FL-3539ST_FL-3540G_FL-3540ST_FL-3540C轉(zhuǎn)子流量計(jì)OMEGA
Omega?精密可變面積轉(zhuǎn)子流量計(jì)可測(cè)量空氣、水和氣體流量，精確度高達(dá)±2%fs，重復(fù)性高達(dá)0.25%fs（以“07”或“45”結(jié)尾的模型精確度為±5%）。這些單位的特點(diǎn)是***個(gè)易于閱讀毫米尺度，并與空氣和水的相關(guān)圖表。刻度盤在計(jì)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(shè)計(jì)，其中***條垂直線貫穿刻度的長(zhǎng)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(shù)（見下頁(yè)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(chǎn)生了優(yōu)越的性能比其他轉(zhuǎn)子流量計(jì)的標(biāo)準(zhǔn)設(shè)計(jì)。
±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.
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