Level Sensor

When choosing a level sensor for a specific application there are many factors that an operator will have to consider to ensure they select the best level sensor for the job. The level sensor must be compatible with the chemistry in the application, this is important even if they decide to install a non-contact level sensor. Next the operator will have to look at the different factors within the application for the level sensor, for example, they may have an open or closed top tank or sump and they must have a means to mount the level sensor. 

In a closed top tank, they can mount the level sensor in a bulkhead fitting or threaded flange. If they have an open top tank or a sump, then they may have to get creative. The level sensor in a open top tank or sump can be mounted in a side mount bracket the level sensor will have a threaded process connection. Once they have decided how they intend to mount the level sensor they now have to look at different factors that may influence the reading of the level sensor. These factors can include vapor, foam, turbulence, and condensation. All of which will impact the selection of the level sensor and it is very important that the operator has the ability to make an educated selection for the right level sensor. 

Now, I will break down each factor and advise you on how it will influence the level sensor selection process based on functionality. First we will discuss how vapor will influence your selection for the level sensor. Vapor will heavily effect the readings on ultrasonic level sensors, the ultrasonic level sensor emits a noise and waits for a return signal. The vapor has the ability to bounce the signal from the level sensor causing it to go lost or get deflected off of the tank walls or obstructions in the application. For applications that have vapor present you should select a submersible level sensor. Foam has a very similar impact on a non-contact level sensor, the level sensor will emit that sound signal and it will become absorbed into the foam and since the level sensor is not getting a return signal it will go lost. For applications with foam present it is in your best interest to select a submersible level sensor as well.

 Turbulence is also very difficult factor internal to your tank or pit making it a tough one for a level sensor. The turbulence will cause the level sensor to jump as the liquid level is constantly fluctuating. The level sensor should also not be a contact switch style, as you may have chatter occurring. The level sensor the operator should choose remains submersible for this application as well. Lastly we have arrived at condensation, the condensation builds up in a tank and hoovers around the top portion and causing ultrasonic level sensors to detect the level of the condensation. It is also possible that the level sensor will build up a lot of condensation on the transducer and then it will go lost. Again, the best level sensor for this application is submersible. 

Our more products:  Battery Operated Ultrasonic Level Sensor, Liquid Level Sensor