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FL-3539G_FL-3539ST_FL-3540G_FL-3540ST_FL-3540C轉子流量計OMEGA

±2%fs精度

非旋轉密封主軸

易于閱讀的比例尺設計

互換性的特殊尺寸

Omega?精密可變面積轉子流量計可測量空氣、水和氣體流量，精確度高達±2%fs，重復性高達0.25%fs（以“07”或“45”結尾的模型精確度為±5%）。這些單位的特點是***個易于閱讀毫米尺度，并與空氣和水的相關圖表。刻度盤在計量管上以1 mm（3/32”）的增量熔合，使用戶能夠以***高精度讀取流量。

刻度設計，其中***條垂直線貫穿刻度的長度并與水平刻度劃分相交，減少視差和眼睛疲勞，從而確保高精度讀數（見下頁插圖）。前面的聚碳酸酯樹脂屏蔽也是彎曲的，作為放大鏡，這產生了優越的性能比其他轉子流量計的標準設計。

FL-3539G_FL-3539ST_FL-3540G_FL-3540ST_FL-3540C轉子流量計OMEGA

尺寸為150 mm的流量計也可配備用于特殊應用的非升桿式針閥。這種15圈的計量閥具有優越的流量控制，特別適用于色譜分析應用。滑動錐形針機構實際上消除了由于流體中的異物而引起的粘附或堆積，而不會改變或鋸齒狀的流速。

加壓系統屏蔽

這些轉子流量計，帶有精密鉆孔的硼硅酸鹽玻璃計量管，完全可以防止破裂。白色不透明的后擋板提供了背景，以幫助識別浮動位置。

面板安裝設計

這些轉子流量計配有水平端口和NPT螺紋，便于面板安裝。端口有外螺紋，并配有面板固定螺母。不需要額外的安裝硬件。只需鉆兩個孔，間距為114 mm（4.500”）（中心到中心），用于65 mm裝置，間距為224 mm（8.813”）（中心到中心），用于150 mm裝置。每

FL-3539G_FL-3539ST_FL-3540G_FL-3540ST_FL-3540C轉子流量計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.