一、產(chǎn)品簡介Product introduction
LZZH系列金屬管浮子流量計，是工業(yè)自動化過程控制中常用的一種面積流量測量儀表。它具有體積小，工作運行穩(wěn)定可靠，適用于測量液體，氣體、各種流量的測量和在各種環(huán)境中使用。

LZZH series of metal tube rotameter, Is the industrial automation process control in a common area of flow measuring instrument. It has the advantages of all volume, stable in operation and reliable, Suitable for measuring of liquid, gas, Using the measurement of various flow and in various environments.

LZDH系列金屬管浮子流量計智能變送器以MCU微處理器為核心，利用磁傳感器，通過數(shù)字濾波，軟件修正等數(shù)字信號處理技術(shù)，對磁場變化進(jìn)行檢測，并通過液晶顯示屏幕，提供良好的人機(jī)交互界面，可輸出4-20mA電流信號，上下限報警等多種信號。顯示瞬間流量和積累流量，為用戶提供更多方便，廣泛應(yīng)用于國防、化工、石油、冶金、能源、醫(yī)藥、輕工、食品、水處理等工業(yè)部門中的流量檢測和過程控制。

LZDH series of metal tube rotameter intelligent tranitter based on MCU microprocessor, The use of magnetic sensor, The digital filter, Digital signal processing technology such as software correction, To detect the changes in the magnetic field, And through the liquid crystal display screen, Provide good man-machine intece, Can output 4-20mA current signal, A variety of signal alarm etc.. Display and accumulated flow and instant flow, To provide more convenience for the user, Widely used in national defense, chemical, petroleum, metallurgy, energy, medicine, light industry, food, Water treatment Traffic detection and process control industries.

二、工作原理Working principle

被測介質(zhì)自下而經(jīng)測量管浮子，上下端產(chǎn)生差壓形成上升力，當(dāng)浮子所收上升力大于浸在流體中浮子重量，浮子便上升，環(huán)隙面積隨之增大，環(huán)隙處流體流速迅速下降，浮子上下端差壓降低，作用于浮子的上升力隨著減小，直到上升力與浸在流體中的浮子重量平衡時，浮子便穩(wěn)定在某一位置，浮子位置的高低即對應(yīng)著被測介質(zhì)流量的大小。浮子內(nèi)置磁鋼，在浮子隨介質(zhì)上下移動時，磁場隨浮子的移動而變化。

The measured medium flowing through the measuring tube from the bottom to the top of the float, Upper and lower producing differential pressure forming rising force, When the float, the lift is greater than the immersion float in the fluid weight, The float will rise, The annulus area increased, Ring gap flow velocity decreased rapidly, Upper and lower pressure reducing float, To float upward force with decreasing, Until the lift and dip in the fluid float weight balance, The float is stable at a certain position, The float position that corresponds to the measured medium flow. The built-in magnetic steel, The float with the medium moves up and down, The magnetic field with the float is moving.

對于就地型，由就地指示器中的隨動磁鋼與浮子內(nèi)磁鋼耦合，而發(fā)生轉(zhuǎn)動，同時帶動指針，通過刻度盤指示出此時流量大小。

For in situ type, By in situ indicator in the follow-up of magnet steel and float inside the magnet coupling, And rotate, At the same time to drive a pointer to, The scale indicates the size of the flow.

對于智能型，由智能型指示器中的隨動磁鋼與浮子內(nèi)磁鋼耦合，而發(fā)生轉(zhuǎn)動，同時帶動傳感器磁鋼及指針，通過一個磁傳感器將磁場變化轉(zhuǎn)化成電信號，經(jīng)A/D變換，數(shù)字濾波，溫度補償，微處理器處理，D/A輸出，LCD液晶顯示，來顯示出瞬時流量及累積流量大小。

For the intelligent, By the intelligent indicator in the follow-up of magnet steel and float inside the magnet coupling, And rotate, At the same time driven sensor magnet and pointer, By means of a magnetic sensor, the magnetic field changes into electrical signals, The A/D transform, digital filter, temperature compensation, microprocessor, D/A output, LCD liquid crystal display, to show the instantaneous flow and cumulative flow.