LWGY型渦輪流量計為一種速度式流量計量儀表。用于測量充滿封閉管道，連續(xù)流動的液體體積流量。LWGY型渦輪流量計與相應的流量顯示儀表——XSJ系列流量積算儀配套使用，也可與LWGY/TBS型轉換顯示器等組合在一起構成一體型，用來測量并顯示液體的瞬時流量和累積流量，且可輸出電壓及電流脈沖信號和/或標準電流信號，還具有失電數據保護功能和自診斷功能。

This instruction manual describes the standard specifications, model,installation,operation and maintenance of the turbine flow meter.Type LWGY turbine flow meter is a velocity flow meter.It is used to measure volume flow rate of a liquid that fills a closed pipeline and flows continuously in it.In actual application, Type LWGY turbine flow meter integrates with relevant flow indication instrument-XSJ Series flow integrating instrument, also, it may combine with LWGY /TBS converter display to form a integral type to measure and indicate flow raterate and quantity of a liquid, to pulse output signals and/or standard current signals and to provide power-off data protection.

渦輪流量計適合于測量粘度低的液體，具有精度高、可承受的工作壓力大、介質的溫度范圍寬等特點。廣泛用于石油化工、冶金、科研等領域，也可用于食品行業(yè)和液壓系統(tǒng)上。前置放大器按輸出信號型式分為：電壓脈沖型、4~20mA標準電流信號輸出型。按防爆型式分為普通型（非防爆）、隔爆型、本安型。流量檢測器有普通型、耐磨型和防腐蝕型，其中耐磨型除軸承和軸采用硬質合金（25mm口徑以下軸承采用紅剛玉）外，并設計成對葉輪有適當的反推力，使之更適合于測量汽油等潤滑性能較差的液體。防腐蝕型在壓力不超過1MPa,介質溫度為常溫下，可采用全塑結構。

The turbine flow meter is suitable for measuring a liquid flow rate of low viscosity, featuring a high accuracy and a strong bearing capacity of high process pressure.The product may be widely applied in petrochemical industry, metallurgical industry and other fields of scientific research. It may also be applied in food service industry and hydraulic systems. The pre-amplifiers are classified into common type, 4~20mA standard current signal output type and explosion proof type, and the flow detectors fall into common type, wearing resistant type and anti-corrosive type, among them, for the wearing resistant type, aside from its bearing and shaft made of hard metal (for a diameter lower than 25mm, red corundum will be used.), it has been designed to a pattern providing a proper reverse thrust to the impeller, which has made it more suitable for measuring liquids of poor lubrication.performance, such as gasoline etc.

3.主要技術性能

3.1 性能指標渦輪流量計的公稱通徑、公稱壓力、最大壓力損失、流量范圍等技術性能見表1。

3.1 Performance IndexFor technical performances of the turbine flow meter (transducer), namely Nominal Diameter, Nominal Pressure, Max. Pressure Loss, measuring Range etc., please see Table 1 for details.

注1: 通徑 32mm的無35MPa注2：“*”為特殊定貨。公稱通徑為0.5mm的,流量范圍為0.02～0.06 ，基本誤差：±1%讀數的，≤0.02  時，基本誤差：±1%FS。公稱通徑為1mm的流量范圍為0.03～0.100 ，基本誤差：±1%讀數的，≤0.03 時，基本誤差：±1%FS。  公稱通徑為2mm的，流量范圍0.040~0.13m3/h時，基本誤差：±1%讀數的；≤0.040m3/h時，基本誤差：±1%FS（滿度值的）。  公稱通徑為3mm的，流量范圍0.085~0.250m3/h時，基本誤差：±1%讀數的；≤0.085m3/h基本誤差：±1%FS（滿度值的）。  表中所示流量范圍為常規(guī)值，如有需要可根據用戶要求作適度擴展，其最低流速可擴展至0.3m/s左右，有的規(guī)格可更低些，擴展區(qū)域內的精度按滿度值的相對誤差表示。?8?5 被測量介質：液體（避免多相流）?8?5 介質粘度范圍：≤5mPɑ•S?8?5 標定：出廠前用水標定

Note: “*” stands for special order.   When the nominal diameter is 2mm and the flow rate range is 0.040~0.13m3/h, the intrinsic error  is: ±1% of reading, and when the flow rate is ≤0.040m3/h, the intrinsic error  is ±1% of full scale value.   When the nominal diameter is 3mm and the flow rate is 0.085~0.250m3/h, the intrinsic error  is: ±1% of reading, and when the flow rate is ≤0.085m3/h, the intrinsic error is ±1% full scale value The flow rate ranges indicated in the table are regular values, if needed, they may be properly expanded as user’s requirements. The minimum flow rate may be extended to about 0.3m/s, ,it may be still lower for some specifications, and accuracy in the extended area will be indicated as the relative error of the full range value.?8?5 Measured medium: liquid (avoiding multiphase flow)?8?5 Viscosity range of medium:≤5mPɑ•S?8?5 Calibration: calibrated with water before leaving the factory

3.2 正常工作條件  流體溫度范圍：-20～100℃次高溫型：-20～130℃，高溫型：-20～180℃                次低溫型：-40℃～常溫，低溫型：-196℃～常溫  環(huán)境溫度普通型： -25～55℃   防爆型： -20～40℃  環(huán)境濕度：≤80%RH（不結露）電源電壓：前置放大器24VDC（LWF-02，可拖動PLC），30VDC（LWF－11型電流脈沖前置放大器），5VDC（LWF-01，可拖動TTL），LWGY/TBS型轉換器24VDC±10%或電池供電

3.2 Normal Operating Conditions  Fluid temperature range:-20～+100℃，high temperature type -20~+150℃  Ambient temperature：-25～55℃  Ambient humidity：≤80%RH（non-condensing）  Supply voltage: preamplifier 24V DCType LWGY/TBS converter 24 VDC±10% or battery power supply.