Abstract:
There is included a contamination degree acquiring section which acquires a degree of contamination of a liquid due to particles by correcting a sensor value from a measuring sensor, which measures particles in a liquid, based on at least one of a flow rate of the liquid, vibration applied to the measuring sensor, and ambient temperature of the measuring sensor. To provide a technique where it is possible to accurately measure an amount of particles included in a liquid used in a dynamic environment.
Abstract:
A measuring device can be used under high pressure and can measure impurity particles contained in a hydraulic oil with high accuracy. A flow path hole opening on two facing surfaces of a housing has flat side surfaces. A cavity opens on the side surface, and a cavity opens on the side surface. Light emitted from a light irradiating section irradiates a hydraulic oil flowing in the flow path hole, via a cell disposed in the cavity in a direction substantially orthogonal to a center axis. Light passing through the hydraulic oil is received by a light receiving section via a cell disposed in the cavity opening on the side surface.