涡街流量计
简要描述：RETZ进口涡街流量计有管道式、插入式流量传感器形式，无可动部件，稳定可靠，安装方式灵活方便，根据现场工艺管道不通，可水平，垂直和不同角度倾斜安装
品牌：RETZ- 工况条件：流体测控
- 温度/压力：P-T: 420bar@350℃
- 更新时间：2023/04/04
进口分体式电磁流量计 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
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， |
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; |
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) |
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 |
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
流量范围 Flow range
液体流量参考范围 Liquid flow reference range
密度 | 500 | 600 | 700 | 800 | 900 | 1000 | 1200 | 1400 | 1600 | 1800 | 最大流量 |
口 径 | 最小流量Qmin m³/h | ||||||||||
15 | 0.7 | 0.5 | 0.5 | 0.4 | 0.4 | 0.4 | 0.3 | 0.3 | 0.3 | 0.3 | 3.2 |
20 | 1.3 | 1.1 | 1.1 | 1.0 | 0.9 | 0.7 | 0.7 | 0.6 | 0.6 | 0.6 | 5.7 |
25 | 1.5 | 1.4 | 1.3 | 1.2 | 1.2 | 1.1 | 1.0 | 0.9 | 0.8 | 0.8 | 8.8 |
32 | 2.0 | 1.9 | 1.8 | 1.7 | 1.7 | 1.6 | 1.5 | 1.4 | 1.3 | 1.1 | 19 |
40 | 3.8 | 3.5 | 3.3 | 3.1 | 2.8 | 2.5 | 2.4 | 2.3 | 2.2 | 2.1 | 29 |
50 | 5.2 | 4.8 | 4.3 | 4.1 | 4.0 | 3.9 | 3.3 | 3.1 | 2.9 | 2.8 | 46 |
65 | 7.8 | 7.1 | 6.9 | 6.8 | 6.7 | 6.6 | 5.5 | 4.9 | 4.6 | 4.4 | 78 |
80 | 12.2 | 11.1 | 10.6 | 10.2 | 10.1 | 9.9 | 8.8 | 8.4 | 7.7 | 6.6 | 118 |
100 | 22 | 20 | 19 | 18 | 17 | 16 | 14 | 13 | 11 | 10 | 184 |
125 | 31 | 29 | 28 | 26 | 25 | 24 | 23 | 22 | 20 | 15 | 287 |
150 | 57 | 55 | 49 | 46 | 39 | 35 | 33 | 31 | 28 | 22 | 41 |
200 | 108 | 96 | 85 | 76 | 68 | 62 | 58 | 55 | 47 | 38 | 735 |
250 | 201 | 180 | 164 | 142 | 120 | 97 | 87 | 79 | 74 | 60 | 1148 |
300 | 273 | 240 | 219 | 197 | 175 | 140 | 131 | 120 | 107 | 84 | 1653 |
气体流量参考范围 Gas flow reference range
密度 | 500 | 600 | 700 | 800 | 900 | 1000 | 1200 | 1400 | 1600 | 1800 | 最大流量 |
口 径 | 最小流量Qmin m³/h | ||||||||||
15 | 0.7 | 0.5 | 0.5 | 0.4 | 0.4 | 0.4 | 0.3 | 0.3 | 0.3 | 0.3 | 3.2 |
20 | 1.3 | 1.1 | 1.1 | 1.0 | 0.9 | 0.7 | 0.7 | 0.6 | 0.6 | 0.6 | 5.7 |
25 | 1.5 | 1.4 | 1.3 | 1.2 | 1.2 | 1.1 | 1.0 | 0.9 | 0.8 | 0.8 | 8.8 |
32 | 2.0 | 1.9 | 1.8 | 1.7 | 1.7 | 1.6 | 1.5 | 1.4 | 1.3 | 1.1 | 19 |
40 | 3.8 | 3.5 | 3.3 | 3.1 | 2.8 | 2.5 | 2.4 | 2.3 | 2.2 | 2.1 | 29 |
50 | 5.2 | 4.8 | 4.3 | 4.1 | 4.0 | 3.9 | 3.3 | 3.1 | 2.9 | 2.8 | 46 |
65 | 7.8 | 7.1 | 6.9 | 6.8 | 6.7 | 6.6 | 5.5 | 4.9 | 4.6 | 4.4 | 78 |
80 | 12.2 | 11.1 | 10.6 | 10.2 | 10.1 | 9.9 | 8.8 | 8.4 | 7.7 | 6.6 | 118 |
100 | 22 | 20 | 19 | 18 | 17 | 16 | 14 | 13 | 11 | 10 | 184 |
125 | 31 | 29 | 28 | 26 | 25 | 24 | 23 | 22 | 20 | 15 | 287 |
150 | 57 | 55 | 49 | 46 | 39 | 35 | 33 | 31 | 28 | 22 | 41 |
200 | 108 | 96 | 85 | 76 | 68 | 62 | 58 | 55 | 47 | 38 | 735 |
250 | 201 | 180 | 164 | 142 | 120 | 97 | 87 | 79 | 74 | 60 | 1148 |
300 | 273 | 240 | 219 | 197 | 175 | 140 | 131 | 120 | 107 | 84 | 1653 |
安装指导 Installation instructions
安装场所和环境选择
尽量避开强电力设备、高频变频设备、强电源开关设备；
尽量避开高温热源、辐射热源影响；室外安装应做好遮阳防雨措施；
尽量避开振动场所和强腐蚀环境等；同时要考虑安装维修方便；
2.合理正确的安装位置
安装位置尽量避免选择振动较强的管道，否则必须采取减振措施，如加装减震短节等；
流量计可水平、垂直、倾斜安装。测量液体时，必须保证流体由低处向高处流动；
测量气体时，流向不限；
测量蒸汽或者高温气体时，表体支柱尽量与竖直方向成45°安装；
3.直管段要求
为了准确测量，流量计的上、下游必须留有足够的直管段，上游不应有影响流体流速分布的部件
4.接地要求
流量计安装时表体应可靠接地，若现场管道不具备接地条件，应单独做一根可靠地线与仪表外壳接地端相连。
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