產(chǎn)品介紹：
HF系列 現(xiàn)場指示流量計是采用＊＊設(shè)計的經(jīng)濟實用型流量計，它帶有邊緣鋒利的浮動孔板，采用變截面積的測量原理，能達到2.5%的精度。這種設(shè)計可以在粘度到500ssu都能保持精度。所有部件都密封在金屬管內(nèi)，無需維護。流體推力推動彈簧，孔板和環(huán)狀磁塊，帶動金屬管外護罩內(nèi)的磁環(huán)來指示流量。
HF系列用于單向流動的流量監(jiān)測，推薦用于系統(tǒng)中的流體雜質(zhì)小于74微米，或采用了200孔/英寸的濾篩過濾。建議去除磁性雜質(zhì)。它沒有前后直管段要求，可任意方向安裝包括：水平，垂直，甚至從上到下流動。
Service: Compatible gases or liquids.
Wetted Materials: HFA: Aluminum casing, Buna-N seals, PTFE coated Alnico magnet, SS disk; HFB: Brass casing, Buna-N seals, PTFE coated Alnico magnet, SS disk; HFS: 303 SS casing, FKM seals with PTFE backup, PTFE coated Alnico magnet, SS disk.
Maximum Viscosity: 500 SSU.
Temperature Limits: 240°F (116°C).
Pressure Limits: HFA, HFB, HFL and HFH models: 600 psig (41 bar) for air and gas,
3500 psig (241 bar) for liquids;
HFS model: 1000 psig (70 bar) for air and gas, 6000 psig (413 bar)
for liquids.
Accuracy: ±4% FS over entire range; ±2.5% over center third of the measuring range.
Repeatability: ±1% of FS.
Shipping Weight: 1/4" to 1/2" female NPT models; 2 lb (0.9 kg);
3/4" to 1" female NPT models: 3.5 lb (1.59 kg);
1-1/2" female NPT models: 11 lb (5 kg);
2" female NPT models: 13.5 lb (6.12 kg).
