FL-3539G_FL-3539ST_FL-3540G_FL-3540ST_FL-3540C转子流量计OMEGA

±2%fs精度

非旋转密封主轴

易于阅读的比例尺设计

互换性的特殊尺寸

Omega?精密可变面积转子流量计可测量空气、水和气体流量，精确度高达±2%fs，重复性高达0.25%fs（以“07”或“45”结尾的模型精确度为±5%）。这些单位的特点是***个易于阅读毫米尺度，并与空气和水的相关图表。刻度盘在计量管上以1 mm（3/32”）的增量熔合，使用户能够以***高精度读取流量。

刻度设计，其中***条垂直线贯穿刻度的长度并与水平刻度划分相交，减少视差和眼睛疲劳，从而确保高精度读数（见下页插图）。前面的聚碳酸酯树脂屏蔽也是弯曲的，作为放大镜，这产生了优越的性能比其他转子流量计的标准设计。

FL-3539G_FL-3539ST_FL-3540G_FL-3540ST_FL-3540C转子流量计OMEGA

尺寸为150 mm的流量计也可配备用于特殊应用的非升杆式针阀。这种15圈的计量阀具有优越的流量控制，特别适用于色谱分析应用。滑动锥形针机构实际上消除了由于流体中的异物而引起的粘附或堆积，而不会改变或锯齿状的流速。

加压系统屏蔽

这些转子流量计，带有精密钻孔的硼硅酸盐玻璃计量管，完全可以防止破裂。白色不透明的后挡板提供了背景，以帮助识别浮动位置。

面板安装设计

这些转子流量计配有水平端口和NPT螺纹，便于面板安装。端口有外螺纹，并配有面板固定螺母。不需要额外的安装硬件。只需钻两个孔，间距为114 mm（4.500”）（中心到中心），用于65 mm装置，间距为224 mm（8.813”）（中心到中心），用于150 mm装置。每

FL-3539G_FL-3539ST_FL-3540G_FL-3540ST_FL-3540C转子流量计OMEGA

±2% FS Accuracy

Non-Rotating Seal Spindle

Easy-to-Read Scale Design

Special Dimensions for Interchangeability

The OMEGA? precision variablearea rotameters can measure flows of air, water, and gases, with up to ±2% FS accuracy and 0.25% FS repeatability (models ending in "07" or "45" have ±5% FS accuracy). These units feature an easy-to-read millimeter scale and come with correlation charts for air and water. The scale is fused on the metering tube in 1 mm (3/32") increments, which enables a user to read the flow rate with the highest accuracy.

The scale design, in which a vertical line runs through the length of the scale and intersects the horizontal scale divisions, reduces parallax and eye fatigue, thus ensuring highaccuracy readings (see inset, next page). The front polycarbonate resin shield is also curved to act as a magnifying glass, which yields superior performance over other rotameters with standard designs.

Non-Rising Stem Needle Valve

The 150 mm size flowmeters are also available with a non-rising stem type needle valve for special applications. This 15-turn metering valve has superior flow-rate control, and is particularly suited to use in chromatography applications. The sliding tapered-needle mechanism virtually eliminates sticking or buildup due to foreign matter in the fluid stream, without variations or saw-toothing of the flow rate.

Shielded for Pressurized Systems

These rotameters, with precisionbored borosilicate glass metering tubes, are fully shielded against breakage. A white opaque rear shield provides a background to aid in discerning the float position.

Panel Mounting Design

These rotameters are equipped with horizontal ports and NPT threads for easy panel mounting. The ports have external threads and are equipped with panel retaining nuts. No additional mounting hardware is required. Simply drill 2 holes 114 mm (4.500") apart (center to center) for 65 mm units, 224 mm (8.813") apart (center to center) for 150 mm units. Each hole should be 16 mm (5/8") in diameter.