| 摘要 |
FIELD: physics. ^ SUBSTANCE: proposed system comprises vessel with fluid, photo receiver, LEDs arranged in symmetry about photo receiver optical axis at angle , collecting lenses aligned with photo receiver and LEDs, and mirror reflector. Note here that mirror reflector is arranged in fluid while angle is defined from new relation: , ^ where frs is focal distance of LED lens, mm; is radiation source aperture angle, degrees. Note also that number of LEDs makes at least four. ^ EFFECT: contactless measurement in inflammable liquids, simplified design and higher reliability. ^ 3 dwg |
