产品介绍：
HF系列 现场指示流量计是采用＊＊设计的经济实用型流量计，它带有边缘锋利的浮动孔板，采用变截面积的测量原理，能达到2.5%的精度。这种设计可以在粘度到500ssu都能保持精度。所有部件都密封在金属管内，无需维护。流体推力推动弹簧，孔板和环状磁块，带动金属管外护罩内的磁环来指示流量。
HF系列用于单向流动的流量监测，推荐用于系统中的流体杂质小于74微米，或采用了200孔/英寸的滤筛过滤。建议去除磁性杂质。它没有前后直管段要求，可任意方向安装包括：水平，垂直，甚至从上到下流动。
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).
