夾持式渦街流量計
簡要描述：RETZ進口夾持式渦街流量計有管道式、插入式流量傳感器形式，無可動部件，穩定可靠，安裝方式靈活方便，根據現場工藝管道不通，可水平，垂直和不同角度傾斜安裝
品牌：RETZ- 工況條件：流體測控
- 溫度/壓力：P-T: 160bar@350℃
- 更新時間：2023/04/04
進口夾持式渦街流量計 原理及用途Principle and purpose
渦街流量計是根據卡門(Karman)渦街原理研究生產的測量氣體、蒸汽或液體的體積流量、標況的體積流量或質量流量的體積流量計。主要用于工業管道介質流體的流量測量，如氣體、液體、蒸汽等多種介質，也可測量含有微小顆粒、雜質的渾濁液體，廣泛應用于石油、化工、制藥、造紙、冶金、電力、環保、食品等行業。
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.
傳感器輸出為脈沖頻率，其頻率與被測流體的實際流量呈線性，零點無漂移，性能穩定，結構形式多樣 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
技術參數 Technical parameter
測量介質 | 液體、氣體、蒸汽(飽和蒸汽、過熱蒸汽) |
公稱通徑 | DN15-DN300 |
精度等級 | 氣體無補償型：DN15-DN25-1.5級，DN32-DN200--1.0級， |
流速范圍
| 液體：(0～0.38)m/s 氣體：(3～65)m/s 蒸汽： (3～70) m/s" |
量程比 | 氣體密度1.2kg/m3時，量程比8:1; |
管道壓力 | 低壓：≤1.6Mpa、≤2.5Mpa 中壓：≤4.0Mpa、≤6.3Mpa 高壓：≤10Mpa、≤16Mpa、≤25Mpa、≤42Mpa |
儀表現場顯示（LCD） | 瞬時流量、累積流量、溫壓補償 |
介質溫度 | 防爆介質：-40℃～100℃低溫介質：-40℃～100℃中溫介質：-40℃～280℃高溫介質：-40℃～350℃。 |
工作電源 | 24VDC±5%、鋰電池3.6VDC(電池使用壽命大于2年) |
輸出信號 | 瞬時流量對應電壓頻率脈沖(低電平≤1V,高電平≥6V) |
通訊接口 | RS485、HART可選 |
表體材質 | 不銹鋼(可特殊定制) |
電氣接口 | M20*1.5內螺紋 |
主要特點 Main features
高強度壓電晶體，一體成形，耐沖擊 High strength piezoelectric crystal, integrated forming, impact resistant
兼容液體、氣體、導熱油以及蒸汽計量 Compatible with liquid, gas, thermal oil, and steam metering
音速噴嘴標定，重復性高，測量精度高 Sonic nozzle calibration with high repeatability and measurement accuracy
可自由選配溫度補償、壓力溫度，滿足更多現場使用 Free selection of temperature compensation and pressure temperature to meet more on-site use
電路板出廠前老化運行，且整表逐臺標定，更適合現場使用 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
采用消擾電路和抗振動傳感頭，具有良好的抗環境振動性能 Adopting anti-interference circuits and anti vibration sensing heads, it has good anti environmental vibration performance
流量范圍 Flow range
液體流量參考范圍 Liquid flow reference range
密度 | 500 | 600 | 700 | 800 | 900 | 1000 | 1200 | 1400 | 1600 | 1800 | 最大流量 |
口 徑 | 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 |
氣體流量參考范圍 Gas flow reference range
密度 | 0.5 | 0.8 | 1.2 | 2.4 | 3.6 | 4.8 | 6 | 7.2 | 8.4 | 9.6 | 12 | 20 | 最大流量 |
口徑 | 最小流量Qmin m3/h | ||||||||||||
15 | 6.7 | 4.8 | 3.8 | 3.6 | 3.3 | 3.1 | 2.9 | 2.6 | 2.4 | 2.1 | 1.9 | 1.7 | 32 |
20 | 10.2 | 7.4 | 6.8 | 6.8 | 5.7 | 5.5 | 5.3 | 5.1 | 4.9 | 4.7 | 4.5 | 4.2 | 57 |
25 | 17.4 | 14.0 | 10.6 | 10.6 | 10.0 | 9.5 | 9.1 | 8.5 | 8.3 | 8.1 | 7.8 | 6.4 | 88 |
32 | 22.0 | 19.8 | 17.4 | 17.4 | 15.8 | 15.2 | 14.5 | 13.6 | 13.0 | 11.9 | 11.0 | 9.9 | 188 |
40 | 50 | 35 | 27 | 27 | 25 | 24 | 23 | 23 | 22 | 21 | 20 | 17 | 294 |
50 | 81 | 53 | 42 | 42 | .38 | 36 | 34 | 32 | 30 | 28 | 25 | 21 | 459 |
65 | 111 | 92 | 72 | 72 | 65 | 60 | 53 | 51 | 49 | 46 | 42 | 28 | 776 |
80 | 164 | 135 | 109 | 109 | 90 | 86 | 82 | 78 | 72 | 61 | 53 | 37 | 1176 |
100 | 276 | 212 | 170 | 170 | 148 | 140 | 131 | 123 | 106 | 97 | 81 | 59 | 1837 |
125 | 397 | 353 | 265 | 265 | 221 | 199 | 177 | 155 | 137 | 124 | 106 | 77 | 2870 |
150 | 562 | 502 | 382 | 382 | 313 | 291 | 271 | 241 | 201 | 181 | 153 | 110 | 4133 |
200 | 920 | 751 | 678 | 678 | 581 | 533 | 484 | 436 | 388 | 339 | 266 | 206 | 7348 |
250 | 1696 | 1272 | 1060 | 1060 | 911 | 848 | 805 | 763 | 699 | 636 | 572 | 424 | 11484 |
300 | 1932 | 1700 | 1526 | 1526 | 1314 | 1198 | 1140 | 1004 | 927 | 811 | 773 | 580 | 16532 |
安裝指導 Installation instructions
1.安裝場所和環境選擇
盡量避開強電力設備、高頻變頻設備、強電源開關設備；
盡量避開高溫熱源、輻射熱源影響；室外安裝應做好遮陽防雨措施；
盡量避開振動場所和強腐蝕環境等；同時要考慮安裝維修方便；
2.合理正確的安裝位置
安裝位置盡量避免選擇振動較強的管道，否則必須采取減振措施，如加裝減震短節等；
流量計可水平、垂直、傾斜安裝。測量液體時，必須保證流體由低處向高處流動；
測量氣體時，流向不限；
測量蒸汽或者高溫氣體時，表體支柱盡量與豎直方向成45°安裝；
3.直管段要求
為了準確測量，流量計的上、下游必須留有足夠的直管段，上游不應有影響流體流速分布的部件
4.接地要求
流量計安裝時表體應可靠接地，若現場管道不具備接地條件，應單獨做一根可靠地線與儀表外殼接地端相連。
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