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详细内容
仪表选型
1.量程范围确认
一般工业用 电磁流量计 被测介质流速以2～4m/s为宜，在特殊情况下，流速应不小于0.2m/s，应不大于8m/s。若介质中含有固体颗粒，常用流速应小于3m/s，防止衬里和电极的过分磨擦；对于粘滞流体，流速可选择大于2m/s，较大的流速有助于自动消除电极上附着的粘滞物的作用，有利于提高测量精度。在量程Q已确定的条件下，即可根据上述流速V的范围决定流量计口径D的大小，其值由下式计算：
Q=πD2V/4
Q:流量（㎡/h） D:管道内径 V：流速（m/h）
电磁流量计的量程Q应大于预计的流量值，而正常的流量值以稍大于流量计满量程刻度的50%为宜。
2.选型表
| 型号 | 通经（mm） | 流量范围（m3/h） | 口径（mm） | 口径（mm） | 流量范围（m3/h） | ||
| RT-LDE15 | DN15 | 0.32-6.36 | RT-LDE/LCD450 | DN450 | 286.13-5722.65 | ||
| RT-LDE20 | DN20 | 0.57-11.30 | RT-LDE/LCD500 | DN500 | 353.25-7065.00 | ||
| RT-LDE25 | DN25 | 0.88-17.66 | RT-LDE/LCD600 | DN600 | 508.68-10173.60 | ||
| RT-LDE32 | DN32 | 1.45-28.94 | RT-LDE/LCD700 | DN700 | 692.37-13847.40 | ||
| RT-LDE40 | DN40 | 2.26-45.22 | RT-LDE/LCD800 | DN800 | 904.32-18086.40 | ||
| RT-LDE50 | DN50 | 3.53-70.65 | RT-LDE/LCD900 | DN900 | 1144.53-22890.60 | ||
| RT-LDE65 | DN65 | 5.97-119.40 | RT-LDE/LCD1000 | DN1000 | 1413.00-28260.00 | ||
| RT-LDE80 | DN80 | 9.04-180.86 | RT-LDE/LCD1200 | DN1200 | 2034.72-40694.40 | ||
| RT-LDE100 | DN100 | 14.13-282.60 | RT-LDE/LCD1400 | DN1400 | 2769.48-55389.60 | ||
| RT-LDE125 | DN125 | 22.08-441.56 | RT-LDE/LCD1600 | DN1600 | 3617.28-72345.60 | ||
| RT-LDE150 | DN150 | 31.79-635.85 | RT-LDE/LCD1800 | DN1800 | 4578.12-91562.40 | ||
| RT-LDE/LCD200 | DN200 | 56.52-1130.40 | RT-LDE/LCD2000 | DN2000 | 5652.00-113040.00 | ||
| RT-LDE/LCD250 | DN250 | 88.31-1766.25 | RT-LDE/LCD2200 | DN2200 | 6838.92-136778.40 | ||
| RT-LDE/LCD300 | DN300 | 127.17-2543.40 | RT-LDE/LCD2400 | DN2400 | 8138.88-162777.60 | ||
| RT-LDE/LCD350 | DN350 | 173.09-3461.85 | RT-LDE/LCD2600 | DN2600 | 9551.88-191037.60 | ||
| RT-LDE/LCD400 | DN400 | 226.08-4521.60 | | | | ||
| | | 代号 | 电极材料 | ||||
| K1 | 316L | ||||||
| K2 | HB | ||||||
| K3 | HC | ||||||
| K4 | 钛 | ||||||
| K5 | 钽 | ||||||
| K6 | 铂合金 | ||||||
| K7 | 不锈钢涂覆碳化钨 | ||||||
| | 代号 | 内衬材料 | |||||
| C1 | 聚四氟乙烯F4 | ||||||
| C2 | 聚全氟乙丙烯F46 | ||||||
| C3 | 聚氟合乙烯FS | ||||||
| 聚录丁橡胶 | |||||||
| C5 | 聚氨脂橡胶 | ||||||
| | 代号 | 功能 | |||||
| E1 | 0.3级 | ||||||
| E2 | 0.5级 | ||||||
| E3 | 1级 | ||||||
| F1 | 4－20Madc,负载≤750Ω | ||||||
| F2 | 0-3khz,5v有源，可变脉宽，输出频率 | ||||||
| F3 | RS485接口 | ||||||
| T1 | 常温型 | ||||||
| T2 | 高温型 | ||||||
| T3 | 超高温型 | ||||||
| P1 | 0.6MPa | ||||||
| P2 | 1.0MPa | ||||||
| P3 | 1.6MPa | ||||||
| P4 | 4.0MPa | ||||||
| D1 | 220VAC±10％ | ||||||
| D2 | 24VDC±10％ | ||||||
| J1 | 一体型结构 | ||||||
| J2 | 分体型结构 | ||||||
| J3 | 防爆一体型结构 | ||||||
