CSB-EL011580RA大鼠白介素10(IL-10)ELISA KIT

 Rat Interleukin 10(IL-10)  

ELISA Kit

 

 

 

Catalog No. CSB-E04595r

(96T)

 

 

 

 

 

l          This immunoassay kit allows for the in vitro quantitative determination of rat IL-10 concentrations in serum, plasma and Tissue Homogenates.

l          Expiration date   six months from the date of manufacture

l          FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC PROCEDURES.

 

 

PRINCIPLE OF THE ASSAY

The microtiter plate provided in this kit has been pre-coated with an antibody specific to IL-10. Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated polyclonal antibody preparation specific for IL-10 and Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. Then a TMB (3,3',5,5' tetramethyl-benzidine) substrate solution is added to each well. Only those wells that contain IL-10, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of a sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The concentration of IL-10 in the samples is then determined by comparing the O.D. of the samples to the standard curve.

DETECTION RANGE

3.12 pg/ml-200 pg/ml. The standard curve concentrations used for the ELISA’s were 200 pg/ml, 100 pg/ml, 50 pg/ml, 25 pg/ml, 12.5 pg/ml, 6.25 pg/ml, 3.12 pg/ml.

SPECIFICITY

This assay recognizes rat IL-10. No significant cross-reactivity or interference was observed.

SENSITIVITY

The minimum detectable dose of rat IL-10 is typically less than 0.78 pg/ml.

The sensitivity of this assay, or Lower Limit of Detection (LLD) was defined as the lowest protein concentration that could be differentiated from zero.

MATERIALS PROVIDED

Reagent 

Quantity

Assay plate

1

Standard

2

Sample Diluent 

1 x 20 ml

Biotin-antibody Diluent 

1 x 10 ml

HRP-avidin Diluent  

1 x 10 ml

Biotin-antibody 

1 x 120μl

HRP-avidin

1 x 120μl

Wash Buffer  

1 x 20 ml

 (25×concentrate)

TMB Substrate 

1 x 10 ml

Stop Solution 

1 x 10 ml

STORAGE

1.      Unopened test kits should be stored at 2-8°C upon receipt and the microtiter plate should be kept in a sealed bag. The test kit may be used throughout the expiration date of the kit, provided it is stored as prescribed above. Refer to the package label for the expiration date.

2.      Opened test plate should be stored at 2-8°C in the aluminum foil bag with desiccants to minimize exposure to damp air. The kits will remain stable until the expiring date shown, provided it is stored as prescribed above. 

3.      A microtiter plate reader with a bandwidth of 10 nm or less and an optical density range of 0-3 OD or greater at 450nm wavelength is acceptable for use in absorbance measurement.

REAGENT PREPARATION

Bring all reagents to room temperature before use.

1.        Wash Buffer  If crystals have formed in the concentrate, warm up to room temperature and mix gently until the crystals have completely dissolved. Dilute 20 ml of Wash Buffer Concentrate into deionized or distilled water to prepare 500 ml of Wash Buffer.

2.        Standard  Centrifuge the standard vial at 6000-10000rpm for 30s. Reconstitute the Standard with 1.0 ml of Sample Diluent. This reconstitution produces a stock solution of 200 pg/ml. Allow the standard to sit for a minimum of 15 minutes with gentle agitation prior to making serial dilutions. The undiluted standard serves as the high standard (200 pg/ml). The Sample Diluent serves as the zero standard (0 pg/ml). Prepare fresh for each assay. Use within 4 hours and discard after use.

3.        Biotin-antibody  Centrifuge the vial before opening. Dilute to the working concentration using Biotin-antibody Diluent(1:100), respectively.

4.        HRP-avidin  Centrifuge the vial before opening. Dilute to the working concentration using HRP-avidin Diluent(1:100), respectively.

Precaution: The Stop Solution provided with this kit is an acid solution. Wear eye, hand, face, and clothing protection when using this material.

OTHER SUPPLIES REQUIRED

          Microplate reader capable of measuring absorbance at 450 nm, with the correction wavelength set at 540 nm or 570 nm.

          Pipettes and pipette tips.

          Deionized or distilled water.

          Squirt bottle, manifold dispenser, or automated microplate washer.

          An incubator which can provide stable incubation conditions up to 37°C±0.5°C.

SAMPLE COLLECTION AND STORAGE

l          Serum  Use a serum separator tube (SST) and allow samples to clot for 30 minutes before centrifugation for 15 minutes at 1000 g. Remove serum and assay immediately or aliquot and store samples at -20°C. Centrifuge the sample again after thawing before the assay. Avoid repeated freeze-thaw cycles.

l          Plasma  Collect plasma using citrate, EDTA, or heparin as an anticoagulant. Centrifuge for 15 minutes at 1000 g within 30 minutes of collection. Assay immediately or aliquot and store samples at -20°C. Centrifuge the sample again after thawing before the assay. Avoid repeated freeze-thaw cycles.

l          Tissue Homogenates   100mg tissue was rinsed with 1X PBS, homogenized in 1 mL of 1X PBS and stored overnight at -20° C. After two freeze-thaw cycles were performed to break the cell membranes, the homogenates were centrifuged for 5 minutes at 5000 x g, 2 - 8°C. The supernate was assayed and removed immediately. Alternatively, aliquot and store samples at -20°C or -80. Centrifuge the sample again after thawing before the assay. Avoid repeated freeze-thaw cycles.

Note: Grossly hemolyzed samples are not suitable for use in this assay.

 

 

 

ASSAY PROCEDURE

Bring all reagents and samples to room temperature before use. It is recommended that all samples, standards, and controls be assayed in duplicate. All the reagents should be added directly to the liquid level in the well. The pipette should avoid contacting the inner wall of the well.

1.        Add 100μl of Standard, Blank, or Sample per well. Cover with the adhesive strip. Incubate for 2 hours at 37°C.

2.        Remove the liquid of each well, don’t wash.

3.        Add 100μl of Biotin-antibody working solution to each well. Incubate for 1 hour at 37°C. Biotin-antibody working solution may appear cloudy. Warm up to room temperature and mix gently until solution appears uniform.

4.        Aspirate each well and wash, repeating the process three times for a total of three washes. Wash: Fill each well with Wash Buffer (200μl) and let it stand for 2 minutes, then remove the liquid by flicking the plate over a sink. The remaining drops are removed by patting the plate on a paper towel. Complete removal of liquid at each step is essential to good performance.

5.        Add 100μl of HRP-avidin working solution to each well. Cover the microtiter plate with a new adhesive strip. Incubate for 1 hour at 37°C.

6.        Repeat the aspiration and wash five times as step 4.

7.        Add 90μl of TMB Substrate to each well. Incubate for 10-30 minutes at 37°C. Keeping the plate away from drafts and other temperature fluctuations in the dark.

8.        Add 50μl of Stop Solution to each well when the first four wells containing the highest concentration of standards develop obvious blue color. If color change does not appear uniform, gently tap the plate to ensure thorough mixing.

9.        Determine the optical density of each well within 30 minutes, using a microplate reader set to 450 nm.

CALCULATION OF RESULTS

Using the professional soft "Curve Exert 1.3" to make a standard curve is recommended, which can be downloaded from our web.

Average the duplicate readings for each standard, control, and sample and subtract the average zero standard optical density. Create a standard curve by reducing the data using computer software capable of generating a four parameter logistic (4-PL) curve-fit. As an alternative, construct a standard curve by plotting the mean absorbance for each standard on the x-axis against the concentration on the y-axis and draw a best fit curve through the points on the graph. The data may be linearized by plotting the log of the IL-10 concentrations versus the log of the O.D. and the best fit line can be determined by regression analysis. This procedure will produce an adequate but less precise fit of the data. If samples have been diluted, the concentration read from the standard curve must be multiplied by the dilution factor.

LIMITATIONS OF THE PROCEDURE

          The kit should not be used beyond the expiration date on the kit label.

          Do not mix or substitute reagents with those from other lots or sources.

          It is important that the Standard Diluent selected for the standard curve be consistent with the samples being assayed.

          If samples generate values higher than the highest standard, dilute the samples with the appropriate Standard Diluent and repeat the assay.

          Any variation in Standard Diluent, operator, pipetting technique, washing technique, incubation time or temperature, and kit age can cause variation in binding.

 

          This assay is designed to eliminate interference by soluble receptors, binding proteins, and other factors present in biological samples. Until all factors have been tested in the Immunoassay, the possibility of interference cannot be excluded.

TECHNICAL HINTS

          Centrifuge vials before opening to collect contents.

          When mixing or reconstituting protein solutions, always avoid foaming.

          To avoid cross-contamination, change pipette tips between additions of each standard level, between sample additions, and between reagent additions. Also, use separate reservoirs for each reagent.

          When using an automated plate washer, adding a 30 second soak period following the addition of wash buffer, and/or rotating the plate 180 degrees between wash steps may improve assay precision.

          To ensure accurate results, proper adhesion of plate sealers during incubation steps is necessary.

          Substrate Solution should remain colorless or light blue until added to the plate. Keep Substrate Solution protected from light. Substrate Solution should change from colorless or light blue to gradations of blue.

          Stop Solution should be added to the plate in the same order as the Substrate Solution. The color developed in the wells will turn from blue to yellow upon addition of the Stop Solution. Wells that are green in color indicate that the Stop Solution has not mixed thoroughly with the Substrate Solution.

 

 

该公司产品分类: 科研试剂

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该公司产品分类: 轴承

RJ518050旋转关节--K型接头 单路同轴旋转关节

  

RJ518050旋转关节产品特征:

 [DC to 40 GHz] 

0-40GHz
  • K型接头
  • 接触式单路同轴旋转关节,可传输直流电
  •  

    技术参数:

    Specifications

     Interface Type  2.92 Female ( 50 ohms )  Style  I Type
     Frequency Range  DC to 40 GHz  Phase WOW (Degrees Max.)  1°
     VSWR, Max.  1.30  @  DC  to  10 GHz  Insertion Loss, ,Max.  0.25 dB @ DC  to  10 GHz
     1.45  @ 10  to  20 GHz  0.40 dB  @ 10  to  20 GHz
     1.60  @ 20  to  30 GHz  0.55 dB  @ 20  to  30 GHz
     1.75  @ 30  to  40 GHz  0.70 dB  @ 30  to  40 GHz
     VSWR WOW  0.1  Insertion Loss WOW  0.02 dB
     Peak Power, Max.  500 W  Average Power, Max.  60 W @ 1 GHz
     Rotating Speed, Max.  250  rpm  Life Time, Min.   5 Million Revolutions
     Starting Torque  3.5 Ncm.  Continuous Rotational Torque  3.5 Ncm Max.
     Axial Load On Interface, Max  ± 1 N  Radial Load On Interface, Max.  ± 1  N
     Body Material  Stainless Steel  Contact Pin Material  Beryllium Copper
     DC Power Ability  3 A * 24V @ Full RF Power  Contact Surface Finish  Gold Plate
    Weight  0.014 kg  Marking  Adhesive Label
    Insulator Material  PTFE / Teflon  IP Protection Level  IP 64 Per EN 60529
    Temperature(Ambient Range)  -40  to +60 °C (Operation)  Humidity  85%  (Operation)
     -50  to +70 °C (Storage)  (Non-Condensing), Max.  95%  (Storage)
    如对产品有任何疑问,可电话联系雅驰,雅驰实业供应旋转关节、微波射频器件,质量保证,欢迎咨询洽谈:。
    该公司产品分类: 卫星天线 惯性导航系统 天线 微波射频仪器 通讯仪器仪表 光通讯仪器仪表 光学仪器仪表 光通讯仪器仪表

    KEM自动滴定仪AT-710系列

    KEM自动滴定仪AT-710系列KEM自动滴定仪AT-710系列主要特点:AT-710M:触摸屏和操作单元之间无线连接,同时控制四台自动滴定测量单元。通过使用无线适配器(蓝牙),操作单元和滴定装置可以不用电缆连接。在测量样品过程中有危害性气体时,可将滴定装置放置在排烟柜中,由无线传输的操作单元执行滴定。AT-710M/AT-710S:滴定剂的信息存储在滴定管上的芯片中。即使滴定管单元转移到另一个滴定装置,也不需要重新输入滴定剂信息。AT-710M/AT-710S/AT-710B:滴定管单元特殊的开关阀门。减少滴定管和开关阀门间的死体积。特殊结构的设计可减少滴定剂的使用量和快速更换滴定单元。AT-710M/AT-710S/AT-710B:智能化电极电缆。电极的信息可透过电缆上传感器存储相关资料。电极校准的数据可应用到不同的自动滴定仪上。KEM自动滴定仪AT-710系列技术参数:

    名称

    自动电位滴定仪

    仪器型号

    AT-710M

    AT-710S

    AT-710B

    仪器组成

    MCU-710M+AT-710+螺旋桨或磁力搅拌器

    MCU-710S+AT-710+螺旋桨或磁力搅拌器

    AT-710+螺旋桨或磁力搅拌器

    测量范围

    1)电位: -2000.0~2000.0mV2) pH: -20.000~20.000pH3)温度: 0~100°C

    滴定方式

    自动滴定,自动间歇滴定,间歇滴定,恒pH滴定

    石油中和值滴定,COD滴定

    滴定类型

    电位滴定(酸碱,氧化还原,沉淀),光度滴定,极化滴定,电导滴定

    终点判断

    全量滴定(自动终点),自动终点滴定,设定终点滴定

    交叉点滴定,自动终点/设定终点滴定

    特殊应用

    量电极电位(pH, mV),酸解离常数(pKa)

    同时记录双通道电位,学习滴定

    输入设置

    触摸屏输入

    按键输入

    显示

    1) 8.4英寸彩色液晶屏,800x600点

    1) LED背景光源液晶屏

    2)英文/日文/中文/韩文/俄文/西语/德语/法语

    2)英文/日文/中文/韩文/俄文/西语

    3)四个通道同时显示

    3)一个通道显示

    3)一个通道显示

    计算

    浓度计算,统计计算(平均值,标准差,相对标准差),自动输入空白和滴定度

    数据储存

    500组样品结果

    50组样品结果

    GLP认证

    登记操作者/使用群组管理滴定剂:提示滴定度测量日期/指示滴定剂剩余量/提示滴定管活塞更换日期/提示滴定剂换日期/滴定度测量履历性能检查:提醒计划检查日期/记录检查结果电极管理:记录校正日期/记录校正履历/电极检查/电极检查履历滴定管验证:验证/记录验证结果时间管理:显示操作时间

    登记操作者/记录检查结果/电极校正记录/滴定管精度确认/时间管理

    滴定管单元

    20mL玻璃滴定管附褐色保护套(标配),选配: 10mL,5mL或1mL

    滴定管精确度

    50mL滴定管(自动注入器): ±0.5mL20mL滴定管: 0.02mL         重复性: 0.01mL10mL滴定管: 0.015mL       重复性: 0.005mL5mL滴定管: 0.01mL           重复性: 0.003mL1mL滴定管: 0.005mL         重复性: 0.001mL

    扩大器

    1) STD: pH(mV), mV,双通道(标配)2) PTA: pH(mV), mV,光度,三通道3) POA: pH(mV), mV,极化,三通道4) CMT: pH(mV), mV,电导,三通道5) TET: pH(mV),pH(mv), mV,三通道

    外部输出

    RS-232C x3

    RS-232C x 2

    打印机,电子天平,数据软件(SOFT-CAP)

    USB x; 1

    USB x 1

    U盘,热敏打印机,A4打印机,键盘,            条码机,脚踏开关, USB集线器

    U盘,热敏打印机,键盘,条码机,脚踏开关, USB集线器,安卓设备

    LAN x 1 :电脑(PC)

    扩充功能

    测量单元:电位滴定仪(AT-710)容量水分仪(MKV-710)库仑水分仪MKC-710)最多四台测量单元

    自动活塞滴定管:最多可控制10台滴定管驱动单元(包括主机两台)

    多样品自动进样器: CHA-600,CHA-700

    CHA-700

    使用环境

    1)温度: 5~35°C2)相对湿度: 85%RH以下

    电源

    AC100~240V,50Hz/60Hz

    耗电量

    主机:约30瓦打印机:约7瓦

    主机:约20瓦打印机:约7瓦

    尺寸

    触摸屏: 225(W) x 190(D) x 42(H)mm

    滴定单元: 141(W) x 296(D) x 367(H)mm(不包括管路)打印机: 106(W) x 180(D) x 88(H)mm

    重量

    触摸屏:约1.5公斤

    滴定单元:约4.0公斤打印机:约0.4公斤

     

    该公司产品分类: 电磁旋转粘度计 热分析相关仪器 石油产品专用仪器 食品饮料专用仪器 热流计、热流仪 导热仪、热导仪 糖度计、糖度仪 折光仪、折射计 密度计、密度仪 卡氏水分测定仪 自动电位滴定仪

    BQS2KWBQS2KW排污排沙潜水泵

    BQS2KW排污排沙潜水泵

    产品介绍    BQS(W)矿用隔爆型排污排沙潜水电泵,是泵和电动机组合一体的电力排灌设备,外型美观,结构简单,密封性能好,性能稳定,寿命长,安装使用方便,且可以长期在水下连续作业,被广泛用于煤矿立井、斜井及井底散煤泥地自动化排水。内装式电泵,水由电动机夹层中流过,有效的延长了电泵的使用寿命;外装式电泵,叶轮采用双流道大过流结构,运行平稳,排污能力强,防缠绕,无堵塞现象,并且有体积小,重量轻,携带方便的特点。结构特点    BQS(W)系列的矿用隔爆型排污排沙潜水电泵严格根据煤炭行业标准MT/T671-2005《煤矿用隔爆型潜水电泵》、中华人名共和国国家执行标准GB3836-2000《爆炸性气体环境用电气设备》设计制作,电动机采用Y型干式隔爆型三相异步电动机,具有启动转矩大、运行性能好、噪声低、体积小、重量轻、维护方便等特点,以及优良的隔爆结构性能和较高的防护等级,适用于含有甲烷或煤尘等爆炸性气体环境、有爆炸危险的矿井下采掘面及巷道等场所与水泵配套使用。电泵采用O形橡胶密封圈作为静密封,结构性能好,采用橡胶硫化曲线控制技术保障了O型圈耐潮防老化的质量及密封性能。动密封采用两套机械密封,并有油室隔离保护,有效地为转动摩擦副提供润滑,形成流体膜润滑保护,同时释放在运动过程中积聚的热量,从而延长了机械密封的使用寿命,确保了密封性能。电泵的流体部件材质采用耐磨合金铸铁,水泵部分采用流体机械设计及平衡技术,有效的延长了电泵的使用寿命。用途含有甲烷或煤尘爆炸危险的煤矿井下采掘工作面排水,煤矿立井、斜井施工排水,矿井无水仓井底主排水,主井井底散煤仓自动排水,老塘、无人区涌水自动排水,煤矿井下含有煤尘、泥沙等较小固体颗粒的地下水排放,清水仓排水,救灾抢险排水,城市环境系统中污水排放处理使用条件输送介质温度应不超过40℃,含固体颗粒的介质、其体积浓度一般不超过2%,输送介质pH值在4~10范围内,工作环境温度0~40℃,水泵潜入水深值不超过5m,介质中固体最大粒直径不大于水泵流道过流断面最小尺寸的50%基本参数

    型号

    流量 m3/h

    杨程 m

    功率 kW

    电压 V

    电流 A

    额定 转速 r/min

    电泵 效率 %

    通过颗粒最大直径 mm

    15-15-2.2

    15

    15

    2.2

    380或660或1140

    5.12或2.98

    3000

    33.3

    10

    25-10-2.2

    25

    10

    34.5

     

    手机:18764769169 电话: 

     

    传真:  QQ:598298090

     

    网站:http://www.jnzhuoxin.com

    该公司产品分类: 电机车 电机车配件 电泵风泵 凿岩机械

    CKB200系列CKB型单向楔块超越离合器

     

    CKB型(B200型)单向楔块超越离合器

     

    特性及应用

    B200型号为无内环和轴承支撑的楔块式单向离合器,使用时需配合轴承安装以承受轴向和径向负载,使用者亦需要提拱润滑油脂供应及外部油封。

    外环与机壁用键槽方式安装,轴直接安装在离合器内,所以用于离合器安装的轴在磨削后需要硬化处理到HRC58~62,轴的锥度每50mm不应超过0.01mm,适用于极限转速:1000~2400r/min公称转矩为60~1250N.m。常用于包装机械、冶金机械、矿山机械和石油机械、化工机械、水泥机械、电站等机械传动。

     

                  

    CKB无内环的单向楔块型超越离合器基本参数和主要尺寸        长度单位:mm

     

    安装参考范例(Mounting e×ample)

    KDLU涡街流量计

    KDLU涡街流量计由仪华测控生产,质量可靠,售后有保障。联系人:吴先生;联系电话:传真,QQ908805187本文来源<p><strong><a href="http://www.0523yh.com">压力变送器</a></strong></p>,http://www.yhck88.com/,<p><strong><a href="http://www.xhyhyb.com">压力变送器,<p><strong><a href="http://www.yhlwj.com">压力变送器</a></strong></p>产品名称:KDLU涡街流量计产品价格:根据型号的不同而异型号规格:可根据用户非标定制产品类别:流量计公司简介:仪华测控仪表有限公司主要生产各种型号的压力变送器、压力传感器、物位计、料位计、磁翻板物位计、温度仪表、压力仪表、物位仪表、控制开关、电热带配件等产品。是历史三十多年的仪表仪器行业中的大型企业,被国家列入大型一档企业,并被例入中国电力企业家协会火电分会成员,化工产业定点企业。被化工部、机电部、冶金工业部推荐为质量信得过产品企业。由于仪华的诚信和努力,长期来在供求双方之间保持着很高的信誉和良好的沟通渠道。企业连续多年被有关部门评为“重合同,守信用”单位。产品说明涡街流量计是综合吸收发达国家先进技术和总结多年研究生产经验的基础上进行精心设计的产品,实现了产品智能化、标准化、系列化、通用化、生产模具化、确保产品质量的美观性。该产品具有电路先进、功耗微低、量程比宽、结构简单、阻力损失小、坚固耐用、用途广、使用寿命长、工作稳定、便于安装调试等特点。1.无可动部件,运行可靠,性能较好,使用寿命长。 2.测量被测流体,不直接接触传感器,性能稳定。  3.输出信号是与流量成正比的脉冲信号或输出4~20mA标准电流信号。 5.测量量程比大,可达1:10。而差压式只有1:3。  6.结构简单而牢固,安装方便,维修费用极少。 KDLU涡街流量计工作原理: 在测量管中垂直插入一个柱状物时,流体通过柱状物两侧就交替地产生有规则的旋涡(如图所示),这种旋涡列被称为卡门涡街。卡门涡街的释放频率与流体的流动速度及柱状物的宽度有关,可用下式表示:  f =St·v/d  f-卡门涡街的释放频率 式中 :St-系数(称为斯特罗哈数) v-流速  d-柱状物的宽度 KDLU涡街流量计参数及要求1、测量介质: 气体、液体、蒸气   2、连接方式:法兰卡装式、法兰式、插入式   3、口径规格: 法兰卡装式口径选择 25,32,50,80,10  4、法兰连接式口径选择 :100,150,200   KDLU涡街流量计流量测量范围 :正常测量流速范围(雷诺数1.5×104~4×106;气体5~50m/s; 液体0.5~7m/s)   测量精度:1.0级 1.5级   被测介质温度:常温–25℃~100℃,高温–25℃~150℃ -25℃~250℃  KDLU涡街流量计产品工作原理:  在流体中设置三角柱型旋涡发生体,则从旋涡发生体两侧交替地产生有规则的旋涡,这种旋涡称为卡门旋涡,如右图所示,旋涡列在旋涡发生体下游非对称地排列。   涡街流量计是根据卡门(Karman)涡街原理测量气体、蒸汽或液体的体积流量、标况的体积流量或质量流量的体积流量计。并可作为流量变送器应用于自动化控制系统中。 涡街流量计是应用流体振荡原理来测量流量的,流体在管道中经过涡街流量变送器时,在三角柱的旋涡发生体后上下交替产生正比于流速的两列旋涡,旋涡的释放频率与流过旋涡发生体的流体平均速度及旋涡发生体特征宽度有关,可用下式表示:f=Stv/d 式中:f为旋涡的释放频率,Hz;v为流过旋涡发生体的流体平均速度,m/s;d为旋涡发生体特征宽度,m;St为斯特罗哈数,无量纲,它的数值范围为0.14-0.27。t是雷诺数的函数,St=f(l/Re)。当雷诺数Re在102~105范围内,St值约为0.2,因此,在测量中,要尽量满足流体的雷诺数在102~105,旋涡频率f=0.2v/d。由此可知,通过测量旋涡频率就可以计算出流过旋涡发生体的流体平均速度v,再由式q=vA可以求出流量q,其中A为流体流过旋涡发生体的截面积。功能1、表体中同时集成温压补偿补偿功能,可测量流体的标准体积流量或标准质量流量2、全智能化、数字化电路设计,可自动补偿被测流体密度或标况体积计算。   3、 全新的数字滤波和修正功能使流量测量更加精准可靠。   4、 电池供电型无需外接电源既可连续工作两年以上。   5、 全新点阵汉字液晶显示,使用操作更方便。

     

     

    该公司产品分类: 涡街流量计

    ZKG-YN磁粉制动器

    ZKG-YN磁粉制动器

    NKJ41真空隔离截止阀

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    NKJ41真空隔离截止阀

    产品用途

    真空隔离截止阀适用于公称压力PN4.010.0Mpa,工作温度≤200℃的火力电站回水冷凝系统管道上,切断或接通中的介质。适用介质为:水、蒸汽等。

     

    产品结构特点

    1.产品按JB/T3595标准设计制造,满足电站设备配套使用要求。

    2.设计了真空密封结构填料室,隔离真空。

    3.阀杆经调质及表面氮化处理,有良好的抗腐蚀性,抗擦伤和耐磨性。

    4.法兰垫片采用复合材料,膨胀系数大,气密性能好,系统与大气隔离。

    5.倒密封采用不锈钢螺纹连接密封座或本体堆焊奥氏体不锈钢而成,倒密封。填料更换和维修可在不停机情况下进行,方便快捷不影响系统运行。

    主要零件的材料说明

    25WCB

    Cr5Mo

    25WCB

    Cr5Mo

    25WCB

    Cr5Mo

    2Cr13WCB

    Cr5Mo

    2Cr13

    38CrMoAL25Cr2MoV

    25304

    304

    密封环

    膨胀柔性石墨

    膨胀柔性石墨

    阀杆螺母

    ZCuA110Fe3

     

    该公司产品分类: 过滤器 水力控制阀 调节阀 安全阀 止回阀 闸阀 蝶阀 球阀 截止阀

    KVH-C100电子罗盘KVH-C100电子罗盘仪数字罗盘

    技术参数:

    主版尺寸
    4.6cm×7.1cm×2.8cm
    重量
    64g(主板)
    输入电压
    +8-18VDC 或+18-28VDC(用户可选)
    电流
    最大40mA
    铝外壳封装
    8.0cm × 7.5cm × 5.7cm
    重量
    400g(整机)
    精度
    ±0.5°(±10mils)
    可重复性
    ±0.2°(±5mils)
    分辨率
    ±0.1°(1mil)
    倾斜
    ±16°(SE-25) ±45°(SE-10不带壳)
    响应时间
    0.1 -24秒可调
    操作温度
    -40℃-+65℃
    存贮温度
    -51℃-+71℃
    冲击/振动
    符合美MIL-STD-810
    标准平均无故障时间
    大于30000小时

    该公司产品分类: 陀螺仪

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    热门仪器: 液相色谱仪 气相色谱仪 原子荧光光谱仪 可见分光光度计 液质联用仪 压力试验机 酸度计(PH计) 离心机 高速离心机 冷冻离心机 生物显微镜 金相显微镜 标准物质 生物试剂