| 摘要 |
PURPOSE:To detect the contamination degree of liquid simply and quantitatively, by arranging a light emitting body and a light receiving body with an interval being provided between them, providing a control device, which detects the amount of received light when the liquid flows in said interval and detects the contamination of the liquid, and providing a display device, which displays the contamination based on the signal from the control device. CONSTITUTION:A detecting part B is immersed in a liquid to be inspected, e.g., engine oil in an oil pan. A space 12 is filled with the liquid to be inspected. At this time, air in the space 12 flows out through an air extracting hole 15. Therefore, the liquid readily enters the space 12. When a switch is turned ON, a current flows to a light emitting body 13 from a power source 15, and the light emitting body 13 emits light. The light is detected by a light receiving body 14. The transmitting state of the light through the liquid is converted into an electric signal and sent to an electronic circuit 4 for control. The relationship between the contamination degree and the transmittance of the liquid to be inspected is stored in the electronic circuit for control as data. The stored data and the signal from the light receiving body 14 are compared, and the contamination degree is displayed on a display device 3. |
