Keyence Corporation

Daiki Matsumoto

Choryon Oh

Daishiro Ishikawa

Hiroki Matsui

Ryuma Miyake

To enable accurate measurement of a flow rate of a gas flowing in a non-metallic tube. An ultrasonic flowmeter includes a first wedge member having a first angle, a second wedge member having a second angle, and a flow rate measurement unit that measures a flow rate of a gas based on a propagation time difference of a longitudinal wave excited by a tube. The first angle and the second angle are configured such that the tube excites both a longitudinal wave and a shear wave, and a mixing ratio of the shear wave to the longitudinal wave is 10% or less.

Ultrasonic flowmeter

Provided is an optical displacement sensor that allows a housing serving as a head to be downsized. A relay cable extending from the head is integrated with a body. The head is primarily responsible for projecting and receiving light to and from a to-be-detected object, while the body is made up of a power supply circuit, a display, and an operation part. The head includes a green laser light source and emits the green laser light to form a spot on a surface of the to-be-detected object.

Optical displacement sensor

To add a function of detecting a temperature to an ultrasonic flow sensor without making the structure of the ultrasonic flow sensor complicated. A sensor portion of the ultrasonic flow sensor includes an acoustic coupling member. The sensor portion includes a heat transfer member having a heat detecting surface for detecting heat of piping. The temperature of heat transferred in the heat transfer member via the heat detecting surface is detected by a temperature detecting device. The heat transfer member restricts an amount of collapse of the acoustic coupling member in a radial direction of the piping when the sensor portion is fixed to the piping.

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Osaka, Japan

Daiki Matsumoto