JPS60100616U - ultrasonic sensor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

Figure 1 is a schematic configuration diagram of a correlation flowmeter using a conventional ultrasonic sensor as a wave receiver, Figure 2 is a schematic vertical cross-sectional view of the wave receiver in Figure 1, and Figure 3 is a diagram of the wave receiver in Figure 2. An explanatory diagram of the deflection of the bottom plate, Fig. 4 is a schematic vertical cross-sectional view of an embodiment of the ultrasonic sensor according to the present invention, and Fig. 5 is a schematic configuration of a correlation type flowmeter using the ultrasonic sensor of Fig. 4 as a wave receiver. It is a diagram. 14... Ultrasonic sensor, 15...° Ultrasonic vibrator, 15a, 15b... Electrode, 18,
28...Storage container, 19,20...Conductor, 23...Vent hole, 29.30...
Moisture retardant.

Claims (1)

[Scope of utility model registration request] Ultrasonic vibration made of piezoelectric material with electrodes on each side
a storage container in which the ultrasonic transducer is fixed and in contact with the inner surface of the container wall via one of the electrodes; an ultrasonic sensor with at least one ventilation hole in the container wall;
An ultrasonic sensor characterized in that an electrically insulating moisture-proofing agent is adhered so as to continuously cover a portion near the outer edge of the other electrode of each of the other electrode and the ultrasonic vibrator.