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  • 发布时间: 2019 - 01 - 15
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    Brief Introduction of Vortex Flowmeter Products;Vortex flowmeter is mainly used to measure the flow of medium fluid in industrial pipelines, such as gas, liquid, vapor and other media.  It is characterized by small pressure loss, large measuring range and high precision, and is almost not affected by parameters such as fluid density, pressure, temperature and viscosity when measuring the volume flow under working conditions.  There are no moving mechanical parts, so the reliability is high and the maintenance amount is small.  Instrument parameters can be stable for a long time....
  • 发布时间: 2019 - 01 - 15
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    涡街流量计产品简介:涡街流量计主要用于工业管道介质流体的流量测量,如气体、液体、蒸气等多种介质。其特点是压力损失小,量程范围大,精度高,在测量工况体积流量时几乎不受流体密度、压力、温度、粘度等参数的影响。无可动机械零件,因此可靠性高,维护量小。仪表参数能长期稳定。涡街流量计采用压电应力式传感器,可靠性高,可在-20℃~+250℃的工作温度范围内工作。有模拟标准信号,也有数字脉冲信号输出,容易与计算机等数字系统配套使用,是一种比较先进、理想的测量仪器。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。  涡街流量计适用介质:条件:单相流体雷诺数ReD大于等于2×104介质:液体(水、污水、弱酸、弱碱溶液等);气体(空气、氧气、氢气、氮气、天然气等);蒸汽(饱和蒸汽和过热蒸汽) 涡街流量计主要功能:★ 温度、压力、流量同时监测;★ 温度、压力补偿一体化;★ 定量控制信号输出;★ 瞬时流量上、下限报警;★ 带RS-485通讯或HART通讯协议;★ 输出瞬时量对应的4~20mA信号或频率信号;★ 瞬时流量、累积流量、温度...
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Brief Introduction of Vortex Flowmeter Products;


Vortex flowmeter is mainly used to measure the flow of medium fluid in industrial pipelines, such as gas, liquid, vapor and other media.  It is characterized by small pressure loss, large measuring range and high precision, and is almost not affected by parameters such as fluid density, pressure, temperature and viscosity when measuring the volume flow under working conditions.  There are no moving mechanical parts, so the reliability is high and the maintenance amount is small.  Instrument parameters can be stable for a long time.


Vortex flowmeter adopts piezoelectric stress sensor with high reliability and can work in the working temperature range of-20℃ to+250℃.  It has analog standard signal and digital pulse signal output, and is easy to be used with digital systems such as computers. It is an advanced and ideal measuring instrument.


Vortex street flowmeter is a product carefully designed on the basis of comprehensive absorption of advanced technology from developed countries and summarization of years of research and production experience. It realizes intellectualization, standardization, serialization, generalization, mold production and ensures the beauty of product quality.  The product has the characteristics of advanced circuit, low power consumption, wide range ratio, simple structure, small resistance loss, firmness and durability, wide application range, long service life, stable work, convenient installation and debugging, etc.






Suitable media for vortex flowmeter:


Condition: Reynolds number ReD of single-phase fluid is greater than or equal to 2×104

Medium: liquid (water, sewage, weak acid, weak alkali solution, etc.);  Gas (air, oxygen, hydrogen, nitrogen, natural gas, etc.);  Steam (saturated steam and superheated steam)




Main Functions of Vortex Flowmeter:


★ Monitoring temperature, pressure and flow simultaneously;

★ Integration of temperature and pressure compensation;

★ Quantitative control signal output;

★ Alarm for the upper and lower limits of instantaneous flow;

★ With RS-485 communication or HART communication protocol;

★ Output 4 ~ 20mA signal or frequency signal corresponding to instantaneous quantity;

★ Instantaneous flow rate, cumulative flow rate, temperature value and pressure value are displayed on the same screen.

Technical specifications of vortex flowmeter:


Sensor

  测量原­理

  卡门涡街

  探头类型

  压电晶体

  公称通径

  DN20...2000(3/8…­80')

  连接方式

  法兰连接、法兰卡装连接、法兰固定插入式

  材    质

  探头:316不锈钢

  旋涡发生体:304不锈钢(标准)、316不锈钢

  表体:304不锈钢(标准)、316不锈钢

  法兰:碳钢(标准)、304不锈钢、316不锈钢

  测量介质

  液体、气体、蒸汽

  测量精度

  ±1.0%、±1.5%、±2.0%

  重复性

  ±0.3%

 介质温度

  小于350℃

  压力等级

  DN20~DN50:PN40;DN50~DN100:PN25;DN25~DN200:PN16;   DN200~DN600:PN10。

  测量范围

  液体:0.3~10m/s          气体:3~50m/s                蒸汽:3~50m/s

 

转换器

 

  类型

  PTG10模拟型:无显示,只带频率输出。

  PTG20智能型:具备以下所有功能

  显示

  显示屏:8位LCD带背光液晶显示

  显示内容:累积流量、瞬时流量、瞬时流量百分比、

                      压力值、温度值、电池量(电池供电型)

  瞬时流量单位:m3/h、kg/h、t/h、

  累积流量单位:m3、kg、t

  电源

  电压范围:直流(20~24)VDC或电池

  功率:小于2W

  模拟量输出

  二线制或三线制4~20mA(负载0~500KΩ)

  频率输出

  输出范围:1~2000HZ

  电气隔离:变压器隔离,隔离电压:>1000VDC

  输出驱动:晶体管输出,最高承受电压36VDC,最大负载250mA

  报警输出

  报警输出点:瞬时流量上、下限报警,累积流量定量点报警

  电气隔离:变压器隔离,隔离电压:>1000VDC

  输出驱动:继电器输出,最高承受电压36VDC,最大负载250mA

  通    讯

  Modbus(RS-485或RS-232),HART

  补偿类型

  气体温度或压力补偿;气体压力补偿;气体温度补偿;

  饱和蒸汽压力补偿;饱和蒸汽温度补偿;过热蒸汽温度压力补偿。

  防护等级

  标准:IP67

  可选:IP68(分体式可选)

  防爆等级

  标准:无防爆

  可选:隔爆(ExdⅡCT4)、本安防爆(ExiaⅡCT6)

  电气接口

  2×M20×1.5

  工作环境

  环境温度:-20℃~+60℃

 

  相对湿度:5%~90%

 

 


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