Xi'an Dehou Electronic Technology Co., Ltd.
Xi'an Dehou Electronic Technology Co., Ltd.
Add to Cart
NYLD 4-20mA Intelligent Electromagnetic Flow Meter 0.1-10m/S High Precision
NYLD Intelligent Eletromagnetic Flowmeter
The NYLD intelligent type electromagnetic flowmeter consists of a sensor and a converter. It is based on Faraday's law of electromagnetic induction, which is used to measure the volume flow of conductive liquid with conductivity greater than 5μs/cm. It is an inductive meter for measuring the volume flow of conductive medium. In addition to measuring the volume flow of general conductive liquid, it can also be used to measure the volume flow of strong corrosive liquids such as strong acid and alkali and uniform liquid-solid two-phase suspension liquid such as slurry, pulp and paper pulp. It is wdely used for flow measurement of petroleum, chemical, metallurgy, textile, papermaking, environmental protection, food and other industrial sectors and municipal management, water conservancy construction, rivers and other fields.
NYLD Intelligent Eletromagnetic Flowmeter Technical Parameters
|
Standard Nominal diameter (mm) (Special specifications can be customized) |
JB/T 9248-2015 pipe type PTFE lining: DN10~DN600; pipe type rubber lining ink: DN40~DN2200 Plug-in type: DN150~DN3000 |
| Flow direction | Positive and negative |
| Range ratio | 20:1 |
| Repeatability error | ±0.1% of the measured value |
| Accuracy grade |
pipe type: 0.5 grade, 1.0 grade; Plug-in: 1.5 grade, 2.0 grade |
| Measured medium temperature |
Normal rubber lining: -20~+60°C High temperature rubber lining: -20~+90°C PTFE lining: -30~+100°C High temperature tetrafluoro lining: -20~+180°C |
|
Rated operating pressure (high pressure can be customized)
|
DN10－DN150: ≤1.6MPa DN200－DN350: ≤1.0MPa DN400－DN1000: ≤0.6MPa DN450－DN2200: ≤0.25MPa |
| Flow rate range | 0.1－10m/s |
| Conductivity range | The conductivity ofthe measured fluid is ≥5μs/cm |
| Signal output | 4-20mA (load resistance 0~750Ώ), pulse/frequency, control level |
| Communication output |
Rs485 communication MODBUS protocol, HART communication interface |
| Power supply | 220VAC or 24VDC |
|
Required straight pipe length |
Upstream ≥5DN downstream ≥2DN |
| Connection mode | The flowmeter and the pipe use flange connection, and the flange meets the national standard: GB/T9115.1-200 |
| Explosion-proof grade | ExdllСT6 |
| Protection grade | Ip65, it can be customized up to IP68 |
| Ambient Temperature | －25～＋60℃ |
| Ambient humidity | 5%～95% |
| Total power consumption | Less than 20W |
NYLD Intelligent Eletromagnetic Flowmeter Operating Principle
According to the principle of Faradayelectromagnetic induction, a pair of detecting electrodes are mountedon the wall of the pipe perpendicular to the axis of the measuring pipe and the magnetic line of force.Whenthe conductive liquid moves along the axis of the measuring pipe, theconductive liquid cuts the magnetic line of force to generate an induced potential.The induced potential is detected by the two detection electrodes and the value is proportional to the flow rate.Thevalue is:
E=KBVD Where: E- induced potential;
K-thefactor related to the magnetic field distribution and the axial length;
B-magnetic induction intensity;
V-conductive liquid average flow rate;
D-electrode spacing; (measure inner diameter of the pipe)
The sensor transmits the induced potential Eas a flow signal to the converter.After a series of digital processing such as amplification and conversion filtering, the instantaneous flow rate and the accumulated flow rate are displayed by the dot matrix liquid crystal with backlight.The converter has4-20mA output, alarm output and frequency output, and has RS-485 communication interface, and supports HARTand MODBUS
protocols.
NYLD Intelligent Eletromagnetic Flowmeter Design Features
■ Full digital processing, strong anti-interference ability, reliable measurement, high precision, flow measurement range can reach 150:1;
■ Ultra-low EMIswitching power supply, large voltage range of suitable power supply, goodanti-EMI performance;
■Use 16-bitembedded microprocessor, with fast operation speed, high precision, and programmable low-frequency rectangular wave excitation,improving the stability of flow measurement and low power consumption;
■ Use SMD parts and surface mount (SMT) technology, high circuit reliability;
■ No moving parts in the pipe, no flow blocking parts, and there is almost no additional pressure loss in the measurement;
■ Itcan modify the range online on site according to the actual needs of users;
■The measurement results are independent of the physical parameters such as flow velocity distribution, fluid pressure, temperature, density, viscosity;
■ High-definition backlit LCDdisplay, fullChinese menuoperation, easy to use, easy to operate, easy to learn and understand;
■ Withdigital communication signal output such as RS485, RS232, Hartand Modbus (optional);
■ With self-test and self-diagnosis function;
■ With hourly total recording function, recording the total amount of flow in hours, suitable for time-sharing measurement (optional);
■Thereare three Integrators, which can display the forward accumulation amount ,the reverse accumulation amount and the difference calculation amount respectively..There is an internal power-down clock, which can record 16 power-down times. (optional);
■ With infrared handheld operator, 115KHZcommunication rate, it can operate all functions of converter remotely without contact (optional).