渦街流量計是基于卡門渦街原理而研制成功的一種具有新型流量計。自七十年代以來得到了迅速發(fā)展,據有關資料顯示,現在日本、歐美等發(fā)達國家使用渦街流量計的比例大幅度上升,己廣泛應用于各個領域,將在未來流量儀表中占主導地位,由于它具有其它流量計不可兼得的優(yōu)點,是孔板流量計最理想的替代產品。
主要技術指標
1.無可動部件,運行可靠,性能較好,使用壽命長。
2.測量被測流體,不直接接觸傳感器,性能穩(wěn)定。
3.輸出信號是與流量成正比的脈沖信號或輸出4~20mA標準電流信號。
4.壓力損失較少,故比差壓流量計具有節(jié)能特點。
5.測量量程比大,可達1:10。而差壓式只有1:3。
6.結構簡單而牢固,安裝方便,維修費用極少。
本系列本安防爆型產品經國家級儀器儀表防爆安全監(jiān)督檢驗站(NEPSI)檢驗認可,符合國家標準GB3896.1/4-83的規(guī)定,其防爆標志為ExibⅡCT1-6,防爆合格證為CXB00285。本產品與關聯設備-安全柵配合使用構成本安全防爆系統后,可應用于相應爆炸性危險場所。用戶在現場安裝使用,須注意下列事項:
產品外殼設有接地端子,用戶在使用產品時,須可靠接地;
本安型渦街流量傳感器必須與經防爆檢驗機構認定的安全柵配接才能構成本安防爆系統;
傳感器與安全柵本安端之間的連接電纜為三芯屏蔽電纜(電纜必須有絕緣護套)芯線截面0.5mm2。其屏蔽層在安全場所單端接地,其電纜布線盡可能排除電磁干擾的影響并使電纜分布參數控制在0.05F之內;
選型
內徑 (mm) | 0.7MPa | 0.8Mpa | 0.9MPa | 1.0MPa | 1.1MPa | 1.2MPa |
25 | 28-290 kg/h | 30-320 kg/h | 32-360 kg/h | 33-390 kg/h | 34-425 kg/h | 36-460 kg/h |
32 | 47-470 kg/h | 49-530 kg/h | 52-585 kg/h | 54-640 kg/h | 56-700 kg/h | 59-750 kg/h |
40 | 73-740 kg/h | 77-830 kg/h | 81-910 kg/h | 85-1000 kg/h | 88-1090 kg/h | 92-1170 kg/h |
50 | 0.110-1.160 | 0.120-1.290 | 0.130-1.430 | 0.130-1.560 | 0.140-1.700 | 0.140-1.84 |
65 | 0.190-1.950 | 0.200-2.180 | 0.210-2.410 | 0.220-2.640 | 0.230-2.870 | 0.240-3.100 |
80 | 0.290-2.960 | 0.310-3.300 | 0.320-3.650 | 0.640-4.000 | 0.350-4.350 | 0.370-4.700 |
100 | 0.460-4.620 | 0.480-5.160 | 0.510-5.710 | 0.530-6.250 | 0.550-6.800 | 0.570-7.340 |
125 | 0.710-7.220 | 0.750-8.060 | 0.790-8.920 | 0.830-9.770 | 0.860-10.60 | 0.900-11.50 |
150 | 1.020-10.40 | 1.080-11.60 | 1.140-12.80 | 1.190-14.10 | 1.240-15.30 | 1.390-16.50 |
200 | 1.820-18.50 | 1.920-20.60 | 2.020-22.80 | 2.120-25.00 | 2.200-27.20 | 2.290-39.40 |
250 | 2.840-28.90 | 3.010-32.30 | 3.160-35.70 | 3.130-39.10 | 3.440-42.50 | 3.580-45.90 |
300 | 4.100-41.60 | 4.330-46.40 | 4.550-51.40 | 4.770-56.30 | 4.950-61.20 | 5.160-66.10 |
350 | 5.570-56.60 | 5.900-63.20 | 6.200-70.00 | 6.490-76.60 | 6.740-83.30 | 7.020-89.90 |
400 | 7.280-74.00 | 7.700-82.60 | 8.100-91.40 | 8.480-100.0 | 8.800-108.8 | 9.170-117.4 |
450 | 9.210-93.60 | 9.740-104.5 | 10.20-115.6 | 10.70-126.6 | 11.10-137.7 | 11.60-148.6 |
500 | 11.40-115.5 | 12.00-129.0 | 12.70-142.8 | 13.30-156.3 | 13.80-170.0 | 14.30-183.5 |
600 | 16.40-166.3 | 17.30-185.8 | 18.20-205.6 | 19.10-225.0 | 19.80-244.8 | 20.60-264.2 |
700 | 22.30-226.4 | 23.60-252.8 | 24.80-280.0 | 26.00-306.3 | 27.00-333.2 | 28.10-359.7 |
800 | 29.10-295.7 | 30.80-330.2 | 32.40-365.4 | 33.90-400.0 | 35.20-435.2 | 36.70-469.8 |
900 | 36.90-374.2 | 39.00-418.0 | 41.00-462.5 | 42.90-506.3 | 44.60-550.8 | 46.40-594.5 |
1000 | 45.50-462.0 | 48.10-516.0 | 50.60-571.0 | 53.00-625.0 | 55.00-680.0 | 57.30-734.0 |
1200 | 65.50-655.3 | 69.30-743.0 | 72.90-822.2 | 76.30-900.0 | 79.20-979.2 | 82.50-1057 |
測量氣體(工作狀態(tài))體積流量的選型
內徑 (mm) | 0.1MPa | 0.2MPa | 0.3MPa | 0.4MPa | 0.5MPa | 0.6MPa |
25 | 15-80kg/h | 18-115kg/h | 20-150kg/h | 23-185kg/h | 25-220kg/h | 27-255kg/h |
32 | 24-130kg/h | 30-190kg/h | 34-245kg/h | 37-300kg/h | 41-360kg/h | 44-415kg/h |
40 | 38-200kg/h | 46-295kg/h | 52-385kg/h | 58-475kg/h | 64-560kg/h | 68-650kg/h |
50 | 59-315kg/h | 72-460kg/h | 82-600kg/h | 91-740kg/h | 0.100-0.880 | 0.110-1.020 |
65 | 0.100-0.530 | 0.12-0.775 | 0.138-1.010 | 0.154-1.250 | 0.170-1.480 | 0.180-1.720 |
80 | 0.152-0.800 | 0.183-1.170 | 0.210-1.550 | 0.233-1.895 | 0.260-2.200 | 0.270-2.600 |
100 | 0.237-1.255 | 0.286-1.850 | 0.328-2.400 | 0.364-2.960 | 0.400-3.500 | 0.430-4.100 |
125 | 0.370-1.960 | 0.448-2.860 | 0.512-3.750 | 0.569-4.650 | 0.630-5.470 | 0.670-6.360 |
150 | 0.533-1.960 | 0.645-4.120 | 0.738-5.400 | 0.819-6.660 | 0.900-7.880 | 0.960-9.160 |
200 | 0.948-5.010 | 1.150-7.130 | 1.310-9.600 | 1.460-11.80 | 1.600-14.00 | 1.710-16.30 |
250 | 1.480-7.830 | 1.790-11.40 | 2.050-15.00 | 2.280-18.50 | 2.500-21.90 | 2.670-25.40 |
300 | 2.130-11.30 | 2.580-16.50 | 2.950-21.60 | 3.280-26.60 | 3.600-31.50 | 3.840-36.60 |
350 | 2.900-15.35 | 3.510-22.40 | 4.020-29.40 | 4.460-36.30 | 4.900-42.90 | 5.230-50.00 |
400 | 3.790-20.00 | 4.580-29.30 | 5.250-38.40 | 5.830-47.40 | 6.400-56.00 | 6.830-65.10 |
450 | 4.800-25.40 | 5.800-37.10 | 6.640-48.60 | 7.370-60.00 | 9.100-70.90 | 8.650-82.40 |
500 | 5.920-31.30 | 7.160-45.80 | 8.200-60.00 | 9.100-74.00 | 10.00-87.50 | 10.70-101.8 |
600 | 8.530-45.10 | 10.30-65.90 | 11.80-86.40 | 13.10-106.6 | 14.40-126.0 | 15.40-146.5 |
700 | 11.60-61.40 | 14.00-90.00 | 16.10-117.6 | 17.80-145.1 | 19.60-171.5 | 20.90-200.0 |
800 | 15.20-80.20 | 18.30-117.2 | 21.00-153.6 | 23.30-190.0 | 25.60-224.0 | 27.30-260.5 |
900 | 19.20-101.5 | 23.20-148.4 | 26.60-194.4 | 29.50-240.0 | 32.40-283.5 | 34.60-330.0 |
1000 | 23.70-125.3 | 28.60-183.2 | 32.80-240.0 | 36.40-296.0 | 40.00-350.0 | 42.70-407.0 |
1200 | 34.10-180.5 | 41.30-263.8 | 47.20-345.6 | 52.40-426.3 | 57.60-504.0 | 61.50-586.1 |