●The instrument has the advantages of simple structure, reliable, no moving parts, long working life.

●無截流阻流部件，不存在壓力損失和流體堵塞現象。

● no closure flow components, no pressure loss and flow blockage.

●無機械慣性，響應快速，穩定性好，可應用于自動檢測、調節和程控系統。

● no mechanical inertia, fast response, good stability, and can be applied to the automatic detection, regulation and control system.

●測量精度不受被測介質的種類及其溫度、粘度、密度、壓力等物理理參數的影響。

The measuring accuracy is not affected by the measured medium types and its temperature, viscosity, density, pressure and other physical parameters.

●采用聚四氟乙烯或橡膠材質襯里和HC、HB、316L、Ti 等電極材料的不同組合可適應不同介質的需要。

● adopt different combinations of Teflon or rubber lining and HC, HB, 316L, Ti and other electrode materials can adapt to the needs of different media.

●備有管道式、插入式等多種流量計型號。

● a duct type, insert and other flow model.

●采用EEPROM存貯器，測量運算數據存貯保護**可靠。

● adopt EEPROM memory, operation safety and reliability of the data storage protection measure.

●具備一體化和分離型兩種形式。

The integration and separation of two forms.

●高清晰LCD背光顯示。

● HD LCD backlit display.

●適用于各種導電液體的體積流量檢測，如水、污水、泥漿飲料、化學原料、粘稠液體和懸浮液。

Volume flow measurement suitable for all kinds of conductive liquid, such as water, sewage, mud beverage, chemical raw materials, viscous liquid and suspension.

●不受流體溫度、壓力、密度、電導率等介質物理性質的工況條件的影響。

Effect of ● is not affected by the physical properties of fluid temperature, pressure, density, conductivity and other medium conditions.

●對強腐蝕性、強磨損性介質具有良好的適應性。

Having a good adaptability to strong corrosive, strong wear medium.

●量程比寬

● wide measurement range

●可測正反相流量，也可測脈動流量。

● measurable positive reverse flow, can also be measured pulsating flow.

 測量原理        

The principle of electromagnetic flowmeter based on Fala's law of electromagnetic induction:

當導電液體流過包圍在磁場中的測量管時，在流向和磁場二者相垂直的方向就會產生與平均流速V成正比的感應電動勢E。

When the conductive liquid flows through the surrounding the measurement in a magnetic field in the flow tube, and the two magnetic field perpendicular to the direction of produces and induced electromotive force is proportional to the average flow velocity of V E.

HN-LDG由傳感器和轉換器二部分組成，轉換器通過勵磁電纜將勵磁電流傳輸到傳感器內部的線圈，從而在傳感器測量管內產生磁場，流過測量管的導電液體因切割磁力線而產生感應電動勢，固定在測量管管壁二側的電極接收并通過信號電纜將該感應電動勢傳輸給轉換器，轉換器將該信號進行濾波、放大、運算、變換后，得出被測介質的流量值，并輸出與流量測量值成正比的標準電流信號或頻率信號。

HN-LDG consists of a sensor and converter is composed of two parts, the converter will coil excitation current is transferred to the sensor through the exciting magnetic field sensor cable, resulting in the measuring tube, conductive liquid flow through the measuring tube for cutting magnetic induction electromotive force generated, the electrode is fixed on the measuring tube wall and two side receives the induction electromotive force transmission the signal cable to the converter, converter converts the signal filtering, amplification, operation, after transformation, the measured medium flow value, and outputs and flow measurement value is proportional to the standard current signal or a frequency signal.