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TKWL-2100系列音叉物位开关

TKWL-2100系列音叉物位开关

TKWL-2100 series tuning fork material level switch

产品简介

  TKWL2100系列音叉物位开关是通过电晶体的谐振来引起其振动的,当受到物料阻尼作用时,振幅急剧降低且频率和相位发Th明显变化,这些变化会被内部电子电路检测到,经过处理后,转换成开关信号输出。该产品可以对料罐的高低位进行监测、控制和报警,适用于各种液体、粉末、颗粒状固体。它实用简单、运行可靠、适应性强基本上是面维护的、音叉和输出均有工作状态,均用发光二极管指 示,可依据习惯调整状态指示,并配有三种输入方式(直流24V、交流110V和交流220V)和多种输出方式(直流电流输出型、继电器接点输出型、直流电压输出型)。所有类型均有高或低故障报警模拟和可选择的仪表开关灵敏度。

Brief  introduction  ofproducts

TkWL2100 series tuning fork material level switch producesvibration through resonance of transistor. When affected by material damping,the vibration smplitude decreases dramatically and the frequency and phasechange obviously, which can be examined by internal electric circuit andconvert into swith signal for outputting after treatment. This product canmonitor, control and report the high-low level of the material tank and isapplicable for various kinds of liquids, powders and particle solid. It issimple in use, reliable in operation and strong in adaptability, which isbasically surface maintenance and both the tuning fork and output are withworking state and both adopt LED indicator, can adjust the status indicatorbased on habits and equipped with three kinds of output methods (DC24V, AC110Vand AC220V) and various output methods (DC current output type, relay contactpoint output type and DC voltage output type). All types have high or lowanalog fault alarm and optional instrument swith sensitivity.

产品特点

◆运行真正免受流动、湍流气泡、泡沫、振动、固体含 量、涂覆、液体特性以及产品变化的影响

◆不需要标定而且所需要的安装工序最少

◆极性不敏感而且具有短路保护功能

◆无活动零件或缝隙真正实现免维护

◆发光二极管指示,可依据习惯调整状态指示

◆“快速滴落”的音叉设计对于粘性液体具有更快的响应时间

◆卫Th连接件

Product  characteristics

Operation is notaffected by flow, turbulence,air bubble, foam, vibration,solid content, coating, liquid propertyas well as changeof products in a genuineway.

No need calibration and require the least intallationprocess

Polarity insensitive and with short circuit protectionfunction

No  moving parts or  gap, realize maintenance free in a genuine

way

LED indicator and the status indicator can be adjustedbased on

habits

“Rapid drip” tuning fork design has more rapid responsetime  for

viscous liquid.

Sanitary connecting piece

测量原理

  本产品是一种采用音叉原理设计的液点液位开关。使 用压电晶体以音叉的固有频率对音叉进行振动。对于这种 频率的变化,可进行连续监控。当产品用于低报警用途时,容器内的液体向下排放流经音叉,引起固有频率的变化,这一变化被电子元件检测,从而切换输出状态。当用于高报警用途时,容器内的液体上升并与音叉接触,又可切换输出状态。

Principle  of  measurement

  This product is liquid level switch adopting tuning fork principle design and adopts piezoelectric crystal to make vibration for tuning fork with the fixed frequency of tuning fork. It can make continuous monitoring for this kind of frequency change. When the product is used for low alarm, the liquid in the container will flow downward through tuning fork and cuase the change of fixed frequency. Thischange is examined by electronic components and then swithches outputstatus.Whenappliedtohighalarm,theliquidinthecontainer will rise and contact with tuning fork and also switches output status.

技术参数

介质温度范围:-20~80

环境温度:-20~60

环境湿度:95%RH

测介质:液体、粉末或颗粒状固体

被测介质密度:固体≥0.1g/cm液体≥0.7g/cm

被测固体颗粒尺寸:10mm

最大液体粘度:1000mm/S

被测介质安息角:200

压力范围:1MPa

壳体材料:压铸铝合金

※ 叉体材料:1Cr18Ni9Ti

※ 外壳防护等级:IP65

※连接方式:G1法兰(用户选定)

※ 电气参数:

    1 .电电压:DC24V;AC220V 50HZ

    2 .输出信号:继电器输出:5A 220V AC 3A   24V DC

    3.电源功耗:≤2W

叉振动频率:300±50HZ

※ 环境振动等级:V.L.4加速度不于1g

※开关信号动作时间:1~60S

Technical   parameters

Temperature rangeof medium: -20℃~80℃

※Environmentaltemperature: -20℃~60℃

※Environmentalhumidity: ≤95%RH

※Examined medium:liquid, powder or particle solid

※Density of examined medium: solid ≥0.1g/cm;

※Liquid≥0.7g/cm;

※Size of examinedsolid particle: ≤10mm

※Max liquid viscosity: <1000mm/S

※Angle of repose of examined medium: ≥200

※Pressure range: ≤1MPa

※Material of shell: die-casting aluminium

※Material of fork: 1Cr18Ni9Ti

※Shell protection class: Ip65

※Connection method: G1 screw thread

※Flange (selected by user )

※Electrical parameters:

    1.Power supply:DC24V;AC220V50HZ

    2.Signal output: relay output: 5A 220V AC 3A   24VDC

    3.Power consumption:≤2W

※Vibration frequency of tuning fork: 300±50HZ

※Environmentalvibration class: V.L.4, acceleration no bigger than 1g

※Action time of switch signal: 1~60S


安装方法


1.仪表一般为叉端向下垂直安装、水平安装或叉端向下倾斜安装(物料粘附性强时,建议


采用叉端向下垂直安装)。


2.仪表不允许仰装方式,即叉端向上的安装方式。


3.对物料中混有块状或坚硬颗粒时建议采用垂直或倾斜安 装方式。


4.在安装到设备上之前,建议用少量的介质样品检测校准灵敏度。例如:将仪表浸入一个安


装有介质的容器内检测 开关的可靠性。 

   

5.实际安装时一般又分顶部安装(对介质进行高位监测)、侧壁安装(对介质进行高位或低


位监测)、管道安 装(对料泵进行空流监测)。如下图所示:


Installation Methods:

1. There are vertical installation with fork end downward, horizontal installation and tilting installation with fork end downward for meter. (it is suggested to chose verticalinstallation with fork end downward when material is with strongadhesion)

2.Upturnedinstallation that is installation method with fork end upward is not allowed.

3.When the material is mixed with lump or hard particle, it is suggested to choose vertical or tiltinginstallationmethods.

4.Before installing onto device, it is suggested to use a smallamount of medium sampleto examine the sensitivity calibration. For example,immerse the meter into a continer installed with medium to examinethe reliability ofswitch.

5. During practical installation, there are top installation (making high monitoring for medium), side wall installation (making high or low monitoring for medium) and pipe installation (making air flow monitoring for material pump).As indicated in the following picture:

注意事项

1.避免因物料粘结,阻止齿叉的振动。

2.结疤场合下,齿叉与罐壁之间应留足空间。

3.用于液位监测的仪表,检测点按所需监视或控制 的高度确定。

4.对于低粘度液体,音叉头能够自由的二和过程介质分开,就可以按上图所示的任何位置安装。 

5.对于高粘度液体,音叉头不能够自由的和过程介质分开,建议只能叉端向下垂直安装。

6.用于料位监测的仪表,对于立式圆筒容器或与之近似的容器,安装位置不仅取决于需要监视或控制 的料位高度,同时还需考虑物料的安息角和进料位 置。水平安装时,叉端宜处在距离容器内壁三分之 一容器半径处;两叉股应在同一水平面内。垂直安 装在容器顶部时,安装中心与容器内壁间的距离应 选在容器半径的三分之一处。仪表安装位置应尽量 避免物料流的直接冲击或飞溅,以免引起错误动作 及磨损,如果无法避免物料的冲击或飞溅,可以在 仪表安装位置的上方安装防护檐,防护檐的有效宽 度应大于叉端宽度,其长度应大于仪表实际渗入料仓的尺寸


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