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品牌：RETZ瑞茨/我们一直致力于流体控制和测控领域的持续创新，始于2005……

进口涡街流量计原理及用途Principle and purpose

涡街流量计是根据卡门(Karman)涡街原理研究生产的测量气体、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。主要用于工业管道介质流体的流量测量，如气体、液体、蒸汽等多种介质，也可测量含有微小颗粒、杂质的浑浊液体，广泛应用于石油、化工、制药、造纸、冶金、电力、环保、食品等行业。

Vortex flow meter is a volume flow meter that measures the volume flow rate, standard volume flow rate, or mass flow rate of gas, steam, or liquid based on the Karman vortex flow principle. Mainly used for flow measurement of industrial pipeline medium fluids, such as gases, liquids, steam, and other media. It can also measure turbid liquids containing small particles and impurities, and is widely used in industries such as petroleum, chemical, pharmaceutical, papermaking, metallurgy, power, environmental protection, and food.

传感器输出为脉冲频率，其频率与被测流体的实际流量呈线性，零点无漂移，性能稳定，结构形式多样 The output of the sensor is a pulse frequency, which is linear with the actual flow rate of the measured fluid, with zero drift, stable performance, and diverse structural forms

进口涡街流量计主要特点 Main features

高强度压电晶体，一体成形，耐冲击 High strength piezoelectric crystal, integrated forming, impact resistant

兼容液体、气体、导热油以及蒸汽计量 Compatible with liquid, gas, thermal oil, and steam metering

音速喷嘴标定，重复性高，测量精度高 Sonic nozzle calibration with high repeatability and measurement accuracy

可自由选配温度补偿、压力温度，满足更多现场使用 Free selection of temperature compensation and pressure temperature to meet more on-site use

电路板出厂前老化运行，且整表逐台标定，更适合现场使用 The circuit board is aged and operated before leaving the factory, and the entire meter is calibrated one by one, making it more suitable for on-site use

采用消扰电路和抗振动传感头，具有良好的抗环境振动性能 Adopting anti-interference circuits and anti vibration sensing heads, it has good anti environmental vibration performance

进口涡街流量计技术参数 Technical parameter

测量介质   液体、气体、蒸汽(饱和蒸汽、过热蒸汽)

公称通径   DN15-DN300

精度等级   气体无补偿型：DN15-DN25-1.5级，DN32-DN200--1.0级，

DN250-DN300--1.5级；

液体无补偿型：DN15-DN300--1.0（0.5）级；

温压补偿型：DN25-DN300--1.5级；                  

流速范围

      液体：(0～0.38)m/s

气体：(3～65)m/s

蒸汽： (3～70) m/s"

量程比     气体密度1.2kg/m³时，量程比8:1;

液体密度1000kg/m³时，量程比8:1;

(介质密度不同时，量程比会有变化)

管道压力   低压：≤1.6Mpa、≤2.5Mpa

中压：≤4.0Mpa、≤6.3Mpa

高压：≤10Mpa、≤16Mpa、≤25Mpa、≤42Mpa

仪表现场显示（LCD）   瞬时流量、累积流量、温压补偿

介质温度   防爆介质：-40℃～100℃低温介质：-40℃～100℃中温介质：-40℃～280℃高温介质：-40℃～350℃。

工作电源   24VDC±5%、锂电池3.6VDC(电池使用寿命大于2年)

输出信号   瞬时流量对应电压频率脉冲(低电平≤1V,高电平≥6V)

瞬时流量对应4-20mA输出(负载电阻≤300Q)

通讯接口   RS485、HART可选

表体材质   不锈钢(可特殊定制)

电气接口   M20*1.5内螺纹