Basic Info.
Main Application
Water, Wastewater, Corrosive Liquid/Gas, Serous Fluid
Application
Flow Measurement
Type
Electromagnetic Flow Meter
Measuring Principle
Faraday′s Law
Certification
GB, CE, RoHS, ISO
Liner Material
PTFE/PFA/F46/Neoprene/Polyurethane
Electrode Material
SUS316L/Hastelloy/Ta/Ti/Platinum
Meter Reading Type
RS485/Integrated with RTU/Separated
Power Supply
AC220V/3.6V Lithium Batteries/Solar
Delivery Time
15-20 Working Days
Trademark
JIANGSU DEGAO IOT TECHNOLOGY CO., LTD.
Transport Package
Carton/Wooden Package
Specification
stainless steel/carbon steel
Product Description
Liquid Magnetic Flow Meter for Coal Water Slurry
ApplicationThe DG-EFM006 series electromagnetic flowmeter is designed specifically for the flow measurement of large - wear fluid, such as coal slurry. The structural features of the sensor and the special performance of the converter fully meet the requirements of the flow measurement of the coal slurry.Difficulties in the composition and measurement of coal water slurry:1.The coal slurry contains a large amount of solid particles and friction electrode, resulting in "spike pulse interference", which causes great fluctuations in the measurement of the flowmeter..2.Flow fluctuation caused by the pulsation of the pressure pump (such as the screw pump, diaphragm pump and piston pump);3.The metal particles in the coal slurry are magnetized and adsorbed on the electrodes or in the vicinity of the electrodes, causing fluctuations in the display and output of the flow meter;4.The serious wear of the coal slurry to the lining and electrode of the electromagnetic flowmeter is also a difficult point for the designers. | Factors that cause fluctuations in the flow of coal-water slurry | Applicability | Solution | Other solutions |
| When the solid particles of the coal slurry are rubbed through the surface of the electrode, the contact electrochemical potential of the electrode surface suddenly changes, resulting in the "spike pulse interference" of the electrode detected by the sensor output. | √ | The sensors with special materials and structure and special transducers. |
/ |
| The pulsation caused by the pulsating flow of the 'screw pump' at different speeds | × | The true fluctuation of flow, the flow meter can't solve.
. | Lengthening the front straight section of the flowmeter is the best way to solve the pulsation caused by the work of the coal slurry pressurization pump |
| Pulsating flow (6%~15%) caused by a 'piston pump' or 'diaphragm pump' | × |
| The magnetized metal particles are adsorbed on or near the measuring electrode, forming a polarization voltage on the electrode, reducing the measurement accuracy of the electromagnetic flowmeter and further increasing the amount of fluctuation | √ | After discharge pressure, take out the electrode (removable electrode), clean it and install it again. | Reducing the metal particles in the coal slurry
|
√ It is very convenient to replace the electrode of the flow meter without cutting the flowmeter shell.
√ Anti-scour lining protection ring designed with flow meter inlet
√ Wear-resistant tungsten carbide electrode
√ Ceramic lining, especially wear-resistant √ Anti-"Spray spike interference" algorithm and using 75Hz high frequency switching excitation method,The flow measurement is stable and the fluctuation is very small √ The signal -to -noise of the output signal of the sensor electrode is more than 3 times higher than that of the conventional flowmeter √ Excellent low velocity performance
√Both the power supply and the output circuit adopt reliable lightning protection and surge protection, with high reliability and low fault.
√ Reliable detection technology of empty pipePerformance parametersPrecision of electromagnetic flowmeter: | Flow rate range | electromagnetic flowmeter |
| 1.0m/s to 5m/s | 0.25% of rate |
| 0.3m/s to 1.0m/s | 0.5% of rate |
| <0.3m/s | ±0.015m/s |
Response time: the maximum 0.3 milliseconds relative to the input change.
Stability: the stability over 6 months is ±0.1% of measured value
Impact of ambient temperature: ±0.25% over operating temperature range
Impact of the installation location: the installation is not affected as long as the sensor can be fully charged and enough straight sections are ensured before and afterSensor parameters | Nominal diameter | 1 inch to 20 inch ( DN15 to DN500 ) |
| Temperature range of the measured fluid | -29 to 80ºC |
| Body material | SUS304 stainless steel |
| Flange material and shell | carbon steel, SUS304 stainless steel (optional) |
| Shell coating | anti-corrosion polyester paint
|
| Lining material | ceramic lining
|
| Electrode material | Tungsten carbide electrode (detachable)
|
| Process connection | PN1.6mPa to PN25mPa |
| Lining protection ring | 316 manganese chromium allo
|
| Sensor protection level | IP65,IP68 |
| Ambient temperature range | - 20 to 149 of (- 29 to 65 ºC) |
| Shell material | low copper die-casting aluminum Nema 4X ,IEC60529 IP66 (standard), or stainless steel material converter shell |
| Power | AC 86 to 265V, 50/60HZ, 1A fast fuse insurance; DC 16V to 36V, 1A fast fuse insurance |
| Output | 4-20 mA output, pulse or frequency output |
| Communication protocol | RS485 communication, Hart protocol can be selected |
| Protection level | IP65/IP68 |
| Correction | 10-segment nonlinear correction |
| LCD display | showing instantaneous flow, total volume, flow rate, etc.
|
| Excitation method | Special high voltage frequency excitation mode |
Address:
1/F, No. 3rd Building, Chongchuan District, Maipu Science Park, 158th Xin Sheng Road, Nantong, Jiangsu, China
Business Type:
Manufacturer/Factory
Business Range:
Instruments & Meters, Manufacturing & Processing Machinery
Management System Certification:
ISO 9001, ISO 14001, OHSAS/ OHSMS 18001
Company Introduction:
Degao Instruments, ever since founded in 2005, has always valued technology and insisted to provide high quality and patented electromagnetic water meters, water quality analysis instrument/sensor, smart water solutions and excellent service (both before and after sale) to the customers. With a group of experienced experts who dedicated in research & development of high-tech products with insistence and consistence, Now we are the integrative supplier which launched the first intelligent water supply products and application solution based on the Internet of Things technology in China.
The faith to always search for ways to provide better, smarter and more advanced products to the customer, drives we to explore and develop all our products with the cutting-edge technology. We work with energy and water supply companies&utilities to provide professional suggestions and solutions to optimize their energy& resource saving and improve the overall efficiency.
All those products are widely used in the field of residential, municipal, industrial sub-metering, Heating, fire fighting, water treatment and energy resource management related areas.
