自动粘度计测量时间原理-液体液面光电传感
Optoelectronic sensing of the liquid meniscus液体液面光电传感
The near-infrared
light which is generated in LEDs located
in the upper section of the measurement stand is conducted
through a glass-fibre light-conductor cable
onto the measurement planes. The
light shines through the
viscometer before it arrives at another light-
conductor cable located
on the opposite side; inside
this second cable,
the light is conducted
to a receiver in
the upper
section of the measurement stand.
While the liquid meniscus passes through the measurement planes, the lens -like
effect of the meniscus
causes a short-term darkening of the light beam, followed by a
magnification. This
process generates a measurement signal which can be evaluated
accurately.
自动粘度计测量时间原理-液体液面光电传感
测量位的上部的LED所产生的近红外光通过玻璃纤维光导电缆进行到测量平面。通过粘度计的光线照射之前它到达位于相反侧的另一轻型芯电缆;此**电缆内时，光被在测量台的上面部分传导到一个接收器。
而液体弯月面通过测量平面中，透镜式的弯月面的作用下会导致光束瞬时变暗，接着就变大。这个过程产生能够**地进行评估的测量信号。
