Electromagnetic flowmeter LDG intelligent electromagnetic flowmeter is composed of sensor and converter. It is based on Faraday's law of electromagnetic induction and is used to measure the volume flow of conductive liquids with a conductivity greater than 5 μS/cm. It is an inductive instrument that measures the volume flow of conductive media
According to Faraday's principle of electromagnetic induction, a pair of detection electrodes are installed on the tube wall perpendicular to the axis of the measuring tube and the magnetic force line. When the conductive liquid moves along the axis of the measuring tube, the conductive liquid cuts the magnetic force line to generate an induced potential. This induced potential consists of two Detected by the detection electrode, the value is proportional to the flow rate, and its value is:
Characteristics of electromagnetic flowmeter:
1. Basic functions
Low frequency square wave excitation, excitation frequency: 1/10 power frequency, 1/16 power frequency, 1/25 power frequency; high frequency square wave excitation, excitation frequency: 1/2 power frequency (applicable to slurry measurement) (optional) ; Excitation current can be selected as 125mA, 187.5mA, 250mA; empty tube measurement function without additional electrodes, continuous measurement, fixed value alarm; flow rate measurement range: 0.1 --- 15 m/s, flow rate resolution: 0.5 mm/ Seconds; AC high-frequency switching power supply, voltage application range: 85VAC --- 250VAC; DC 24V switching power supply, voltage application range: 16VDC --- 36VDC; network function: MODBUS, HART (optional); Chinese, English display mode, (Other languages ??can be customized);
There are three internal totalizers, which can be recorded separately: forward total, reverse total, and difference total.
2. Special functions
The electromagnetic flowmeter power-off time recording function automatically records the power interruption time of the instrument system and compensates for the leaked flow rate; the hour total recording function records the total flow rate in hours, which is suitable for time-sharing measurement system; infrared handheld operation keyboard, Remotely operate all functions of the converter without contact.
Smart electromagnetic flowmeter applications
In addition to measuring the volume flow rate of general conductive liquids, it can also be used to measure the volume flow rate of strong corrosive liquids such as strong acids and bases and uniform liquid-solid two-phase suspended liquids such as mud, ore pulp and paper pulp. It is widely used in the flow measurement of industrial sectors such as petroleum, chemical industry, metallurgy, textile, papermaking, environmental protection, food and municipal management, water conservancy construction, river dredging and other fields.