Info. |
| Xi 'an Qinwei Instrument Factory (General Partnership Enterprise) |
| Verified Supplier |
| View Contact Details |
| Product List |
Applicable Liquid Metal Signal-Stabilized DC Electromagnetic Flowmeter
DC electromagnetic flowmeter refers to an electromagnetic flowmeter that excites the excitation coil with a constant DC current or a unidirectional pulse current.
| Characteristics | (Pure) DC excitation flowmeter | Modern low-frequency rectangular wave excitation flowmeter |
|---|---|---|
| Excitation waveform | Constant DC or unidirectional long pulse. | Alternating positive and negative rectangular waves (typical frequencies such as 6.25Hz, 12.5Hz). |
| Applicable medium | Non-electrolyte: mainly liquid metals. | Electrolyte: water, acid, alkali, slurry, and all conventional conductive fluids. |
| Polarization effect | No effect on liquid metals. | Effective elimination of polarization voltage influence through rapid magnetic field reversal. |
| Zero stability | Poor, complex compensation required. | Excellent, modern intelligent transmitters can achieve automatic zero tracking and correction. |
| Resistance to power frequency interference | Immune by nature. | Effective suppression through techniques such as synchronous sampling. |
| Main application fields | Nuclear industry, advanced metallurgy. | All common industrial processes (water treatment, chemical, food, etc.). |
DC electromagnetic flowmeters represent the origin of electromagnetic flowmeter technology and a special technical path. For conventional industrial measurements, they have long been replaced by more advanced technologies suchs as low-frequency rectangular wave excitation due to their inability to overcome the fundamental obstacle of "polarization effect".
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