是一种根据法拉第电磁感应定律来测量管内导电介质体积流量的感应式仪表，采用单片机嵌入式技术，实现数字励 The split-type electromagnetic flowmeter of Jiangsu Jinhu Dongxiang Instrument Factory is an inductive instrument that measures the volumetric flow of the conductive medium in the tube according to the Faraday electromagnetic induction law. It uses a single-chip microcomputer embedded technology to achieve digital excitation.
Magnetic, and the use of fieldbus on the electromagnetic flowmeter, is a domestic first, the technology reaches the domestic leading level.
在满足现场显示的同时，还可以输出4～20mA电流信号供记录、调节和控制用，现已广泛地应用于化工、环保、冶金、医药、造纸、 The split electromagnetic flowmeter can also output 4-20mA current signal for recording, adjustment and control while meeting the on-site display. It has been widely used in chemical industry, environmental protection, metallurgy, medicine, papermaking,
Water supply and drainage and other industrial technology and management departments.
In addition to measuring the flow of general conductive liquids, electromagnetic flow meters can also measure the volume flow of liquid-solid two-phase flows, high-viscosity liquid flows, and salts, strong acids, and alkali liquids.
The sensor adopts an integrated welding structure, which has good sealing performance;
Simple and reliable structure, no moving parts inside, almost no pressure loss;
The recording accuracy is not affected by changes in physical parameters such as pressure, temperature, density, viscosity of the measured medium; the accuracy is not sensitive to changes in the velocity distribution (except the vortex field);
With conductivity measurement function, it can judge whether the sensor is empty or not; using 16-bit embedded microprocessor, fast operation speed and high accuracy; two totalizers inside, showing positive and negative accumulation and difference accumulation respectively;
With RS485 or RS232C digital communication signal output;
Including digital processing, strong anti-F interference ability, reliable measurement and high accuracy; sensitive instrument, the output signal is most directly proportional to the flow, and the range is wide
The ultra-low EMI switching power supply is suitable for power supply voltage changes, and has good EMC resistance. It includes Chinese and English menu operations, which is easy to use, simple to operate, and easy to learn and understand;
With two-way flow measurement function, it can display the king, reverse flow, percentage, and flow rate. The well has double I-sentence current, frequency, and pulse. Output, easy to record and save different flow policy signals;
Self-diagnostic information and troubleshooting.
Can provide explosion-proof (explosion-proof type).
The meter has a simple and reliable structure, no moving parts, and long working life.
There are no blocking parts, no pressure loss and fluid clogging.
No mechanical inertia, fast response, good stability, can be applied to automatic detection, adjustment and program control systems.
The measurement accuracy is not affected by the type of the measured medium and its physical quantity parameters such as temperature, viscosity, density, and pressure.
Different combinations of PTFE or rubber linings and electrode materials such as Hc, Hb, 316L, Ti can be adapted to the needs of different media.
Various types of flowmeters such as pipeline type and plug-in type are available.
There are two types of integration and separation.
High definition LDE backlight display.
技术参数 Technical parameters of split electromagnetic flowmeter
Instrument accuracy: pipeline 0.5, 1.0; plug-in 2.5
Measurement medium: Various liquid and liquid-solid two-phase fluids with conductivity greater than 5 μS / cm.
Velocity range: 0.2 ～ 8m / s
Working pressure: 1.6MPa
Ambient temperature: -40 ℃ ～ + 50 ℃
Medium temperature: PTFE lining ≤ 180
Housing protection: integrated type: IP65;
Separate type: Sensor IP68 (5 meters underwater, rubber lining only)
Output signal: 4 ～ 20mA.DC, load resistance 0 ～ 750Ω
Communication output: RS485 or CAN bus
Electrical connection: M20 × 1.5 internal thread, φ10 cable hole
Power supply voltage: 90 ～ 220V.AC, 24 ± 10% V.DC
Maximum power consumption: ≤10VA
Generally, the flow velocity of the measured medium of the industrial electromagnetic flowmeter is 2 ～ 4m / s. In special cases, the minimum flow velocity should be no less than 0.2m / s and the highest should be no more than 8m / s. If the medium contains solid particles, the usual flow rate should be less than
3m / s, to prevent excessive friction between the lining and the electrode. For viscous fluids, the flow rate can be selected to be greater than 2m / s. A larger flow rate helps to automatically eliminate the role of stickies attached to the electrode, which is conducive to improving measurement accuracy.
Under the condition that the range Q has been determined, the size of the flowmeter diameter D can be determined according to the above range of the flow velocity V, and the value is calculated by the following formula:
Q = πD2V / 4
Q: Flow rate (㎡ / h)? D: Pipe inner diameter ?? V: Flow rate (m / h)
The range Q of the electromagnetic flowmeter should be greater than the expected maximum flow value, and the normal flow value should be slightly larger than 50% of the full scale of the flowmeter.