Ultrasonic switch

Ultrasonic Level Switch Operating Principle. ULS Series switches operate using ultrasonic sound wave propagation. Conversely, when liquid is present, transmission of the sound waves is greatly enhanced.

The electronic control unit generates . In this way the load connected via the relay can be switched.

Circuit diagram with Parts list.

Installation requires mounting the sensor.

There is no additional set-up or calibration required. Since it is an electronic instrument with no moving . Increasing demands for compliance with safety systems and overfill protection have mandated more reliable point level measurement. This technology features the ability to measure the level or volume of the fluid without making physical contact with the material. This is especially important in applications containing corrosive materials, . This circuit functions with inaudible (ultrasonic) sound.

Sound of frequency up to kHz is audible to human beings. The sound of frequency above kHz is called ultrasonic sound. The circuit described generates (transmits) ultrasonic . Ordering Example: (1) LVU30-MB Mounting bracket, $15. A technician with basic electrical skills (wiring) can service the instrument. Used in wide variety of applications to detect location of level in process or storage vessel.

The range can be configured by the keyboard and display. Model 9offers the ultimate solution to reliable single point liquid level measurement. Two piezoelectric crystals face each other across the cavity. The transmitter crystal sends an ultrasonic signal to the receiver crystal. When liquid fills the cavity, the receiver crystal detects a . As hand approaches sensor, yellow light turns on to indicate that switch is active.

When hand is close enough, green light turns on.