WA500- Electromagnetic flowmeter for flow measurement

WA500- Electromagnetic flowmeter for flow measurement

Without any moving parts, rotating gears or turbines or bearings, relying on two electrodes to measure the density of induced magnetic fields generated by conductive fluids (such as water) flowing through pipelines, it is not easily affected by bearing wear or other mechanical wear issues.

Application areas:

·Wastewater treatment

·Printing and dyeing chemical environmental protection

·Metallurgy

·Medicine

·Paper making

·Tap water supply

Advantages Overview:

·0.5% FS measurement accuracy

·RS485 mod-bus 通信

·4-20mA output can measure forward and reverse fluid flow rates

·Not affected by liquid temperature, pressure, and density

·No pressure loss

·The reading is not affected by changes in density or viscosity

WA500- Electromagnetic flowmeter for flow measurement

The measurement principle of an electromagnetic flowmeter is that when a liquid flows through a pipeline with a diameter of D at a flow rate of v, a magnetic flux density of B is generated inside the pipeline under the action of the excitation coil, which generates an electromotive force E: E=KXBXVXD proportional to the flow rate v

E-induced electromotive force K-meter constant

B - Magnetic induction density

V - Average flow velocity at the cross-section of the measuring tube D - Inner diameter of the measuring tube

The induced voltage signal is detected by two electrodes and transmitted to the converter through a cable. After a series of analog and digital signal processing, the cumulative flow and real-time flow are displayed on the display screen of the converter.

Reference conditions: (1) Medium: Water (2) Temperature: 20 ℃ (3) Pressure: 0.1MPa (4) Front straight pipe section: ≥ 5DN, rear straight pipe section: ≥ 2DN

① X [m/s]: Flow velocity

② Y [%]: actual measurement deviation (mV)

Technical Specifications

Power supply: 100-240VAC, 50/60Hz, 22VDC26VDC

Energy consumption: maximum 15VA

Signal cable: only applicable to remote control type

Shielded cable: signal part, wire: 0.5mm2 Cu/AWG20

Power supply: 24VDC... 36VDC

Load: ≤ 750 Ω

Signal output:

Digital output terminal: RS-485 interface, MODBUS-RTU

Analog output terminal: 4... 20 mA analog output

Pulse output terminal: Output pulse width: 0.25ms~100ms Duty cycle: 50% (pulse frequency ≥ 5Hz) Fmax ≤ 5000 cp/s 0-5000Hz, UOuter ≤ 36VDC

Measurement accuracy: ± 0.5% of the measured value (flow rate>1m/s);± 0.5% ± 2mm/s of the measured value (flow velocity<1m/s)

Maximum measurement error: ± 0.1C (within the measurement range of the temperature sensor)

Accuracy level: ± 0.5% R

Sensor temperature range: -20C... 120 ℃

Environmental temperature: The compact flow meter has a temperature of -10 ℃ ..55℃;Remote flowmeter converter -10 ℃ ..60℃； Remote flowmeter converter -10 ℃ ..55C

Storage temperature: -40 ℃ ..65℃

Material: Standard die cast aluminum, carbon steel (optional stainless steel flange)

Graphic display: monochrome LCD, white backlight; Size: 128 * 64 pixels

Display function: 2 images of measured values (measured values, conditions, etc.)

Measurement principle: Faraday's law of electromagnetic induction

Function: Real time flow, flow rate, mass flow (with constant density), real-time measurement, and flow accumulation

Module configuration: signal converter and measurement sensor

Protection level: Compact type: IP65Remote type: IP65 (IP68 optional)