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插入式涡街流量计

插入式涡街分简易式与球阀式两种 

                         一、基本参数 

1.1 测量介质:      液体、气体、蒸汽(传感器与介质接触部分的材料为1Cr18Ni9Ti不锈钢,可适用于多种腐蚀性介质)1.2  规格:DN300~DN15001.3  准确度:    2.5级(插入式)1.4  量程:1:6    1:8    1:101.5流量测量范围:     液体:0.4~7m/s     气体:5~60m/s     蒸汽:5~70m/s1.6雷诺数测量范围:     正常雷诺数(Re)范围:2×104~7×106      扩展雷诺数(Re)范围:1×104~7×1061.7阻力系数:     Cd≤2.41.8介质压力     ≤2.5Mpa1.9介质温度 :-40~+160℃                    -40~+280℃                    -40~+350℃1.10允许振动加速度:≤0.2g1.11输出信号:       低电平≤1V,高电平≥6V,频率范围2~3000Hz1.12供电电源:      24VDC≤20mA;12VDC≤10 mA                                         二、技术要求2.1   工作条件:传感器可在3.2条件下正常连续工作2.2   环境条件2.2.1环境温度:-40~+55℃(非防爆场所)2.2.2环境湿度:≤85%(相对湿度)2.2.3大气压力:86~106Kpa2.3安装指南:a)传感器安装在管道上的位置一定要选振动小的地方,振动加速度不能大于0.2g,如大于需要采取减震措施。b)传感器的上游侧和下游侧必须有足够的直管段见示意图3。 插入式涡街流量计(图1)                               图3                   三、基本结构                   插入式涡街流量计(图2)                        图8插入式涡街介质工况测量范围(仅供参考)                         表5

口径(mm)水(m3/h)空气(m3/h)蒸汽(m3/h)
400180-27002700-270003200-32000
500280-42004240-424004950-49500
600410-61006100-610007100-71000
700580-73007800-780009300-93000
800720-1080010850-10850012660-126600
900970-1200013000-13000015500-155000
10001130-1690017000-17000020000-200000
11001450-1800019000-19000023000-230000
12001630-2440024400-24400028500-285000
13002020-2530027000-27000032000-320000
14002350-2950031000-31000037200-372000
15002550-3800038200-38200044500-445000
 过热蒸汽相对于压力和温度的密度 (仅供参考)                    表6

140℃180220260300340380420460
0.150.780.710.650.60.560.520.490.460.44
0.21.050.950.870.80.750.70.650.620.58
0.251.321.191.0910.930.870.820.770.73
0.31.591.431.311.211.121.050.980.930.87
0.361.921.731.581.451.351.261.181.111.05
0.4
1.931.751.621.51.41.311.231.16
0.5
2.422.21.991.881.721.641.541.46
0.6
2.932.662.442.262.11.971.851.75
0.7
3.443.112.862.642.462.32.162.04
0.8
3.963.583.273.022.822.632.482.34
0.9
4.54.043.693.413.172.982.792.63
1
5.044.524.123.83.533.53.12.93
1.4

6.465.855.374.984.654.374.05
1.8

8.517.6476.466.025.645.31
2

9.588.567.817.216.716.285.91
2.4


10.459.488.728.17.577.12
2.8


12.4111.1910.269.518.888.34
3.2


14.4612.9411.8310.9410.29.57
3.6


16.6114.7613.4312.3911.5410.91
标准状态下气体密度(kg/m3)  (仅供参考)                         表7
气体名称空气氢气氧气氮气氯气氨气半水煤气
0℃,0.13MPaρN1.2930.08891.431.2513.2140.770.836
气体名称氩气乙炔甲烷乙烷丙烷丁烷焦炉煤气
0℃,0.13MPaρN1.791.0170.7171.3572.0052.7030.4849
气体名称乙烯丙烯天然气煤气一氧化碳二氧化碳
0℃,0.13MPaρN1.2641.9140.8280.8021.251.977