上海库科自动化科技有限公司-调整流量计使用说明书

00-300L -30-2L I -H 1141 | 02/03/2020 14-08 | t e c h n i c a l c h a n g e s r e s e r v e d FS100-300L-30-2LI-H1141Flow SensorTechnical dataFS100-300L-30-2LI-H1141100001034Medium temperature-25…+85 °C Application areaImmersion sensorApplication area liquids Bar length (L1)45 mmImmersion depth (L)16.9 mm(when using the supplied adapter) Process Pressure300 barFlow MonitoringResponse time T096 s Response time T053 sStandard flow range3…300 cm/sAny axial alignment of the sensor rod in the mediumExtended flow range1…300 cm/sExtended flow range comment Directed inflow to punch mark ±20 °Reproducibility 0.2…5 cm/s; for water 3…100 cm/s; 10…80 °C Temperature drift 0.5 cm/s × 1/K Temperature gradient≤ 300 K/min Temperature monitoringMeasuring range -25…85 °CFeatures■Screw-in adapter with process connection G1/2’’ male thread included in delivery ■M18 × 1.5 female to G1/2 inch male thread ■Electronics housing material/medium contact 1.4404 (316L)/1.4571 (316Ti)■Immersion depth 16.9 mm■Process value display via LED bar ■Flow monitoring for liquid media■Protection classes IP6K6K, IP6K7 and IP6K9K ■Adjustment of flow speed via teach function ■17…33 VDC■Analog output 4…20 mA ■M12 × 1 male connectorWiring diagramFunctional principleThe flow sensor functions according to thecalorimetric principle. The distinctive feature of this principle is that the flow rate correlates directly to the thermal loss of energy in theprobe. The increased loss of energy is therefore a direct measure of an increased flow rate.00-300L -30-2L I -H 1141 | 02/03/2020 14-08 | t e c h n i c a l c h a n g e s r e s e r v e d Technical data00-300L -30-2L I -H 1141 | 02/03/2020 14-08 | t e c h n i c a l c h a n g e s r e s e r v e dTechnical dataMounting instructions00-300L -30-2L I -H 1141 | 02/03/2020 14-08 | t e c h n i c a l c h a n g e s r e s e r v e dsensors without a switching output only have MAX/MIN Teach.00-300L -30-2L I -H 1141 | 02/03/2020 14-08 | t e c h n i c a l c h a n g e s r e s e r v e d LED displayLED ColorStatusDescriptionPWR GreenOnOperating voltage applied Device is operational FLT Red On Error displayed(for error pattern in combination with LEDs see manual)Off No errors displayed LOC Yellow On Device locked OffDevice unlockedFlashing Locking/unlocking process activeFLOW Yellow Flashing Teach mode/display of diagnostic data (see manual for specification)TEMPYellowFlashingTeach mode/display of diagnostic data (see manual for specification)For a detailed description of the display patterns and flashing codes see manual/operating instructions FS100 — compact flow sensors (D100002658)Accessories Wiring accessoriesDimension drawingTypeIdent. no.RKC4.4T-2/TEL6625013Connection cable, female M12, straight,4-pin, cable length: 2 m, sheath material:PVC, black; cULus approval; other cable lengths and qualities available, see WKC4.4T-2/TEL 6625025Connection cable, female M12, angled,4-pin, cable length: 2 m, sheath material:PVC, black; cULus approval; other cable lengths and qualities available, see Accessories。

容积式流量计使用说明书Shanghai Cixi Instrument Co. Ltd概 述LC 容积式流量计，系直读累积式液体流量计，LCB 型容积式流量计，是LC 型流量计的基础上增加了发讯机构，可与本厂产品《微机流量控制仪》配套，广泛用于管道中液体流量（总量）或瞬时流量的测量和自动控制。

由于它具有量程范围大，精度高，性能稳定，能测高温，高粘度液体，安装简易，操作方便等诸多优点，适用于石油开采、炼油、化工、商业、储油库等工业部门的流体计量。

工作原理液体流量的计量是在测量室内完成的(见图1)。

在测量室内有一对椭圆齿轮，在进口和出口两端液体压差作用下，一对椭圆齿轮在转轴上不停地转动，测出其转数即可知道流经仪表液体的总量。

如图1（a ）所示，一对椭圆齿轮A 、B 把进口与出口分开，在齿轮A 与计量室内壁形成一个新月形空间的液体称为“一份”（图上以阴影表示）。

齿轮A 有一转动矩，而齿轮B 上总力矩等于零。

齿轮A 带动齿轮B 转动。

图1（b ）是两轮的中间位置，当移动到位置如图1（c ）所示时，齿轮A 失去了转动力矩，而齿轮B 获得了转动力矩，齿轮B 带动齿轮A 转动，如图1（d ）所示。

图1 工作原理图结 构LC 型容积式流量计主要由计量室、密封机构和计数机构组成。

1、计量室：仪表躯壳①（图2、图3、以下同）有铸铁制成，它的内腔与盖板④组成测量室。

测量室内有两根不锈钢轴②，一对椭圆齿轮③就套在轴上，靠流量计进出口处的压力差推动而旋转，从而不断地把进口处的液体经新月形空腔计量后送到出口处，每旋转一周，累计处四倍新月形空间的体积。

椭圆齿轮与测量室内壁的间隙很小，仅几十微米，以减少仪表的泄漏量。

2密封机构：仪表的测量室是密封的。

小口径流量计采用永久性磁性密封机构（见图２）：Shanghai Cixi Instrument Co. Ltd由隔板⑧将主动永久磁铁⑥、被动永久磁铁⑦分开。

该结构灵敏度高，密封可靠；大口径流量计采用聚四氟乙烯塑料作填料密封（见图３）：通过调节螺母⑧来改变弹簧⑦的压缩量，使密封衬垫⑥伸张，达到密封目的。

LDBE系列电磁流量计LDBE型智能电磁流量计是我公司采用国内外最先进技术研制开发的全智能型电磁流量计，其全中文电磁转换器内核采用高速中央处理器。

计算速度非常快、精度高、测量性能可靠。

转换器电路设计采用国际先进技术，输入阻抗高达10的15次方欧姆，共模抑制比优于100db，对于外来干扰以及60Hz/50Hz干扰抑制能力优于90db,可以测量更低的电导率的流体介质流量。

其传感器采用非均匀磁场技术及特殊的磁路结构，磁场稳定可靠，而且大的缩小了体积，减轻了重复，使流量计小型流量化的特点。

产品特点：·管道内无可动部件，无阻流部件，测量中几乎没有附加压力损失。

·测量结果与流速分布，流体压力，温度、密度、粘度等物理参数无关。

·在现场可根据用户实际需要在线修改量程。

·高清晰度背光LCD显示，全中文菜单操作，使用方便，操作简单，易学易懂。

·采用SMD器件和表面贴装（SMT）技术，电路可靠性高。

·采用16位嵌入式微处理器，运算速度快精度高，可编程频率低频矩形波励磁，提高了流量测量的稳定性，功耗低。

·全数字量处理，抗干扰能力强，测量可靠，精度高，流量测量范围可达150：1·超低EM1开关电源，适用电源电压变化范围大，抗EMC性能好·内部具有三个积算器可分别显示正向累计反向累计量及差值积算量，内部设有不掉电时钟，可记录16次掉电时间·具有RS485、RS232、Hart和Modbus等安息字通讯信号输出。

·具有自检与自论断功能。

主要技术参数：◆测量流体:导电液体，浆液◆电导率:≥5μS/cm◆流速范围:0.3～1.2m/s，(0.1～15也有对应可能)◆流动方向:正、反、净流量◆精度等级:±0.2%，±0.3%，±0.5%◆重复性:±0.1%，±0.15%，±0.25%◆工作压力:0.25，0.6，1.0，1.6，4.0MPa（特殊耐压定制）◆流体温度:E级＜80℃、H级＜180℃◆防护等级：IP65、IP68◆电极材料：不锈钢、铂铱、哈氏（B、C）、钽、钛◆电极形式标准，刮刀，可拆式◆电极数量：2～6个◆内衬材料：氯丁橡胶、聚氯脂橡胶、F4(PTFE)、F46(ETFE)、PO、PPS、陶瓷◆法兰材料：碳钢、不锈钢◆表体材料：碳钢、不锈钢◆输出信号：标准电流4～20mA，全隔离，负载电阻＜750欧姆◆脉冲频率：0～1kHz光电隔离OCT，外接电源≤35V，导通是集电极最大电流为205mA ◆输出功能:正、反向、净流量信号◆通讯:RS-485◆报警（常开）空管、励磁、流量上下限◆工作电源:单相交流85～265V，45～63Hz，功率＜20W，直流24V10VA◆工作环境:温度：-25℃～60℃；湿度：5%～90%。

Flo-Tech, PFM6 流量压力检测仪使用说明书流量压力检测仪的使用要领1. 检测仪各部名称（图1）涡轮流量计各部名称（图2）2. Flo-tech检测仪参数* 为现用检测仪(1) 检测仪使用要点本检测仪操作简单，不需要特殊练习，就可以立刻使用。

为了正确的判断试验结果，有必要事先了解测试对象的液压系统和各液压执行部件，掌握必要的资料，比如：操作压力、流量、溢流阀设定压力、液压泵的最高输出压力、液压泵的性能曲线等。

①液压软管的连接检测仪如上表所示有三种机型，其软管的连接分两种类型a、PFM6-50、PFM6-85为1英寸的PT内螺纹。

b、PFM6-200上附有1英寸PT螺纹的连接器。

90°的管接头、T型管接头、阀等距离检测仪的输入端最好在30cm以上，因为这些部件将会给流体的测量带来误差。

软管的另一侧（与被测机器连接侧）通常与连接检测仪一侧为相同连接螺母，所以当管径或螺纹不同时，请利用转接器。

②操作要领检测仪的操作是简单的，但误操作将会给检测仪或被测试机器、回路带来不良影响。

使用者在使用前请读熟本使用说明书，避免误操作，以提高测试效率。

a、转换开关通常在中央位置（OFF）测试流量时请放在（FLOW）档位测试油温时请放在（TEMP）档位测试结束后，请勿必将开关拨回到OFF位置。

干电池使用过期电压下降时，仪表（流量、温度计上的冒号：）将发生闪烁。

此时，请更换干电池。

b、认真确认软管是否已正确无误地连接在检测仪的输入、输出端。

检测仪可以并列接入高压侧，但流向若是接反则不能测量正确的流量。

c、液压回路动作前，应将加载阀反时针方向旋转打开。

d、加载阀可以用手简单地进行操作，在加压和卸压时，请缓慢地进行操作。

e、液压回路动作停止之前，要将加载阀打开，确认压力是否已降到零。

在进行多项压力测试时，每一次测试结束，也都应该将加载阀先打开，然后进行下一个项目的测试。

f、安全圆片是保护检测仪和液压机器的，测试时，请密切注意压力表的读数，使之不要超过回路的最高压力。

目录一流量控制装置功能简介 (3)二流量控制装置工作原理 (4)三流量控制装置型号编制 (6)四流量控制装置主要技术指标 (7)五流量控制装置安装要求 (9)六流量控制装置分体结构 (12)七流量控制器电控部分操作说明 (13)一、LZJH-1型流量自动控制器功能简介流量自动控制器是由流量仪表和流量调节器组成。

图1 安装示意图高压自动流量测控装置是工业自动化过程测控中重要执行元件，随着工业领域的自动化程度迅猛发展，正被越来越多的应用在工业生产领域中。

我公司根据市场需求，参照国内外先进结构，采用先进的嵌入式微处理器技术和仪表控制技术，经与知名院校深入合作，共同研发出LZJH-1流量控制装置（简称控制器）。

该控制器广泛用于油田配注、化工、科研、工业污水处理等自动测控方案中。

流量控制装置是集多功能为一体的控制装置，具有动态平衡，静态自锁功能，采用多级密封结构，, 适合应用在高压并且对于泄漏要求严格的场合，也可用于母液配比混合液体的场合，控制装置体积小、控制精度高、响应灵敏，特别适合对压力、流量、液位、温度生产过程的调节。

控制方案多元化，采用嵌入式微处理器控制、控制精度高。

兼容多种信号输入方式：包括4～20mA、0～10KHz脉冲信号、RS485信号；同时具有多种输出信号方式：包括4～20mA电流信号和遵循标志MODBUS 通讯协议的RS485信号。

具有设备自检、故障自动提示、安全策略、误差自动调补、抗电磁干扰、断电自锁等功能。

二、流量控制装置工作原理流量控制装置通过采样配套电磁流量计的实时瞬时流量信号、通过嵌入式微处理器处理和智能控制策略，自动完成管道设定流量的调整。

在母液配比应用中，可通过同时采样母液流量和配比液流量，自动完成混合液的定量配比。

当您将所需要的流量设定值或混合液配比参数通过人机交互部分输入嵌入式控制器中，流量控制装置便可通过比较设定值和流量计采样值，结合智能的闭环控制策略，自动控制阀门调整机构实现流量的精确调整。

C O M PA N YInstallation, Operating & Maintenance ManualLiquid Flow Meters ©2016 AW-Lake Company. All rights reserved. Doc ID:FLOWLIQUIDMETERMAN082516Materials of Construction (Wetted Components)23Mechanical - Size CodeIntroductionThis manual is a service guide produced by the manufacturer and provides specific procedures and/or illustrations for disassembly, assembly, inspection, cleaning, and filtration. When followed properly, these procedures will keep your flow meter in top operating condition.It is important for operators and maintenance personnel to be safety conscious when operating or repairing equipment. Developing a thorough knowledge of the precautionary areas and following safe operating procedures can prevent equipment damage and/or personal injury. Before making any repair, read all of the repair procedures to learn the correct method and all precautions.Table of ContentsSpecifications and General Information.........................................................2-3 Basic Application Information.........................................................4 Warning and Precautionary Areas...................................................4Installation ........................................................................................................5 Basic Installation Instructions..........................................................5 Fluid Flow in Reverse Direction......................................................6 Bi-Directional Flow Measurement....................................................7Operation...........................................................................................................7 Operating Principles.....................................................................7 Reading the Meter. (8)Specific Gravity or Density Effect (8)Viscosity Effect (9)Troubleshooting & Maintenance (10)Disassembly (11)Cleaning and Inspection (12)Contamination and Filtration (13)Recommended Filtration (13)Contamination Sources (13)Basic Application InformationThe flow meter can be installed directly in the fluid line without flow straighteners or special piping. The meter is used to measure the flow rate of most liquidswhich do not contain particles greater than 74 micron.1. The flow indicator is sealed inside the Polycarbonate or Pyrex window tubeto permit use in areas where the meter may be sprayed or washed with soapand water.2. Mount the meter in the most convenient location to allow easy access forreading and maintenance.3. The meter should NOT be mounted near hot pipes or equipment which cancause deformation of the window tube and scale (Polycarbonate tube only).4. The meter should be mounted at least one foot (.3 meter) from large electricmotors, or the internal magnet may weaken or become demagnetized.Warning and Precautionary Areas1. The standard meters are designed to operate in systems that flow in onlyone direction: the direction of the arrow on the flow scale. Attemptingoperation in the reverse direction may cause damage to the meter or othersystem components. (See page 6-7 for reverse and bi-directional flowoptions)2. The window tubes of standard meters are made of Polycarbonate. Be sure touse cleaning agents only compatible with Polycarbonate.3. To retain accuracy and repeatability many internal moving parts are precisionmachined and require filtration of at least 74 micron or a 200 mesh screen.4. All meters are tested and calibrated at our test facility using a light hydraulicoil (DTE-25®) or water. The units are well drained, but some oil residue maystill remain within the meters. Please check the compatibility with your fluid.The meter may have to be cleaned before use. (See “Cleaning & Inspection”section)45. When installing aluminum or brass meters onto steel pipe caution should be taken not to over tighten the pipe connections. The thread in the meter end fittings may strip if over tightened.6. It is not recommended to install meters to unsupported piping.7. Operating Temperature: In standard meters, several components have a maximum temperature rating of 240°F (116°C). High temp version: 400°F (204°C) and Ultra high temp version: 600°F (315°C).8. Operating Pressure: Meters should not be used above the maximum rated operating pressure.9. Pressure and flow surges may disengage the outer magnet follower fromthe transfer magnet. If this occurs, a shock suppressor should be used to eliminate malfunction.10. Thread seal tape: Caution should be used when using thread seal tape on pipe thread joints. Leave the first thread of pipe thread exposed from end of pipe when applying tape.11. These meters, as well as many other meters, use an internal transfer magnet in the design. Because of this magnet, be aware of the following:a) Do not install near highly magnetic devicesb) If metal particles are moving through the system, a magneticfilter may be required.WARNING: Never subject an empty flow meter to an immediate high fluid flow. Always purge air from meters by gradually increasing system fluid flow.A sudden slug of high velocity liquid into an empty flow meter can cause permanent damage to the internals.InstallationBasic Installation InstructionsThe meters are mounted in-line and are direct reading. The meters can be mounted in a vertical or horizontal position as long as the fluid is flowing in the direction of the arrow on the flow scale. No straight pipe is required before or after the meter.When installing a meter, apply “Thread seal Tape” or “Liquid Thread Sealant”on pipe threads. If tape is used, be sure to leave the first pipe thread on end of pipe exposed. Position filter in front of meter and in a location that allows easy access for routine maintenance. Refer to “Warnings and Precautionary Areas” for additional information.5INSTALLATION DOS AND DON’TTo obtain satisfactory operation from a flow meter, the following points should be considered:DO:• Install a pressure gauge near the inlet of the meter• Place throttling valves at the outlet of the meter• Use pipe sealer on the connections• Install a union on one side of the meter for easy removal for maintenance andcalibration• Install solenoid valves at meter outlet (as far downstream as possible)• Mount either vertically or horizontallyDO NOT:• Use in systems where reverse flow is possible unless using RF option• Place meter in non-aligned piping• Over-flow the meter by more than 150% of maximum reading• Operate at pressures and temperatures greater than specified• Install restrictions between pressure gauges and the meter inlet• Install solenoid valves at the meter inletFluid Flow in Reverse DirectionThe standard meter should not see flow in the reverse direction (oppositedirection to the arrow on the flow rate scale). Prolonged flow in the reversedirection will cause damage to the standard meter’s internal mechanism that could result in inaccurate readings or premature failure of the meter. If the standardmeter will be installed in a system where reverse flow is possible, the factoryrecommends that a check valve be installed in parallel with the meter in orderto facilitate reverse flow around the meter. Check valves are readily availablethrough fluid component distributors.Alternatively, flow meters designed to allow reverse flow may be specified.These meters do not measure in reverse flow, for that Bi-Directional meters are available. These meters are designated by a “-RF” suffix attached to the end of the standard 8-digit model code.Reverse flow meters will allow flows in the reverse direction of up to themaximum flow rate on the flow rate scale without any damage to the meter’sinternals.6Bi-Directional Flow MeasurementIn certain situations it may be necessary to measure flow rates in both directions. For a small additional fee, an option for bi-directional flow measurement may be specified. Meters that include this option are designated by a “-BI” suffix attached to the end of the standard 8-digit model code.*Not all flow ranges are available in Bi-Directional meters. Contact factory for more information on reverse and bi-directional flow.OperationOperating PrinciplesWe have developed a line of unique flow meters which combine the simplicity ofa sharp-edged orifice disk and a variable area flow meter. See Illustration 1 “Flow Meter Cross Section”.The meters are tubular, with all internal wetted parts sealed within the body casing. Running through the center of the body casing is a tapered center shaft which is centered in the bore by pilot disks at each end. Encircling the shaft isa sharp-edged, floating orifice disk, transfer magnet and return spring. The disk and transfer magnet are held in the “no flow” position by the biased return spring. As the flow moves through the meter it creates a pressure differential across the floating orifice disk, forcing the disk and transfer magnet against the return spring. As flow increases, the pressure differential across the disk increases, forcingthe disk and transfer magnet to move along the tapered center shaft. As flow decreases, the biased return spring forces the disk and transfer magnet down the tapered center shaft, returning to the “no flow” position.In metal casing meters the movement of the floating orifice disk and transfer magnet cannot be seen because they are sealed inside the body casing. Therefore, a magnet follower is positioned around the outside of the body casing and is magnetically coupled to the internal transfer magnet. As the flow rate increases, the internal magnet moves along the tapered center shaft (inside the body casing) and the magnet follower moves along the outside of the body casing (under the scale).7Reading the MeterNotice the black reference line which runs 360° around the white magneticfollower. This reference line moves under the scale in direct relation to themovement of the internal orifice disk. When fluid is flowing, the flow rate through the meter is read by lining up the black reference line with the closest rate line on the external flow scale.Specific Gravity or Density EffectStandard meters are calibrated for either water with a specific gravity of 1.0 oroil with a specific gravity of .873. The meter is affected by fluid density as aremost other similar type meters. Our meters have less of this effect because ofthe sharpness of the floating orifice disks being used. The indicated flow reading will read high for heavier fluids and low for lighter fluids. A corrective factor can be applied to the standard scale or a special scale can be added at a slightadditional costs. When measuring fluids with other specific gravities, the basicequations below can be used to develop corrected readings.For water meters use: √ 1.0/specific gravity x scale readingFor oil meters use: √.873/specific gravity x scale reading8Viscosity EffectThe meters incorporate a unique floating, sharp-edged orifice disk. The floating, sharp-edged orifice disk offers greater operating stability and accuracy overa wide range of viscosities. Standard viscosities up to 110 cSt. For viscosities between 110 to 430 cSt contact factory.Special ScalesSpecial calibrations can be performed by the factory to correct for the following system characteristics:• System temperature• Media specific gravity• Various measuring units (i.e. LPM, LPS, m3/hr, etc.)• Viscosity• Any combination of the aboveConsult factory or your distributor for details and prices.9Troubleshooting & Maintenance1011DisassemblyIMPORTANT: It is not necessary to remove window tube or window seals to clean the meter. Note also how the meter disassembles for ease of reassembly.WARNING: Shut down system before removing meter from flow line.1. Use a clean dry cloth to remove all foreign material from exterior of meter, especially around threaded ends.2. Remove meter from the flow line.3. With the arrow on the scale pointing upward, mount the meter in a vice. See Illustration 2. Use the flats of the inlet end porting when securing the meter in the vice.IMPORTANT: DO NOT wrench or tighten vice on window tube.4. Install a wrench across the flats of the outlet end porting and turn counterclockwise to loosen assembly. Do not remove end porting at this time.5. Remove meter from vice. Hold the meter so the end port that is loose, is on top. Remove loose end porting.Illustration 2Illustration 36. Tilt the open end of meter over a clean cloth to expose inner cartridge.See Illustration 3. Remove inner cartridge assembly from body casing.Note: Because the transfer magnet is magnetically coupled to the magneticfollower, you will notice a slight resistance when removing cartridge. Ifcartridge does not slide out, insert a wooden dowel in opposite end of meterand push or lightly tap on dowel until cartridge comes loose.IMPORTANT: If inner cartridge does not slide out freely, it may be sign ofcontamination. The transfer magnet is a powerful magnet. Keep it away frommetal chips and fillings. They may be hard to remove when reassembling and will cause premature failure.7. Examine inner cartridge or level of contamination.8. If inner cartridge has a low level of contamination and is functioning properly,no further disassembly is required. Proceed to “Cleaning and Inspection. Ifthe inner cartridge is damaged or contaminated beyond repair, the completemeter can be sent to the manufacturer for evaluation. The manufacturer willrepair or replace parts as needed.Cleaning & Inspection1. Inspect inner cartridge and body casing for contamination. If the innercartridge did not slide out freely, it may be a sign of contamination. Locateand eliminate the source of contamination before reconnecting meter to thesystem or the same problem will reoccur. It may be necessary to install finerfiltration or a magnetic filter in the system.2. Soak inner cartridge assembly in a suitable cleaning solvent. Naptha orStoddard is recommended.3. Remove parts from solvent. Use an air hose and/or scrub with a light brushto remove any remaining contaminants. Remove any magnetized particlesfrom transfer magnet.4. Inspect inner cartridge for scored or worn parts.5. Remove any contaminants from inside body casing.6. Clean the window tube with soap and water, or a compatible cleaningsolvent.IMPORTANT: Some solvents may cause damage to the polycarbonate tube,check compatibility of solvent being used.7. Clean and inspect seal assemblies (O-rings and seals) for nicks or cuts.Replace as needed.12Properly filtered meters will provide years of trouble-free service. If the meter is not properly filtered, it may be damaged and malfunction. Meter damage causedby excessive contamination is not covered under warranty. Contamination and FiltrationRecommended FiltrationThe manufacturer recommends system filtration of at least 74 micron filter ora 200 mesh screen. It has been found that if inadequate filtration has caused meter failure, it will normally fail in the open position. Some systems may requirea magnetic filter.IMPORTANT: Meter damage caused by excessive contamination is not covered under warranty.Contamination SourcesFresh FluidWhen fresh fluid is stored in holding tanks, it may be contaminated with scale or metal flakes from inside the tank. To prevent this type of contamination, be sureto filter fresh fluid before adding to the system.New Machinery ContaminationWhen building new machines, a certain amount of built-in contamination is unavoidable. Typical built-in contamination consists of dust, dirt, chips, fiber, sand, flushing solutions, moisture, weld splatters and pipe sealants. Flushing the system before operation can reduce contamination, but cannot eliminate it totally. Unless the system is flushed at a high velocity, some contamination will not be dislodged until the system is in operation. System contamination can cause fluid component malfunction.Environmental ContaminationWhen performing routine maintenance, the system’s fluid is commonly exposedto environmental contamination. Exercise caution during routine maintenance to prevent this type of contamination. Be sure to change breather filter and systems air filter regularly.Self-Generation ContaminationSelf-generated contamination is a product of wear, cavitation, fluid breakdown and corrosion. Systems that are carefully flushed, maintained, and have fresh fluid added, mainly have self-generated contamination. In this case, proper filtration can prevent fluid component malfunction.131415414.574.4300 | 2440 W. Corporate Preserve Dr. #600, Oak Creek, WI, 53154C O M PA N Y©2016 AW-Lake Company. All rights reserved. Doc ID:FLOWLIQUIDMETERMAN082516。

一、概述测量原理电磁流量传感器是基于法拉第电磁感应定律而制成的，只是其中切割磁力线的导体不是一般的金属，而是具有一定电导率的液态流体或液固两相流体。

被测量的导电介质在磁场中作切割磁力线运动时，导电介质中会产生感应电动势，感应电动势由一对电极检测，该电压信号VE 可用下式表示：VE =K B D V K：比例常数B：磁感应强度D：测量管内径V：测量管内径截面内的平均流速信号VE 经转换器处理，再经微处理器处理后,输出与流量成线性关系的信号(模拟电流4～20mADC、脉冲0～1000HZ),以供后位仪表积算或控制,也可与上位机通讯(RS-485)。

产品特点*低频三值矩形波恒流励磁，不受工频及现场各种杂散干扰的影响,工作十分稳定可靠。

*采用非均匀磁场的新技术及特殊的磁路结构,大大缩小了体积,减轻了重量,具有小型轻量化特点。

一体式电磁流量计分体式电磁流量计*具有隔离的RS485通讯功能,隔离的脉冲输出,微处理器能自动空管检测,空管复零。

*在现场可根据用户实际需要,在线修改量程、介质密度、流量单位等参数。

*无可动部件、无阻流部件,测量中几乎无附加压力损失。

*测量结果与流速分布、液体压力、温度、密度、粘度等物理参数无关。

*使用方便,安装后只需接上电源,即可使用。

瞬时、累计量直接中文显示于液晶屏上下两排。

应用领域由于电磁流量计有其独特的特点,因此被广泛应用于化工化纤、食品、造纸、制糖、矿冶、给排水、环保、水利水工、钢铁、石油、制药等工业领域中,用来测量各种酸、碱、盐溶液、泥浆、矿浆、纸浆、煤水浆、玉米浆、纤维浆、糖浆、石灰乳、污水、冷却原水、给排水、盐水、双氧水、啤酒、麦汁、各种饮料、黑液、绿液等导电流体介质的流量。

二、主要技术标准公称通径系列DN(mm)橡胶衬：32，40，50，65，80，100，125，150，200，250，300，350，400，450，500，600Po衬：5，8，10，15，20，25，32，40，50，65，80，100，125，150，200，250，300，350，400，450，500，600四氟衬：10，15，20，25，32，40，50，65，80，100，125，150，200，250，300，350，400，450，500，600精度等级0.5级，1.0级被测介质温度橡胶衬里：-20～+60℃；高温橡胶衬里：-20～90℃；聚四氟乙烯（PTFE）衬里：-25～+140℃；Po衬里：-30～+105℃额定工作压力DN10~DN65:2.5MPa;DN80~DN150:1.6MPa;DN200~DN600:1.0MPa*其它特殊压力（如6.4MPa）订货时请注明流量测量范围对应流速范围：0.05～10m/s电导率范围被测流体电导率不小于20us/cm输出信号及负载电阻电流信号：4-20mADC，0-750Ω；脉冲信号：0-1000Hz，占空比50%通讯信号（RS485）同类接口最多可接256个，并在电气上是完全隔离的。

指导手册AB300型控制阀AB300型阀指导手册索引编号. 目录页1. 控制阀的安装 (1)1.1 与安装有关的一般注意事项 (1)1.2 阀的安装（焊接到管路上） (1)1.3 管路的清洗 (1)2. 阀体的检修 (2)2.1 阀体与阀帽的拆卸 (2)2.2 阀帽的检修过程 (2)2.3 阀帽的安装过程 (2)3. 内部阀的检查过程 (3)4. 内阀的检测与维护过程 (3)4.1 内阀间隙的控制 (3)5. 安装内阀的过程 (4)5.1 压盖填料的安装过程 (4)6. 排除故障的措施 (5)7. 控制阀的操作 (6)1. 控制阀的安装在安装之前，请通读本安装手册。

1.1 与安装有关的一般注意事项(1) 安装阀的管路应该足够大，足以承受阀中产生的较高的压力损耗。

(2) 阀应垂直朝上安装，且应在阀的入口和出口处加以支撑，以承受阀和管路的重量。

(3) 不要固定执行机构如隔膜片、盖等。

(4) 在将阀安装到管路上之前，首先应通过阀体上雕刻的印记或铸造印记确定液体流动方向，然后才将阀安装到管路上。

1.2 阀的安装（焊接到管路上）就焊接热或焊后热处理而言，在实施这种作业时应该注意下列事项。

·如果要进行焊后热处理作业，则只在阀体的入口和出口处使用隔热材料，而不要对整个阀体进行隔热。

1.3 管路的清洗(1) 内阀的阀塞和阀笼之间的间隙是很小的，所以阀中夹杂非常小的杂质都会引发故障。

因此，应仔细清洗管道。

(2) 由于阀体的底部是空的，因此杂质容易聚集于此。

应充分地冲洗管道。

(3) 冲洗一般在阀完全打开的情况下进行，然而，最好的清洗方法是在卸下内阀后再进行清洗。

如果在卸下内阀后再进行清洗，则应遵循以下措施。

要非常小心地进行这种作业，不要损坏阀笼和阀体之间的接触面。

2. 阀体的检修2.1 阀体与阀帽的拆卸(1) 在拆卸阀帽之前，应先拆卸掉固定压盖填料的螺母。

同时，还应拆卸掉密封压盖随动件以及填料函。

(2) 用填料夹具将压盖填料拆下。