What is ultrasonic level sensor?
As the name indicates, ultrasonic / level sensors measure distance by using ultrasonic waves. The sensor head emits an ultrasonic wave and receives the wave reflected back from the target. ultrasonic / level sensors measure the distance to the target by measuring the time between the emission and reception.
What is ultrasonic level transmitter?
Ultrasonic Level Transmitters are a non-contact level sensing technology that works similarly to radar or sonar. The sensor measures the time interval from pulse transmission to echo receipt and translates this time into distance or liquid level based on the speed of sound.
How does ultrasonic level work?
How Does It Work? Ultrasonic level sensors work by the “time of flight” principle using the speed of sound. The sensor emits a high-frequency pulse, generally in the 20 kHz to 200 kHz range, and then listens for the echo. The sensor sends pulses toward the surface and receives echoes pulses back.
How many types of level transmitters are there?
There are six main types of level transmitters. Each of these transmitters work in different ways, making them useful for a number of different types of processes. BM Engineering provide a range of different types of level transmitters from Bürkert including radar, ultrasonic and guided microwave.
How do I select a level transmitter?
It is important to choose a level sensor that is resistant to the pressure and temperature of the process conditions and has an output signal that is compatible with the measuring system: analog or digital output; with or without display; relay output; etc.
What is the range of ultrasonic sound?
Sounds with a frequency of 20 kHz and higher are referred to as ultrasound (or ultrasonic sound). High frequency sound is sound of which the frequency lies between 8 and 20 kHz.
What is DP type level transmitter?
Differential pressure transmitters are designed to measure pressure before and after the fluid encounters an interruption, such as a filter or pump. However, this pressure instrument can also be used to measure liquid levels. The market offers several methods for measuring and monitoring liquid levels.