SKE Ultrasonic Level Switch Sensor for Vessels Ship

 SKE Ultrasonic Level Switch Sensor for Vessels Ship

Advantage:

No Moving Parts 

 Zero Maintenance 

Ignores Condensation on Sensor 

Will Not Sense Foam as Liquid 

Microcontroller-Based Electronics

ultrasonic level sensors are compatible with water-based and hydrocarbon-based liquids, the best solution for Vessels Ship Leakage measurement.

Power supply	24VDC
Standby current	4—5mA
Output current	16±1mA
Sensitivity	5mm
Delay	0.5 seconds
Mounting	3/4 NPT
Sensor material	Titanium Alloy
Temperature	-20℃ to 80℃
Protection grade	IP67
Weight	200g

Working principle

 

The ultrasonic switch is a device that uses an inaudible high-frequency acoustic wave (ultrasonic wave) to detect the presence of liquid at a specified point. The device is composed of electronic control unit and a sensor. The ultrasonic level switch uses the characteristics of sound wave transmission in steam and liquid to detect the liquid level. When sound waves travel through the air, they lose a lot of signal strength. When propagating in a liquid, sound waves retain almost all the signal strength.

 

 

To detect the level, we must determine whether there is liquid or gas (air) in the gap. Because liquids are denser than gases, it is easier to transmit sound waves through them. One side of the sensor gap transmits sound waves and the other side detects sound waves. When liquid is present, a large number of sound waves are received on the detection side. When gas (air) is present, a small amount of sound waves are received. The electronics detect this difference and switch the relay accordingly.

 The ultrasonic switch sensor consists of two piezoelectric crystals, one for transmitting sound waves and the other for receiving sound waves. Each crystal is mounted on one side of the metal sensor gap. The transmitting crystal generates high-frequency sound waves (1MHz to 3MHz) that travel through the gap to the receiver crystal. The receiver crystal converts the received sound energy into an electrical signal, which is processed by electronic equipment to determine whether there is liquid or air in the gap.

Shaanxi Shengke Electronic Technology Co.,Ltd
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