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TKWL-1500射频导纳物位计

TKWL-1500射频导纳物位计

TKWL-1500Radio Frequency Admittance Material level meter

概述

  TKWL-1500系列为通用型物位仪表,用于连续物 位测量,产品应用于工矿现场,适用于大多数应用 场合。仪表由一个电路单元一套防爆外壳和杆式或 缆式传感元件组成、传感器有很多种型号可选,仪 表可选整体或分体安装。

Summary

  TKWL-1500 series are universal material levelmeters used for continuous material level measurement, which have been widelyapplied to industrial and mining sites and also most application occasions. Themeter is composed of one circuit unit, one set of explosion- proof shell androd type or cable type sensing component; there are numerous sensor models forchoice and the meter can be installed completely or partially.

测量原理

  射频导纳是一种从电容式发展起来的、防挂料,更可靠、更准确、适用性更广的新型物位控制技术,是电容式物位计的升级。所谓射频导纳,导 纳的含义为电学中阻抗的倒数,它由电阻性成分, 电容性成分,感性成分综合而成,而射频即高频无 线电波谱,所以射频导纳可以理解为用高频无线电 波测量导纳。仪表工作时,仪表传感器与罐壁及被 测介质形成导纳值。物位变化时,导纳值相应变化。电路单元将被测导纳值转换成物位信号输出, 实现物位测量。

Meaurement   principle

 Radio frequency admittance is a new material lelvelcontrol technology, developed from capacitortype, anti-hanging material, more reliable, moreaccurate and withmore extensive applicability. For radio frequency admittance, the meaningof admittance is reciprocal ofelectrical impedance, which iscomposed of resistivecomponent, capacitive component and perceptualcomponent comprehensively, while the radiofrequency refers to high- frequencyradio wave frequency, so the radio frequencyadmittance can also be understood asusing high-frequency radio wave to measureadmittance. When meter works, metersensor and tank  wall as well as measuredmedium form admittance value.When material level changes,the admittance value will alsochange accordingly. Circuit unit convertsthe measured admittance value into material levelsignal and outputs itto realize measurement for material level.

特点

1.通用性强:可测量液位及料位,可满足不同温度,压力,介质的测量要求,并可应用于腐蚀、冲 击等恶劣场合。


2.防挂料:独特的电路设计和传感器结构,使其测量可以不受传感器挂料影响,无需定期清洁,避免 误测量。


3.免维护:测量过程无可动部件,不存在机械部件损坏问题,无需维护。 


4.抗干扰:接触式测量,抗干扰能力强,可克服蒸汽,泡沫及搅拌对测量的影响。


5.准确可靠:测量多样化,使测量更加准确,测量不受环境变化影响,稳定性高,使用寿命长。

Characteristics

1.Strong generality: can measure liquid level and material level, can meet measurement requirmentsof different temperatures, pressures and mediums and can be applied to corrosion and attack and other severesituations.

2.Anti-hangingmaterial: unique circuit design and sensor structure male the measurement not affected by hanging-material of sensor; there is no need to clean regularly and avoid errormeasurement.

3. Maintenance free: there is no moving part during measurement process, problem of parts damage does not exist and no need to maintaim.

4. Anti-interference:contact measurement, with strong interference ability, can get over the influence of steam, foam and stirring on measurement.

5. Accurate and reliable:Measurement diversification, which can make the measurement more accurate, the measurement is not affected by change of environment, make it with high stability and long usinglife.


典型应用

导电、绝缘液体-化工、油田、水及污水处理 导电、绝缘浆体-造纸、制药、水及污水处理粉沫: 灰、粉-电厂、 冶金、 水泥  颗粒: 煤、 粮食-电厂、 冶金、粮食 界面:不同两种液体-油田、化工

Classical  Application

Electric conduction, insulatingliquids-chemical, oil field, water and sewage treatment.

Electricconduction, insulating paste-paper making, pharmacy, water and sewagetreatment.

Powder: ash, powder-powerplant, metallurgy and cement .

Particles: coal, food-powerplant, metallurgy, food.

Interface: two differentliquids-oil field, chemical .

性能指标

输出:4~20mA两线制)+HART 输出方式: 物位方式或距离方式精度:0.5级

环境温度:- 40~70℃ 介质温度:- 100~260℃ 最负载:24VDC350Ω 

负载影响:0.2%(0-最大负载)响应时间:<0.5s(标准)0.5~30s(可调) 

量程:最大1500PF,最距离100m(不同传感器最大量程不同)火花防护(对传感器):内置火花防护电路 电气接口:M20×1.5

电缆:分体式电子单元与传感器之间的专用连接电缆标准5 m,最长50 m 

过程连接:NPT螺纹安装(标准) 法兰安装( 可选) 外壳防护:IP66 防爆:ExdiaIICT4

Performance  Index

Output: 4~20mA(two wire system)+HART

Output method: way of materiallevel or way of distance Accuracy: 0.5 grade

Environmental temperature:-40~70℃ Temperature of medium:- 100~260℃ Maximum loading: 24VDC350Ω

Influence of loading: 0.2% (0-the maximum load) Response tim0.5s(standard)0.5~30s(adjustable)

Measuring range: max 1500PF,max distance 100m (different sensors have different measuring distances)

Spark protection (for sensor):built-in spark protection circuit Electrical interface: M20×1.5

Cable: the standard cable for split electronic unit and sensor is 5min length, max50m.

Process connection: NPT screwthread installation (standard) Flange installation (optional)

Shell protection: Ip66Explosion proof: ExdiaIICT4


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