Question

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Wells-Brookfield Cone/Plate
Rapid Determination Of Absolute Viscosity
Introduction
The Wells-Brookfield Cone/Plate Viscometer gives researchers a sophisticated instrument for routinely determining absolute viscosity of fluids in small sample volumes. Its cone and plate geometry provides the precision necessary for development of complete rheological data.
Principle of Operation
The Wells-Brookfield Cone/Plate Viscometer is a precise torque meter which is driven at discrete rotational speeds. The torque measuring system, which consists of a calibrated beryllium-copper spring connecting the drive mechanism to a rotating cone, senses the resistance to rotation caused by the presence of sample fluid between the cone and a stationary flat plate.
The resistance to the rotation of the cone produces a torque that is proportional to the shear stress in the fluid. The amount of torque is indicated either on a dial or digital display, depending on model. This reading is easily converted to absolute centipoise units (mPa.s) from pre-calculated range charts. Alternatively, viscosity can be calculated from the known geometric constants of the cone, the rate of rotation, and the stress related torque. See Range Tables
The correct relative position of cone and plate is obtained by following a simple mechanical procedure without the need for external gauges or supplementary instrumentation.
The stationary plate forms the bottom of a sample cup which can be removed, filled with .5 ml to 2.0 ml of sample fluid (depending on cone in use), and remounted without disturbing the calibration. The sample cup is jacketed and has tube fittings for connection to a constant temperature circulating bath.
The system is accurate to within ?.0% of the working range. Reproducibility is to within ?.2%. Working temperature range is from 0oC to 100oC.

Answer 1

水井-布氏锥/板粘度快速测定绝对言井-布氏锥/板粘度赋予科研尖端仪器测定绝对粘度流体照例小样本量.它提供了精确的几何板、锥必要开发完成数据流变..
运作原理水井-布氏锥/板粘度计即是精密驱动扭矩时转速离散.扭矩测量系统,它由一个校准铍铜弹簧连接驱动机制旋转锥、感官造成阻力旋转流体样品之间存在一个固定锥平板.
抗轮锥产生的扭矩是成正比的流体剪应力.金额扭矩表示要么是一个拨号或数字显示,取决于模型.这是读易绝对centipoise单位(mpa.s)前计算范围图表.
另一方面,可以计算粘度从已知的几何常数锥,自转速度,有关应力和扭矩.见程表的正确相对位置是相锥和板经过简单的机械程序而不需要外部仪器仪表、补充.板的形式固定样本杯底部可以拆掉,充满933.5毫升2.0毫升的样品液(视锥用),而排在干扰校正.样品杯并连管配件连接到恒温循环浴.该系统精确度在? 0.0%的工作范围.就是在重现? 0.2%.工作温度范围是从0oc至100oc.