Level Transmitter
The working principle of level transmitters mentioned above varies according to their underlying principle. For instance, capacitance level transmitters operate through a capacitor, hydrostatic level transmitters depend on the pressure of a fluid in a storage container for level measurement, while ultrasonic level transmitters convert the distance travelled by an ultrasonic wave to determine the level, and so on. Level measurement transmitters are used in a myriad of applications that require level measurement within containers or tanks. These transmitters often find their application in material handling, food and beverage, power, chemical, and water treatment industries.
Susan deals in all kinds of level transmitters with prime quality and at very economical prices.
Guided Microwave Level Transmitters
These transmitters work by sending a microwave pulse through a sensor cable or rod. The signal hits the surface of the liquid and travels back to the sensor, and then to the transmitter housing. The electronics integrated in the transmitter housing determine the filling level based on the time taken by the signal to travel down the sensor and back up again. These types of level transmitters are used in industrial applications in all areas of process technology
Ultrasonic Level Transmitter
In this type of transmitter, an ultrasonic transducer is mounted at, or near the top of a container containing liquid. The transducer sends out an ultrasonic pulse. The pulse hits the surface of the liquid and gets reflected. The sensor then calculates the fill level based on the time between the transmitted and received signal.
Radar type Level Transmitters
These transmitters work on the principle of radar by using radio wave emissions. These transmitters are normally mounted at the top of a tank filled with a liquid. The transmitter sends a radar signal into the liquid, and receives a reflection of the signal. The transmitters then analyse the current fill level of the tank based on the time taken by the transmitted signal to return.
Laser type Level Transmitters:
The least-common form of echo-based level measurement is a laser, which uses pulses of laser light reflected off the surface of a liquid to detect the liquid level. Perhaps the most limiting factor with laser measurement is the necessity of having a sufficiently reflective surface for the laser light to “echo” off of. Many liquids are not reflective enough for this to be a practical measurement technique, and the presence of dust or thick vapors in the space between the laser and the liquid will disperse the light, weakening the light signal and making the level more difficult to detect. However, lasers have been applied with great success in measuring distances between objects.
Applications:
- Chemical Industries
- Food and Beverages
- Water Treatment
- Material Handling
- Power Industries