FT-104B系列休止角測定儀
FT-104B Series angle of repose meter
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一.定義Definition：
休止角是指粉體堆積層的自由斜面在靜止的平衡狀態下，與水平面所形成的角
the angle of repose is the maximum angle formed between the free slope of the powder accumulation under static equilibrium state and horizontal plane.
二.工作原理principle：
休止角常用的方法是固定圓錐法（亦稱殘留圓錐法）。固定圓錐法將粉體注入到某一有限直徑的圓盤中心上，直到粉體堆積層斜邊的物料沿圓盤邊緣自動流出為止，停止注入，測定休止角。
the usual method of angle of repose is to fix the cone method (also called residual conic method).Fixed cone method : inject powder to the center of disc with limited diameter, until the hypotenuse powder accumulation of material automatically flow along the edge of disk, stop injection, measure angle of repose.
三.特點Characteristics：
測試粉末和顆粒通過漏斗的時間和形成的角度，測試前進行預堆積，從而已知樣品量，將已知質量粉末從漏斗流出而形成的堆積角，以及流出所需要的時間；可以獲得休止角和流速數據。
test time and angel of powder and particle pass through the funnel , preaccumulate before testing, so as to determine the sample weight, the known mass powder flowed from the funnel and form the accumulation of Angle, and the time it takes to outflow;You can obtain the angle of repose and the flow rate data.
| 粉體的休止角 angle of repose of powder | < 30o | 30o~45o | 45o~60o | 60o~90o |
| 流動性表示 Flow performance | 良好 better | 較好 good | 較差 worse | 差 poor |
用休止角評價粉體的流動性能，只能表示流動性的好壞，或者用于比較同種粉體因水分和粒度等引起的流動性差別。
With the Angle of repose evaluation flow properties of powders, can only say the stａnd or fall of liquidity, or used to compare the same powder liquidity difference caused by moisture and particle size, etc.
參照GB11986-89《表面活性劑 粉體和顆粒休止角的測定》
It was designed and manufacured According to GB11986-89 "determination of surfactant powder and particle angle of repose "
ISO4324-1977要求；粉體和顆粒休止角的測定，
ISO4324-1977 requirement; The determination of the Angle of repose t for powder and particle
參照USP（美國藥典）、BP （英國藥典）和EP（歐洲藥典）：DIN ISO 4324 - December 1983
It also Applies to USP (the United States pharmacopoeia), BP (British pharmacopoeia) and EP (European pharmacopoeia) specification requirements of the reference standard: DIN, ISO 4324 - December 1983.
四.適用范圍scope of application：
用于制藥、工業化學、洗滌、科研院校、質檢機構等等相關粉末粉體及顆粒材料之檢測；可以提供粉體儲藏性質的變化在料倉中儲存情況等。
They are widely used in pharmaceutical, chemical industry, washing, scientific research institutions, quality inspection institutions, and so on related detection of powder and granular materials;Changes in the properties of the powders can be provided, especially in the silo Storage conditions etc.
五.型號及技術參數Model and technical parameters：
| 功能項目 functional item | FT-104B | FT-104B2 |
| 1.透明 圓盤Transparent Disc: | 直徑diameter 100mm | |
| 2. 漏斗尺寸 ：Funnel Dimension : | 約外徑155mm內徑145mm outer diameter 155mm, inner diameter 145mm. | |
| 漏斗數量 funnel numbers | 1個測試漏斗 1pcs testing funnel | 2個（進料漏斗和測試漏斗各1個） 2pcs (each one feed funnel and test funnel) |
| 攪拌裝置 stirring apparatus | 有 include | 無 Not include |
| 高度刻度 height scale
| 基板起帶有0-100mm的刻度尺用于測量錐體高度the base plate is provided with a scale of 0-100mm to measure the height of the cone.
| |
| 6. 漏斗頸內徑funnel neck inner diameter | 10mm | |
| 漏斗總高度： Funnel height: | 141mm | |
| 出口閥門控制 Outlet valve control | 有 provided | |
| 流速功能 Flow velocity function | 能測試質量流速Mass flow rate0-999.9g/s ； 體積流速Volume flow rate：0-999.9g/ml
| |
| 配置 configuration | 鋼尺 、毛刷、秒表 Steel rule, brush, a stopwatch | |
